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GNHeII J1236+6215: A He II $\lambda$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations

T0 review · 3 major / 4 minor · reviewed 2026-08-07 · deepseek-v4-flash

Pith's one-line read A z=3 galaxy's He II glow points to Population III stars. The discovery of narrow helium emission and an ISM built to leak ionizing photons adds a rare object to the small sample of high-redshift He II emitters.

desk verdict A careful, honest discovery paper for a new z≈3 He II emitter, but the key line rests on a private Keck spectrum that JWST does not independently confirm; worth a real referee who pushes for the data and a quantitative treatment of the prism non-detection. read the letter →

arxiv 2506.06831 v1 pith:4CNAA6XU submitted 2025-06-07 astro-ph.GA

classification astro-ph.GA
keywords HeIIemittersPopulationIIIstarsverymassiveLymancontinuumescapeGOODS-northJWSTNIRSpechigh-redshiftgalaxiesemission-linediagnostics
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper reports the discovery of a galaxy, GNHeII J1236+6215, seen when the universe was about 2.1 billion years old, that emits He II λ1640 radiation, a signature of photons energetic enough to doubly ionize helium. Using 17-band photometry plus Keck and JWST spectra, the authors identify 15 emission lines and argue that the extreme ionizing sources are most plausibly small pockets of Population III stars or very massive, low-metallicity stars, rather than an AGN or metal-rich Wolf-Rayet stars. They also find that the galaxy's interstellar medium—low dust, high ionization parameter, and a marked [S II] deficiency—is exactly the kind that allows Lyman continuum photons to escape, making this a candidate leaker of ionizing radiation at z≈3. If correct, the discovery provides a rare case of Pop III-like ionizing sources after the epoch of reionization and links such sources with the conditions that let ionizing photons escape galaxies.

What carries the argument

The central object is the He II λ1640 recombination line, which requires photons with E>54.4 eV (λ<228 Å), and the set of diagnostic line ratios (He II/Hβ, He II/Hα, O32, [S III]/[S II], [S II]/Hα, [O III]/Hβ) that separate candidate ionizing sources. The argument also leans on the [S II] deficiency parameter Δ[SII] as a tracer of density-bounded H II regions, and on SED fitting with CIGALE (BC03 stellar populations, Chabrier IMF) to derive stellar mass, SFR, and ionization parameter log U=−2.0.

What would settle it

A deep JWST NIRSpec grating observation of the He II λ1640 line and the rest-frame UV: if the line shows a broad component (FWHM≳1000 km/s) or a velocity offset from the Balmer lines, or if C IV λ1549 or N V λ1240 appear with P-Cygni profiles, the Pop III/VMS interpretation would be contradicted in favor of WR winds or an AGN. A 5σ detection of LyC flux in the F275W band would confirm escape, while a similarly deep non-detection would weaken the LyC-leaker claim.

Watch

Extended reading notes

Core claim

GNHeII J1236+6215 at z=2.9803 is a low-mass (M=7.8±3.1×$10^{8}$ M⊙), metal-poor (12+log(O/H)=7.85±0.22), low-dust (E(B−V)=0.04±0.12) star-forming galaxy with a narrow He II λ1640 line (observed FWHM=573±191 km/s, rest-frame EW=8.3 Å, L=9.55±1.95×$10^{41}$ erg/s) and three additional helium lines (He I λ5875, He I λ10830, He II λ8236). The absence of C IV λ1549, N V λ1240, and X-ray emission, together with narrow Balmer lines, rules out AGN and metal-rich Wolf-Rayet stars; the line ratios (He II/Hβ=1.96±0.30, He II/Hα=0.69±0.10, O32=7.28±0.11) place the galaxy in the Pop III/VMS region of diagnostic diagrams. The galaxy also shows [S II] deficiency ([SII]/Hα=0.08±0.02, Δ[SII]=−0.12) and an optically thin, density-bounded ISM that favors LyC escape, with a compact effective radius <0.31 kpc and SFR surface density ~41.5 M⊙ yr−1 kpc−2.

Load-bearing premise

The SED grid assumes the galaxy's light comes from standard BC03 stellar populations with a Chabrier IMF; it does not include Population III or very massive stars, so if those power the He II line the derived mass, SFR, and ionization parameter are biased.

Editorial extensions

If this is right

  • Adds a new object to the known sample of He II emitters at z≈2–5, one of the most UV-luminous (M_UV=−22.09) and among the strongest He II emitters at z≈3.
  • Shows that narrow He II profiles (FWHM<1000 km/s) can be produced by Pop III pockets or metal-poor very massive stars even in a galaxy whose bulk metallicity is ~15% solar.
  • Identifies the galaxy as a potential LyC leaker at z≈3, with multiple independent ISM indicators favoring escape: low dust, high O32, [S II] deficiency, compact morphology, and a near-symmetric Lyα profile.
  • If LyC escape is confirmed, this object supports the idea that He II emitters are relevant to reionization, connecting extreme ionizing sources with the conditions that let ionizing photons out.
  • Demonstrates JWST NIRCam's ability to deblend a foreground galaxy that contaminated earlier HST-based photometry and LyC measurements of this line of sight.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • The systematic flux offset between Keck and NIRSpec spectra (~2×) noted by the authors means the absolute He II luminosity and EW could change by a similar factor; a recalibrated spectrum would test whether the object remains among the strongest emitters.
  • The co-location of hard-ionizing He II production and LyC-favorable ISM conditions in one compact galaxy raises a testable hypothesis: that the same young massive stellar pockets provide both the hard ionizing spectrum and, through feedback, the density-bounded geometry that lets LyC photons escape; a NIRSpec IFU observation could spatially separate the Pop III-like region from the rest of the gal
  • Deeper F275W or AstroSat UVIT observations reaching a 5σ detection of LyC flux would yield a direct escape-fraction measurement; the paper's current upper limit is f_esc=0.19, so a robust detection would require a substantial exposure gain.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

