REVIEW 1 major objections 6 minor 199 references
Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys
T0 review · 1 major / 6 minor · reviewed 2026-08-07 · deepseek-v4-flash
Pith's one-line read This paper reports the spectroscopic discovery of 25 new quasars at redshifts 4.6 to 6.9, six at $z\geq 6.5$, and characterizes their black hole masses, radio emission, and outflow properties.
desk verdict Solid new sample of 25 quasars; the dramatic CIV-MgII shift and 48,000 km/s outflow are honestly flagged as uncertain and should not block publication. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
The load-bearing machinery is a set of dropout color selections that separate high-redshift quasar candidates from the main contaminants (ultracool dwarfs and low-redshift galaxies), followed by optical and near-infrared spectroscopy and template fitting to assign redshifts. The central frame for the physical measurements is the MgII broad emission line, which anchors the systemic redshift; CIV is then compared with MgII to measure outflow shifts, and single-epoch virial scaling relations convert the line widths and continuum luminosities into black hole masses. The CIV full-width-at-half-maximum is blueshift-corrected before the mass estimate, and velocity shifts follow from $(z_{\rm CIV}-z_{\rm MgII})/(1+z_{\rm MgII})$ times $c$.
What would settle it
A high-signal-to-noise, high-resolution spectrum of PSO J041+06 that cleanly resolves both CIV and MgII, combined with a submillimeter detection of [CII] to pin the systemic velocity independently, would settle whether the roughly $9000$ km/s CIV-MgII shift is real or an artifact of the weak CIV line.
Extended reading notes
Core claim
The paper's central claim is that 25 objects previously listed only as candidate quasars are genuine quasars, established through optical and near-infrared spectroscopy that detects the Lyman-$\alpha$ break and broad emission lines. The newly confirmed sources span $M_{1450}$ from $-25.4$ to $-27.0$, with six at $z\geq 6.5$; three are strong radio emitters with 1.4 GHz luminosities of $0.09$--$1.0\times 10^{34}\,\mathrm{erg\,s^{-1}\,Hz^{-1}}$ and radio-loudness between roughly 30 and 850. For seven quasars at $6.3<z<6.9$, the paper presents near-infrared spectra of CIV and MgII, uses single-epoch virial scaling relations to estimate black hole masses of $\log(M_{\rm BH}/M_\odot)=8.58$--$9.14$ and Eddington ratios of 0.74--2.2, and identifies PSO J041+06 as a weak-line quasar with an extreme $\sim 9000\,\mathrm{km\,s^{-1}}$ CIV-MgII blueshift. It also classifies three sources as high-ionization broad absorption line quasars, one with a possible absorbing outflow reaching $48000\,\mathrm{km\,s^{-1}}$, and reports a blazar-like radio spectrum, variability, and X-ray detection for PSO J200-13.
Load-bearing premise
The analysis assumes that the gas producing the magnesium emission line, not the carbon line, sits at the quasar's true rest velocity; if that gas is itself streaming away, or if the faint carbon line in one quasar is measured incorrectly, the headline outflow speed and the black hole masses would change.
Editorial extensions
If this is right
- The six new $z\geq 6.5$ quasars enlarge the small set of luminous sources available for studying black hole accretion and reionization within the first billion years.
- PSO J200-13, if confirmed as a blazar at $z=4.71$, provides a rare Earth-aligned jet in the early Universe with an X-ray counterpart and multi-frequency radio variability.
- PSO J041+06 joins the rare class of weak-line quasars with a wind-dominated broad-line region at $z>6$, with the largest CIV-MgII shift currently known at those redshifts.
- The three new high-ionization BAL quasars, including a possible $48000\,\mathrm{km\,s^{-1}}$ outflow in PSO J067-14, add direct constraints on powerful quasar winds and feedback in the early Universe.
Reading between the lines
- If the color selections presented here prove as efficient as they appear, combining surveys with different filter responses could systematically recover quasars that sit just below the traditional Lyman-break color cuts.
- If the MgII-based Eddington ratios near or above unity hold for the whole sample, super-Eddington accretion may be common among the most luminous $z>6$ quasars, which would ease theoretical timelines for assembling billion-solar-mass black holes within 0.7 Gyr.
- A confirmed $48000\,\mathrm{km\,s^{-1}}$ absorbing outflow would be one of the fastest known and a strong test for radiation-driven wind models, which struggle to accelerate gas to such speeds.