3 major / 4 minor

Summary. The paper reports the discovery of GNHeII J1236+6215, a z=2.9803 star-forming galaxy in GOODS-North, using Keck LRIS, Keck MOSFIRE, JWST NIRSpec, and 17-band HST/JWST photometry. The central observational claim is a narrow He II λ1640 line (observed FWHM 573±191 km/s, rest-frame EW 8.3 Å, luminosity 9.55±1.95×10^41 erg/s) detected only in the LRIS spectrum. Combined with NIRSpec spectroscopy, the authors identify 15 emission lines and infer a low-mass, low-metallicity, highly ionized ISM (O32=7.28, [SIII]/[SII]=1.97, E(B-V)=0.04). They argue that He+ ionization is most plausibly powered by pockets of Population III stars or metal-poor very massive stars, rather than by AGN or metal-rich Wolf-Rayet stars, and that the ISM conditions ([SII]/Hα=0.08, symmetric Lyα, compact size, low dust) favor Lyman-continuum leakage. The paper includes a careful redshift/source-attribution exercise and a quantitative treatment of systematic flux offsets between instruments.

Significance. If the He II detection is secure, this is a valuable addition to the small sample of high-redshift He II λ1640 emitters and a rare case where extreme ionizing sources and LyC-leakage indicators are found in the same object, with implications for reionization studies. The paper is thorough in using all available data: 15 emission lines, 17-band SED fitting, a 2D NIRSpec spatial analysis, an explicit search for alternative redshift solutions, and a transparent Appendix D quantifying Keck/NIRSpec flux offsets. The authors also state clear caveats about the non-detection in the prism spectrum and the uncertain F275W photometry. However, the scientific impact is conditional on the robustness of the single He II line, which currently rests on a private LRIS spectrum and is not independently confirmed by JWST.

major comments (3)
  1. [§2, §6.1, Table 4] The central discovery—He II λ1640 emission—is detected only in the Keck LRIS spectrum, which was acquired through private communication and is not publicly available. The JWST NIRSpec prism covers the expected observed wavelength, but the authors report that they could not confirm a clean detection and derive a 1σ upper limit of ~1.6×10^-18 erg s^-1 cm^-2 (Section 6.1), about 5.5 times lower than the reported LRIS flux of 8.8±1.8×10^-18 erg s^-1 cm^-2. This is a load-bearing discrepancy: if the LRIS line is real, the prism data should show it at high significance unless the line is severely diluted by the prism's low spectral resolution near 0.65 μm. The paper asserts this dilution qualitatively but does not present the expected prism line profile or the resulting expected signal-to-noise ratio. I request (i) a quantitative consistency check that includes the line spread over the prism resolution element and the noise per resolution element at that wavelength, and (ii) that the LRIS 1D and 2D spectra, or at least a fully reduced version, be made public or available to the referee during the revision.
  2. [§6.2] The LRIS line fluxes have no associated error spectrum; the errors are estimated from the standard deviation of five adjacent flux values at each wavelength. This procedure can underestimate correlated noise, sky-subtraction residuals, and slit-loss variations, and it is the only uncertainty estimate for the He II λ1640 flux and FWHM that drive the entire analysis. Please provide a more robust error estimate, for example using the 2D spectrum with row-by-row variance or a bootstrap over independent spectral rows, and report how the significance of He II λ1640 changes with this error treatment.
  3. [§5, Table 3] The CIGALE SED grid uses only BC03 stellar population models with a Chabrier IMF and metallicities Z=0.004 and 0.008; it does not include Population III stars or very massive stars. The paper nevertheless uses the derived stellar mass (7.8×10^8 M⊙), SFR (12.2 M⊙/yr), burst age (5 Myr), and log U=-2.0 as quantitative inputs to the discussion of He+ ionization and LyC escape in Sections 7.3 and 7.4. As the authors themselves note when citing Schaerer et al. (2025), the inclusion of VMSs can change the inferred UV luminosity by factors of 5–6, which would bias the SED-derived SFR and mass if VMSs are present. A VMS- or Pop III-inclusive SED fit, or a quantitative estimate of the systematic error from excluding such populations, is needed before these values can be used to support the central interpretation.
minor comments (4)
  1. [§7.2, Table 4] Section 7.2 states that the detection of He II λ8236 'reinforces the presence of an extreme ionizing source', but Table 4 does not list a flux, FWHM, or equivalent width for this line. Please provide the measurement or explicitly state it as an upper limit.
  2. [§7.4, Table 2] The F275W magnitude of G1 is listed as 29.313±2.161, which is formally a marginal or non-detection; Section 7.4 nevertheless uses this flux to derive an fesc upper limit of 0.19. Please mark F275W as an upper limit in Table 2 and compute the fesc limit consistently with the photometric error.
  3. [Appendix C] Appendix C states that the contribution from the lower half of the MSA shutter cannot be entirely ruled out and that G2 could be at the same redshift as G1, which is confusing given the z=0.55 photometric redshift adopted for G2 in Section 4. Please clarify what constraints the 2D spectra actually place on G2's redshift and contribution.
  4. [§6.2, Table 4] The NIRSpec grating fluxes are systematically lower than the Keck MOSFIRE [OIII] fluxes by about a factor of two, and the paper uses different instruments for different line ratios. Please state explicitly in Table 4 or in the text which spectrum is used for each diagnostic ratio, so that the reader can assess the impact of the flux offset.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the He II measurement and the Pop III/VMS interpretation rest on direct spectra and external model grids, not on fitted inputs or load-bearing self-citations.

full rationale

The paper's central discovery is a spectroscopic line measurement: He II lambda1640 is detected in the Keck LRIS spectrum with a flux of 8.8±1.8e-18 erg s^-1 cm^-2, and all downstream inferences (line width, EW, luminosity, line ratios) are derived directly from that measurement and the JWST spectra. The Pop III / very massive star interpretation is tested against externally published diagnostic grids (Schaerer 2002; Katz et al. 2023; Wang et al. 2024), and the paper explicitly notes that the high [OIII]/Hbeta ratio and gas-phase metallicity disfavor pristine Pop III conditions, so the conclusion is an interpretation of measured ratios rather than a forced fit. The SED modeling does use emission-line-derived E(B-V) and metallicity as CIGALE priors, but this couples the priors to the SED fit without making the SED predict the He II line or the Pop III classification; the derived stellar mass, SFR, and log U are not circularly defined by the He II measurement. The self-citations (Saha et al. 2020 for the fesc relation; Mondal et al. 2023a,b for UVIT and GOODS-N context) are empirical external results or are explicitly described as unreliable for the present object's LyC measurement, and none of them is the load-bearing justification for the paper's central claim. The non-detection of He II in the JWST prism spectrum is a sensitivity and resolution limitation that the authors quantify with a 1-sigma upper limit; it is a robustness concern, not a circularity, because the detection is not defined in terms of the model conclusions. Overall, the derivation chain is self-contained against external benchmarks and no step reduces by construction to its own inputs.

Assumptions & free parameters 4 free parameters · 5 assumptions · 0 invented entities

The central claim rests on standard astrophysical models and calibrations rather than new physics. No invented entities. The free parameters are SED grid choices and input priors, none tuned to force the Pop III or LyC conclusion; the main load-bearing assumptions are the source attribution of the lines and the transferability of low-redshift diagnostics to z~3.

free parameters (4)
  • CIGALE burst age = 5 Myr (best-fit)
    Best-fit recent starburst age from the SED grid in Section 5; controls the inferred SFR and stellar mass.
  • CIGALE stellar population age and SFH timescales (age, tau_main, tau_burst, fburst) = not individually reported; grid values in Table 3
    Free parameters of the double-exponential star formation history fitted to 17-band photometry; they set the stellar mass and SFR.
  • Nebular ionization parameter log U = -2.0 (best-fit)
    Grid parameter in CIGALE; the best-fit model infers this value, used to argue for a highly ionized ISM.
  • E(B-V) line and ZGas priors = E(B-V)=0.04, Z~0.003
    Prior constraints derived from Balmer decrement and S23, then used to restrict the CIGALE grid; this couples the emission-line and SED analyses.
assumptions (5)
  • domain assumption The emission lines detected across Keck and JWST spectra originate from galaxy G1 at z=2.9803 and not from the foreground galaxy G2.
    Section 4 and Appendix C argue for this using redshift checks and 2D spectra, but Appendix C concedes that contribution from the lower half of the shutter cannot be entirely ruled out.
  • domain assumption Standard stellar population synthesis models (BC03 with Chabrier IMF) can represent the galaxy's continuum.
    Section 5 SED modeling; the grid excludes Pop III and VMS, so the derived mass, SFR, and ionization parameter assume normal stellar populations.
  • domain assumption The empirical line-ratio diagnostics (S23, R23, O32, [SII] deficiency, FWHM thresholds) calibrated on local and simulated galaxies apply at z~3.
    Sections 7.1-7.4 use relations from Perez-Montero and Diaz 2005, Nakajima 2022, Kewley 2001, Wang 2021, Schaerer 2002, and Katz 2023; systematic uncertainties in these calibrations are not fully quantified for this object.
  • domain assumption The He II 1640 line is nebular and its narrow FWHM excludes significant AGN or Wolf-Rayet contribution.
    Section 7.3; non-detection of C IV and X-rays support this, but the LRIS spectrum is private and the line has SNR~5.
  • domain assumption The F275W band probes rest-frame LyC with negligible red-leak, and the Saha et al. (2020) relation gives a valid fesc upper limit.
    Section 7.4; the F275W measurement is an upper limit with large error, so the fesc<0.19 bound is not secure.

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Cite this review

Pith. "Pith review of GNHeII J1236+6215: A He II $\lambda$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations." pith.science (2026). https://pith.science/paper/4CNAA6XU

@misc{pith2026250606831,
  author       = {Pith},
  title        = {Pith review of: GNHeII J1236+6215: A He II $\lambda$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/4CNAA6XU}},
  note         = {Machine review of arXiv:2506.06831}
}
abstract

He II $\lambda$1640 emission in galaxies indicates the presence of sources that produce extreme ionizing photons. Here, we report the discovery of a He II $\lambda$1640 emitting galaxy, GNHeII J1236+6215, at $z=$ 2.9803 in the GOODS-north field. We use photometry in 17 wavebands from near-UV to infrared to characterize the galaxy SED and combine Keck LRIS and JWST NIRSpec spectra to identify 15 emission lines including He II $\lambda$1640. We infer that the He$^+$ ionization in the galaxy could be driven by small pockets of young Population III stars or low-metallicity Very Massive Stars (VMSs) rather than AGN or metal-rich Wolf-Rayet stars. The galaxy has a highly ionized ISM ([OIII]5007/[OII]3727 = 7.28$\pm$0.11, [SIII]/[SII] = 1.97$\pm$0.48 and detected Ly$\alpha$, H$\alpha$, H$\beta$, H$\gamma$ lines), little reddening by dust (E(B$-$V) = 0.04$\pm$0.12), low metallicity (12 + log(O/H) = 7.85$\pm$0.22), and high star formation rate (SFR$_{\rm SED}$ = 12.2$\pm$2.0 M$_{\odot}$ yr$^{-1}$). In addition to these ISM conditions, we also notice a significant [SII] deficiency ([SII]6718,6732/H$\alpha$ = 0.08$\pm$0.02, $\Delta$[SII] = $-$0.12) which may indicate the presence of density-bounded optically thin H~II regions that combined with the low dust extinction favor leaking of ionizing Lyman continuum (LyC) photons. Our best-fit SED model also infers a high nebular ionization (log U = $-2.0$) and a low stellar mass M = 7.8$\pm3.1\times$10$^8$M$_{\odot}$. This discovery not only adds one important object to the known sample of high-redshift He~II emitters but also highlights a potential connection between He$^+$ ionization and favorable ISM conditions for the leakage of ionizing photons from galaxies.

Figures

Figures reproduced from arXiv: 2506.06831 by the authors.

Figure 1
Figure 1. Color composite RGB image of the galaxies GN￾HeII J1236+6215 (i.e., He II λ1640 emitter G1 at z = 2.9803) and G2 (i.e., foreground galaxy at z = 0.55). The emission in the HST F336W, HST F606W, and JWST F090W bands is displayed using the blue, green, and red colors, respectively. The red dashed lines show the orientation of the slit used in Keck MOSFIRE observa￾tions. Blue boxes show the alignment of the JWST NIRSpe… view at source ↗
Figure 2
Figure 2. (Top) 1. ′′15×1. ′′25 image cut-outs of the galaxies G1 and G2 in 6 HST (F275W, F336W, F435W, F606W, F775W, F850LP) and 11 JWST (F090W, F115W, F150W, F182M, F200W, F210M, F277W, F335M, F356W, F410M, F444W) bands. The z = 2.9803 He II λ1640 emitting galaxy GNHeII J1236+6215 (G1) is marked in red, whereas the foreground galaxy G2 at z = 0.55 is indicated by blue markers. A scale bar of 0. ′′5 (∼3.4 kpc at the redshift… view at source ↗
Figure 3
Figure 3. The derived SFR and stellar mass of G1 and G2 are shown by the red and blue markers, respectively. The main sequence (MS) SFR-stellar mass relations derived for galaxies at redshift 2< z <3 and 3< z <4 are shown by the cyan and orange dashed lines from Santini et al. (2017). The shaded region around each respective line marks the 1σ scatter in the SFR. The SFR and stellar mass of other known He II emitters are shown… view at source ↗
Figures from the paper (5 more)
Figure 4
Figure 4. Figure 4: The JWST and Keck spectra that contain all the identified emission lines. In all the panels, the observed spectral fluxes are shown in black, while the errors are displayed in orange. The rectangular patches shown on the top panel using blue (A), green (B), cyan (C), a…
Figure 5
Figure 5. Figure 5: [SII] BPT diagram that shows the location of galaxy GN￾HeII J1236+6215 (red point) with respect to other populations. The grey crosses represent MOSDEF galaxy populations within red￾shifts 2 and 4 (Kriek et al. 2015). The confirmed AGNs from the MOSDEF samples at z ∼ 2…
Figure 6
Figure 6. Figure 6: Properties of our identified He II λ1640 line is shown along with measurements of 33 He II emitters (hexagonal markers) reported by Saxena et al. (2020) between redshift ∼ 2.5 and 5. The galaxy GNHeII J1236+6215 is marked with a red circle on both panels. Top panel: Th…
Figure 7
Figure 7. Figure 7: [OIII] 5007/Hβ vs He II 1640/Hα line ratio of GNHeII J1236+6215 (red point). The black arrow indicates the uncertainty range in He II 1640/Hα arising from the systematic flux offset be￾tween the Keck and NIRSpec as discussed in Section 7.3 and Ap￾pendix D. The green pa…
Figure 8
Figure 8. Figure 8: Gas-phase oxygen abundance 12 + log(O/H) and O32 ratio of the galaxy GNHeII J1236+6215 (marked with red circle) along with a sample of green pea galaxies at 0.1 < z < 0.35 from Yang et al. (2017), He II λ4686 emitting ionized metal-poor galaxies at 0.01 < z < 0.09 from…

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Reference graph

Works this paper leans on

130 extracted references · 12 canonical work pages · cited by 1 Pith paper

  1. [1]

    , " * write output.state after.block = add.period write newline

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  2. [2]

    write newline

    " write newline "" before.all 'output.state := FUNCTION format.url url empty "" new.block "" url * "" * if FUNCTION format.eprint eprint empty "" archivePrefix empty "" archivePrefix "arXiv" = new.block " " eprint * " " * new.block " " eprint * " " * if if if FUNCTION format.doi doi empty "" " " doi * " " * if FUNCTION format.pid doi empty eprint empty ur...

  3. [3]

    `Y΀s9 ZGoFq V Xvlb 0BWv O- TTűf9O y䷢ 0 C<37 £D'G 4͠lv.'S ,]` m X u Fqi5 ,` r2 v!P X@ =A ґ[9s\'A J+'CB : .6 z ,` tNѾ 0 Z9 g;( ,]` m X C'0m T 2 &X@ ݵIA ,`8t 2 Հ 8' ^ Yy RqsA4

    thebibliography [1] 20pt to REFERENCES 6pt =0pt 10pt plus 3pt =0pt =0pt =1pt plus 1pt =0pt =0pt -12pt =13pt plus 1pt =20pt =13pt plus 1pt \@M =10000 =-1.0em =0pt =0pt 0pt =0pt =1.0em @enumiv\@empty 10000 10000 `\.\@m \@noitemerr \@latex@warning Empty `thebibliography' environment \@ifnextchar \@reference \@latexerr Missing key on reference command Each re...

  4. [4]

    M., Bauer , F

    Alexander , D. M., Bauer , F. E., Brandt , W. N., et al. 2003, , 126, 539, 10.1086/376473

  5. [5]

    G., Groves , B

    Allen , M. G., Groves , B. A., Dopita , M. A., Sutherland , R. S., & Kewley , L. J. 2008, , 178, 20, 10.1086/589652

  6. [6]

    Ashby , M. L. N., Willner , S. P., Fazio , G. G., et al. 2013, , 769, 80, 10.1088/0004-637X/769/1/80

  7. [7]

    P., Tollerud , E

    Astropy Collaboration , Robitaille , T. P., Tollerud , E. J., et al. 2013, , 558, A33, 10.1051/0004-6361/201322068

  8. [8]

    M., Sip o cz , B

    Astropy Collaboration , Price-Whelan , A. M., Sip o cz , B. M., et al. 2018, , 156, 123, 10.3847/1538-3881/aabc4f

Show all 130 references
  1. [9]

    A., & Skillman , E

    Aver , E., Olive , K. A., & Skillman , E. D. 2015, , 2015, 011, 10.1088/1475-7516/2015/07/011

  2. [10]

    Barrow , K. S. S., Robertson , B. E., Ellis , R. S., et al. 2020, , 902, L39, 10.3847/2041-8213/abbd8e

  3. [11]

    A., Chisholm , J., Erb , D

    Berg , D. A., Chisholm , J., Erb , D. K., et al. 2019, , 878, L3, 10.3847/2041-8213/ab21dc

  4. [12]

    A., Erb , D

    Berg , D. A., Erb , D. K., Auger , M. W., Pettini , M., & Brammer , G. B. 2018, , 859, 164, 10.3847/1538-4357/aab7fa

  5. [13]

    1996, , 117, 393, 10.1051/aas:1996164

    Bertin , E., & Arnouts , S. 1996, , 117, 393, 10.1051/aas:1996164

  6. [14]

    2019, , 622, A103, 10.1051/0004-6361/201834156

    Boquien , M., Burgarella , D., Roehlly , Y., et al. 2019, , 622, A103, 10.1051/0004-6361/201834156

  7. [15]

    B., van Dokkum , P

    Brammer , G. B., van Dokkum , P. G., & Coppi , P. 2008, , 686, 1503, 10.1086/591786

  8. [16]

    Bromm , V., & Larson , R. B. 2004, , 42, 79, 10.1146/annurev.astro.42.053102.134034

  9. [17]

    2011, , 49, 373, 10.1146/annurev-astro-081710-102608

    Bromm , V., & Yoshida , N. 2011, , 49, 373, 10.1146/annurev-astro-081710-102608

  10. [18]

    2003, , 344, 1000, 10.1046/j.1365-8711.2003.06897.x

    Bruzual , G., & Charlot , S. 2003, , 344, 1000, 10.1046/j.1365-8711.2003.06897.x

  11. [19]

    C., et al

    Calzetti , D., Armus , L., Bohlin , R. C., et al. 2000, , 533, 682, 10.1086/308692

  12. [20]

    L., Hu , E

    Capak , P., Cowie , L. L., Hu , E. M., et al. 2004, , 127, 180, 10.1086/380611

  13. [21]

    2013, , 556, A68, 10.1051/0004-6361/201220969

    Cassata , P., Le F \`e vre , O., Charlot , S., et al. 2013, , 556, A68, 10.1051/0004-6361/201220969

  14. [22]

    2003, , 115, 763, 10.1086/376392

    Chabrier , G. 2003, , 115, 763, 10.1086/376392

  15. [23]

    2015, , 219, 8, 10.1088/0067-0049/219/1/8

    Chang , Y.-Y., van der Wel , A., da Cunha , E., & Rix , H.-W. 2015, , 219, 8, 10.1088/0067-0049/219/1/8

  16. [24]

    L., Aird , J., Reddy , N., et al

    Coil , A. L., Aird , J., Reddy , N., et al. 2015, , 801, 35, 10.1088/0004-637X/801/1/35

  17. [25]

    Crowther , P. A. 2007, , 45, 177, 10.1146/annurev.astro.45.051806.110615

  18. [26]

    A., Schnurr , O., Hirschi , R., et al

    Crowther , P. A., Schnurr , O., Hirschi , R., et al. 2010, , 408, 731, 10.1111/j.1365-2966.2010.17167.x

  19. [27]

    2000, , 362, 519, 10.48550/arXiv.astro-ph/0008264

    De Breuck , C., R \"o ttgering , H., Miley , G., van Breugel , W., & Best , P. 2000, , 362, 519, 10.48550/arXiv.astro-ph/0008264

  20. [28]

    J., Scholtz , J., et al

    D'Eugenio , F., Cameron , A. J., Scholtz , J., et al. 2024, arXiv e-prints, arXiv:2404.06531, 10.48550/arXiv.2404.06531

  21. [29]

    2003, in The Mass of Galaxies at Low and High Redshift, ed

    Dickinson , M., Giavalisco , M., & GOODS Team . 2003, in The Mass of Galaxies at Low and High Redshift, ed. R. Bender & A. Renzini , 324, 10.1007/10899892\_78

  22. [30]

    J., Willott , C., Alberts , S., et al

    Eisenstein , D. J., Willott , C., Alberts , S., et al. 2023, arXiv e-prints, arXiv:2306.02465, 10.48550/arXiv.2306.02465

  23. [31]

    S., et al

    Elbaz , D., Dickinson , M., Hwang , H. S., et al. 2011, , 533, A119, 10.1051/0004-6361/201117239

  24. [32]

    J., Stanway , E

    Eldridge , J. J., Stanway , E. R., Xiao , L., et al. 2017, , 34, e058, 10.1017/pasa.2017.51

  25. [33]

    U., Bomans , D

    Enders , A. U., Bomans , D. J., & Wittje , A. 2023, , 672, A11, 10.1051/0004-6361/202245167

  26. [34]

    Fitzpatrick , E. L. 1999, , 111, 63, 10.1086/316293

  27. [35]

    R., Jaskot , A

    Flury , S. R., Jaskot , A. E., Ferguson , H. C., et al. 2022, , 930, 126, 10.3847/1538-4357/ac61e4

  28. [36]

    M., Kriek , M., Sanders , R

    Fornasini , F. M., Kriek , M., Sanders , R. L., et al. 2019, , 885, 65, 10.3847/1538-4357/ab4653

  29. [37]

    P., Chisholm , J., et al

    Fujimoto , S., Naidu , R. P., Chisholm , J., et al. 2025, arXiv e-prints, arXiv:2501.11678, 10.48550/arXiv.2501.11678

  30. [38]

    M., & Prochaska , J

    Fumagalli , M., O'Meara , J. M., & Prochaska , J. X. 2011, Science, 334, 1245, 10.1126/science.1213581

  31. [39]

    R., Kennicutt , Jr., R

    Garnett , D. R., Kennicutt , Jr., R. C., Chu , Y.-H., & Skillman , E. D. 1991, , 373, 458, 10.1086/170065

  32. [40]

    C., Koekemoer , A

    Giavalisco , M., Ferguson , H. C., Koekemoer , A. M., et al. 2004, , 600, L93, 10.1086/379232

  33. [41]

    Gr \"a fener , G., & Vink , J. S. 2015, , 578, L2, 10.1051/0004-6361/201425287

  34. [42]

    2017, Monthly Notices of the Royal Astronomical Society, 471, 210, 10.1093/mnras/stx1162

    Guidetti, D., Bondi, M., Prandoni, I., et al. 2017, Monthly Notices of the Royal Astronomical Society, 471, 210, 10.1093/mnras/stx1162

  35. [43]

    G., Izotov , Y

    Guseva , N. G., Izotov , Y. I., & Thuan , T. X. 2000, , 531, 776, 10.1086/308489

  36. [44]

    Hunter, J. D. 2007, Computing In Science & Engineering, 9, 90, 10.1109/MCSE.2007.55

  37. [45]

    K., Shimizu , I., Iwata , I., & Tanaka , M

    Inoue , A. K., Shimizu , I., Iwata , I., & Tanaka , M. 2014, , 442, 1805, 10.1093/mnras/stu936

  38. [46]

    I., Schaerer , D., Thuan , T

    Izotov , Y. I., Schaerer , D., Thuan , T. X., et al. 2016, , 461, 3683, 10.1093/mnras/stw1205

  39. [47]

    I., Schaerer , D., Worseck , G., et al

    Izotov , Y. I., Schaerer , D., Worseck , G., et al. 2018 a , , 474, 4514, 10.1093/mnras/stx3115

  40. [48]

    I., & Thuan , T

    Izotov , Y. I., & Thuan , T. X. 2004, , 602, 200, 10.1086/380830

  41. [49]

    I., Worseck , G., Schaerer , D., et al

    Izotov , Y. I., Worseck , G., Schaerer , D., et al. 2018 b , , 478, 4851, 10.1093/mnras/sty1378

  42. [50]

    A., & Mandel , E

    Joye , W. A., & Mandel , E. 2003, in Astronomical Society of the Pacific Conference Series, Vol. 295, Astronomical Data Analysis Software and Systems XII, ed. H. E. Payne , R. I. Jedrzejewski , & R. N. Hook , 489

  43. [51]

    2011, , 63, 379, 10.1093/pasj/63.sp2.S379

    Kajisawa , M., Ichikawa , T., Tanaka , I., et al. 2011, , 63, 379, 10.1093/pasj/63.sp2.S379

  44. [52]

    S., Devriendt , J., & Slyz , A

    Katz , H., Kimm , T., Ellis , R. S., Devriendt , J., & Slyz , A. 2023, , 524, 351, 10.1093/mnras/stad1903

  45. [53]

    M., Guerrero , M

    Kehrig , C., V \' lchez , J. M., Guerrero , M. A., et al. 2018, , 480, 1081, 10.1093/mnras/sty1920

  46. [54]

    S., Crowther , P

    Kehrig , C., Oey , M. S., Crowther , P. A., et al. 2011, , 526, A128, 10.1051/0004-6361/201015493

  47. [55]

    A., Wisotzki , L., et al

    Kerutt , J., Oesch , P. A., Wisotzki , L., et al. 2024, , 684, A42, 10.1051/0004-6361/202346656

  48. [56]

    J., Dopita , M

    Kewley , L. J., Dopita , M. A., Sutherland , R. S., Heisler , C. A., & Trevena , J. 2001, , 556, 121, 10.1086/321545

  49. [57]

    J., Nicholls , D

    Kewley , L. J., Nicholls , D. C., & Sutherland , R. S. 2019, , 57, 511, 10.1146/annurev-astro-081817-051832

  50. [58]

    E., Reddy , N

    Kriek , M., Shapley , A. E., Reddy , N. A., et al. 2015, , 218, 15, 10.1088/0067-0049/218/2/15

  51. [59]

    K., Hutchings , J., et al

    Kumar , A., Ghosh , S. K., Hutchings , J., et al. 2012, in , Vol. 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84431N, 10.1117/12.924507

  52. [60]

    2025, arXiv e-prints, arXiv:2502.14028, 10.48550/arXiv.2502.14028

    Lecroq , M., Charlot , S., Bressan , A., et al. 2025, arXiv e-prints, arXiv:2502.14028, 10.48550/arXiv.2502.14028

  53. [61]

    D., Conti , P

    Leitherer , C., Vacca , W. D., Conti , P. S., et al. 1996, , 465, 717, 10.1086/177456

  54. [62]

    D., et al

    Leitherer , C., Schaerer , D., Goldader , J. D., et al. 1999, , 123, 3, 10.1086/313233

  55. [63]

    2020, , 497, 2839, 10.1093/mnras/staa2143

    Liu , B., & Bromm , V. 2020, , 497, 2839, 10.1093/mnras/staa2143

  56. [64]

    2024, , 965, 152, 10.3847/1538-4357/ad2b63

    Liu , W., Veilleux , S., Canalizo , G., et al. 2024, , 965, 152, 10.3847/1538-4357/ad2b63

  57. [65]

    1995, , 441, 18, 10.1086/175332

    Madau , P. 1995, , 441, 18, 10.1086/175332

  58. [66]

    2013, , 553, A132, 10.1051/0004-6361/201321371

    Magnelli , B., Popesso , P., Berta , S., et al. 2013, , 553, A132, 10.1051/0004-6361/201321371

  59. [67]

    2024, , 687, A67, 10.1051/0004-6361/202347087

    Maiolino , R., \"U bler , H., Perna , M., et al. 2024, , 687, A67, 10.1051/0004-6361/202347087

  60. [68]

    D., Plat , A., G \'o mez-Gonz \'a lez , V

    Mayya , Y. D., Plat , A., G \'o mez-Gonz \'a lez , V. M. A., et al. 2023, , 519, 5492, 10.1093/mnras/stad017

  61. [69]

    S., Steidel , C

    McLean , I. S., Steidel , C. C., Epps , H. W., et al. 2012, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 8446, Ground-based and Airborne Instrumentation for Astronomy IV, ed. I. S. McLean , S. K. Ramsay , & H. Takami , 84460J, 10.1117/12.924794

  62. [70]

    C., et al

    Merlin , E., Fontana , A., Ferguson , H. C., et al. 2015, , 582, A15, 10.1051/0004-6361/201526471

  63. [71]

    2016, , 595, A97, 10.1051/0004-6361/201628751

    Merlin , E., Bourne , N., Castellano , M., et al. 2016, , 595, A97, 10.1051/0004-6361/201628751

  64. [72]

    2023, , 673, A50, 10.1051/0004-6361/202345895

    Me s tri \'c , U., Vanzella , E., Upadhyaya , A., et al. 2023, , 673, A50, 10.1051/0004-6361/202345895

  65. [73]

    A., & Jansen , R

    Mondal , C., Saha , K., Windhorst , R. A., & Jansen , R. A. 2023 a , , 946, 90, 10.3847/1538-4357/acc110

  66. [74]

    2023 b , , 264, 40, 10.3847/1538-4365/aca7c4

    Mondal , C., Saha , K., Bhattacharya , S., et al. 2023 b , , 264, 40, 10.3847/1538-4365/aca7c4

  67. [75]

    E., Owen , F

    Morrison , G. E., Owen , F. N., Dickinson , M., Ivison , R. J., & Ibar , E. 2010, , 188, 178, 10.1088/0067-0049/188/1/178

  68. [76]

    J., Condon , J

    Murphy , E. J., Condon , J. J., Schinnerer , E., et al. 2011, , 737, 67, 10.1088/0004-637X/737/2/67

  69. [77]

    2005, , 631, L5, 10.1086/497135

    Nagao , T., Motohara , K., Maiolino , R., et al. 2005, , 631, L5, 10.1086/497135

  70. [78]

    S., Maiolino , R., et al

    Nagao , T., Sasaki , S. S., Maiolino , R., et al. 2008, , 680, 100, 10.1086/587888

  71. [79]

    2022, , 262, 3, 10.3847/1538-4365/ac7710

    Nakajima , K., Ouchi , M., Xu , Y., et al. 2022, , 262, 3, 10.3847/1538-4365/ac7710

  72. [80]

    2019, , 624, A89, 10.1051/0004-6361/201834565

    Nanayakkara , T., Brinchmann , J., Boogaard , L., et al. 2019, , 624, A89, 10.1051/0004-6361/201834565

  73. [81]

    A., Montes , M., Reddy , N., et al

    Oesch , P. A., Montes , M., Reddy , N., et al. 2018, , 237, 12, 10.3847/1538-4365/aacb30

  74. [82]

    B., & Gunn , J

    Oke , J. B., & Gunn , J. E. 1983, , 266, 713, 10.1086/160817

  75. [83]

    B., Cohen , J

    Oke , J. B., Cohen , J. G., Carr , M., et al. 1995, , 107, 375, 10.1086/133562

  76. [84]

    2022, , 924, 47, 10.3847/1538-4357/ac33a5

    Paswan , A., Saha , K., Leitherer , C., & Schaerer , D. 2022, , 924, 47, 10.3847/1538-4357/ac33a5

  77. [85]

    2016, , 456, 4191, 10.1093/mnras/stv2859

    Patr \' cio , V., Richard , J., Verhamme , A., et al. 2016, , 456, 4191, 10.1093/mnras/stv2859

  78. [86]

    Y., Ho , L

    Peng , C. Y., Ho , L. C., Impey , C. D., & Rix , H.-W. 2002, , 124, 266, 10.1086/340952

  79. [87]

    G., Cava , A., Barro , G., et al

    P \'e rez-Gonz \'a lez , P. G., Cava , A., Barro , G., et al. 2013, , 762, 46, 10.1088/0004-637X/762/1/46

  80. [88]

    P \'e rez-Montero , E., & D \' az , A. I. 2005, , 361, 1063, 10.1111/j.1365-2966.2005.09263.x

  81. [89]

    2019, , 490, 978, 10.1093/mnras/stz2616

    Plat , A., Charlot , S., Bruzual , G., et al. 2019, , 490, 978, 10.1093/mnras/stz2616

  82. [90]

    2020, , 644, A21, 10.1051/0004-6361/202038634

    Ramambason , L., Schaerer , D., Stasi \'n ska , G., et al. 2020, , 644, A21, 10.1051/0004-6361/202038634

  83. [91]

    A., Steidel , C

    Reddy , N. A., Steidel , C. C., Erb , D. K., Shapley , A. E., & Pettini , M. 2006, , 653, 1004, 10.1086/508851

  84. [92]

    A., Topping , M

    Reddy , N. A., Topping , M. W., Sanders , R. L., Shapley , A. E., & Brammer , G. 2023, , 948, 83, 10.3847/1538-4357/acc869

  85. [93]

    J., Robertson , B., Tacchella , S., et al

    Rieke , M. J., Robertson , B., Tacchella , S., et al. 2023, , 269, 16, 10.3847/1538-4365/acf44d

  86. [94]

    N., Simmonds , C., et al

    Saha , K., Tandon , S. N., Simmonds , C., et al. 2020, Nature Astronomy, 4, 1185, 10.1038/s41550-020-1173-5

  87. [95]

    2017, , 847, 76, 10.3847/1538-4357/aa8874

    Santini , P., Fontana , A., Castellano , M., et al. 2017, , 847, 76, 10.3847/1538-4357/aa8874

  88. [96]

    2020, , 636, A47, 10.1051/0004-6361/201937170

    Saxena , A., Pentericci , L., Mirabelli , M., et al. 2020, , 636, A47, 10.1051/0004-6361/201937170

  89. [97]

    2002, , 382, 28, 10.1051/0004-6361:20011619

    Schaerer , D. 2002, , 382, 28, 10.1051/0004-6361:20011619

  90. [98]

    2003, , 397, 527, 10.1051/0004-6361:20021525

    ---. 2003, , 397, 527, 10.1051/0004-6361:20021525

  91. [99]

    Schaerer , D., Fragos , T., & Izotov , Y. I. 2019, , 622, L10, 10.1051/0004-6361/201935005

  92. [100]

    2025, , 693, A271, 10.1051/0004-6361/202451454

    Schaerer , D., Guibert , J., Marques-Chaves , R., & Martins , F. 2025, , 693, A271, 10.1051/0004-6361/202451454

  93. [101]

    J., Finkbeiner , D

    Schlegel , D. J., Finkbeiner , D. P., & Davis , M. 1998, , 500, 525, 10.1086/305772

  94. [102]

    Senchyna , P., & Stark , D. P. 2019, , 484, 1270, 10.1093/mnras/stz058

  95. [103]

    P., Vidal-Garc \' a , A., et al

    Senchyna , P., Stark , D. P., Vidal-Garc \' a , A., et al. 2017, , 472, 2608, 10.1093/mnras/stx2059

  96. [104]

    E., Steidel , C

    Shapley , A. E., Steidel , C. C., Pettini , M., & Adelberger , K. L. 2003, , 588, 65, 10.1086/373922

  97. [105]

    2018, , 70, S15, 10.1093/pasj/psx107

    Shibuya , T., Ouchi , M., Harikane , Y., et al. 2018, , 70, S15, 10.1093/pasj/psx107

  98. [106]

    2012, , 421, 1043, 10.1111/j.1365-2966.2012.20439.x

    Shirazi , M., & Brinchmann , J. 2012, , 421, 1043, 10.1111/j.1365-2966.2012.20439.x

  99. [107]

    E., Whitaker , K

    Skelton , R. E., Whitaker , K. E., Momcheva , I. G., et al. 2014, , 214, 24, 10.1088/0067-0049/214/2/24

  100. [108]

    M., Windhorst , R

    Smith , B. M., Windhorst , R. A., Jansen , R. A., et al. 2018, , 853, 191, 10.3847/1538-4357/aaa3dc

  101. [109]

    J., Oey , M

    Smith , L. J., Oey , M. S., Hernandez , S., et al. 2023, , 958, 194, 10.3847/1538-4357/ad00b4

  102. [110]

    2015, , 808, 139, 10.1088/0004-637X/808/2/139

    Sobral , D., Matthee , J., Darvish , B., et al. 2015, , 808, 139, 10.1088/0004-637X/808/2/139

  103. [111]

    R., & Eldridge , J

    Stanway , E. R., & Eldridge , J. J. 2019, , 621, A105, 10.1051/0004-6361/201834359

  104. [112]

    C., Adelberger , K

    Steidel , C. C., Adelberger , K. L., Shapley , A. E., et al. 2003, , 592, 728, 10.1086/375772

  105. [113]

    C., Strom , A

    Steidel , C. C., Strom , A. L., Pettini , M., et al. 2016, , 826, 159, 10.3847/0004-637X/826/2/159

  106. [114]

    2007, , 382, 945, 10.1111/j.1365-2966.2007.12215.x

    Tornatore , L., Ferrara , A., & Schneider , R. 2007, , 382, 945, 10.1111/j.1365-2966.2007.12215.x

  107. [115]

    L., & Shull , J

    Tumlinson , J., Giroux , M. L., & Shull , J. M. 2001, , 550, L1, 10.1086/319477

  108. [116]

    Tumlinson , J., & Shull , J. M. 2000, , 528, L65, 10.1086/312432

  109. [117]

    2022, , 930, 37, 10.3847/1538-4357/ac602d

    Umeda , H., Ouchi , M., Nakajima , K., et al. 2022, , 930, 37, 10.3847/1538-4357/ac602d

  110. [118]

    2024, , 686, A185, 10.1051/0004-6361/202449184

    Upadhyaya , A., Marques-Chaves , R., Schaerer , D., et al. 2024, , 686, A185, 10.1051/0004-6361/202449184

  111. [119]

    L., et al

    Venditti , A., Bromm , V., Finkelstein , S. L., et al. 2024, , 973, L12, 10.3847/2041-8213/ad7387

  112. [120]

    2015, , 578, A7, 10.1051/0004-6361/201423978

    Verhamme , A., Orlitov \'a , I., Schaerer , D., & Hayes , M. 2015, , 578, A7, 10.1051/0004-6361/201423978

  113. [121]

    2017, , 597, A13, 10.1051/0004-6361/201629264

    Verhamme , A., Orlitov \'a , I., Schaerer , D., et al. 2017, , 597, A13, 10.1051/0004-6361/201629264

  114. [122]

    S., Heger , A., Krumholz , M

    Vink , J. S., Heger , A., Krumholz , M. R., et al. 2015, Highlights of Astronomy, 16, 51, 10.1017/S1743921314004657

  115. [123]

    M., Leitherer , C., et al

    Wang , B., Heckman , T. M., Leitherer , C., et al. 2019, , 885, 57, 10.3847/1538-4357/ab418f

  116. [124]

    M., Amor \' n , R., et al

    Wang , B., Heckman , T. M., Amor \' n , R., et al. 2021, , 916, 3, 10.3847/1538-4357/ac0434

  117. [125]

    2024, , 967, L42, 10.3847/2041-8213/ad4ced

    Wang , X., Cheng , C., Ge , J., et al. 2024, , 967, L42, 10.3847/2041-8213/ad4ced

  118. [126]

    H., Demchenko , V

    Wise , J. H., Demchenko , V. G., Halicek , M. T., et al. 2014, , 442, 2560, 10.1093/mnras/stu979

  119. [127]

    2017, , 844, 171, 10.3847/1538-4357/aa7d4d

    Yang , H., Malhotra , S., Gronke , M., et al. 2017, , 844, 171, 10.3847/1538-4357/aa7d4d

  120. [128]

    I., Dav \'e , R., et al

    Yang , Y., Zabludoff , A. I., Dav \'e , R., et al. 2006, , 640, 539, 10.1086/497898

  121. [129]

    K., & Jensen , H

    Zackrisson , E., Inoue , A. K., & Jensen , H. 2013, , 777, 39, 10.1088/0004-637X/777/1/39

  122. [130]

    R., Ciardullo , R., Gebhardt , H., et al

    Zeimann , G. R., Ciardullo , R., Gebhardt , H., et al. 2014, , 790, 113, 10.1088/0004-637X/790/2/113

Pith tools

Reviewed August 7, 2026 · model on record in the stance chip above.