- Because most of the new quasars lie in the southern sky, they are immediate targets for submillimeter and future radio facilities to measure host-galaxy properties and surrounding gas.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper reports the discovery and spectroscopic confirmation of 25 new quasars at 4.6<z<6.9, selected from multi-band optical, near-infrared, and radio surveys. It presents photometry and redshifts for all objects (Tables 2, A.1, A.2), including six quasars at z>=6.5, three radio-loud sources, and one candidate blazar (PSO J200-13). For a subsample of seven z>6.3 quasars it provides NIR spectroscopy, CIV and MgII line measurements, single-epoch black hole masses, and Eddington ratios. The paper also reports BAL features, a potential extreme CIV outflow in PSO J041+06, and a candidate 48000 km/s BAL in PSO J067-14.
Significance. The catalog itself is a valuable contribution to the high-redshift quasar sample: 25 new spectroscopically confirmed quasars with complete photometry, a documented list of 73 rejected contaminants, and a clear description of the selection methods. The MgII-based redshifts for two sources are checked against [CII] redshifts (PSO J037-08 and PSO J067-14), which lends credibility to the redshift scale. The radio-loud classification and blazar candidacy of PSO J200-13 are supported by multi-frequency radio data, variability, and an eROSITA detection. The paper's main intrinsic weakness is the emphasis on the ~9000 km/s CIV-MgII shift in PSO J041+06, which relies on a weak, low-S/N CIV line; this does not affect the discovery claim but does affect the physical interpretation presented as a headline result.
major comments (1)
- [Abstract; Sect. 5.1, Eq. (1)] The abstract states that PSO J041+06 shows a CIV-MgII velocity difference of approximately 9000 km/s and is 'one of the most extreme CIV outflows currently known,' yet the measurement rests on the peak redshift of a weak (REW about 6 A), low-S/N CIV line and on the assumption that MgII defines the systemic frame. The paper itself acknowledges in Sect. 5.1 that the CIV properties are uncertain and require higher S/N and resolution, but the abstract and Sect. 6 present the shift as an established result. This internal inconsistency should be fixed by qualifying the claim as tentative in the abstract and summary, and ideally by adding a brief statement of how the shift depends on continuum placement and possible MgII offsets.
minor comments (6)
- [Abstract] The abstract states 'Their masses (log[M_BH,MgII]=8.58-9.14) and Eddington ratios (lambda_Edd,MgII=0.74-2.2)', but Table 6 for the seven NIR-spectroscopy quasars gives log M_BH,MgII = 8.58-9.31 and lambda_Edd,MgII = 0.25-2.18. Please correct the ranges or specify the subset used.
- [Sect. 3.1] There is a typo 'ouwith' that should read 'with'.
- [Table C.3] The entry 'PSO254+25' is missing the 'J' and should be 'PSO J254+25' for consistency with the naming convention used throughout.
- [Sect. 2.4] The acronym appears as 'ALLWISE' here but as 'AllWISE' elsewhere in the paper; please standardize the spelling.
- [Sect. 2.5] The text cites 'Wolf J. et al. (2024)' while the reference list contains Wolf, J., Salvato, M., Belladitta, S., et al. 2024b; please disambiguate with the year-letter suffix.
- [Sect. 4.1.2] The subsection heading 'PSO J037-08, z = 6.725' omits the uncertainty that is given in Table 2 (6.725 +/- 0.002); adding it would improve consistency.
Circularity Check
No significant circularity: the 25-quasar catalog, redshifts, black-hole masses, and CIV-MgII shift rest on external templates, published scaling relations, and direct line measurements rather than on fitted inputs or self-citation chains.
full rationale
The paper's central claim is the spectroscopic discovery and characterization of 25 quasars, and this claim is self-contained observational work. Redshifts are obtained by chi-square template matching against four published composite quasar spectra (Bañados et al. 2016; D'Odorico et al. 2023; Onorato et al. 2025), and for seven sources from MgII line fits that are independently checked against [CII] redshifts for two objects (PSO J037−08: consistent to 4 ± 78 km/s; PSO J067−14: 359 ± 85 km/s), which is an external validation rather than a circular reference. The MgII black-hole masses use the Vestergaard & Osmer (2009) scaling relation and the CIV masses use Vestergaard & Peterson (2006) with the Coatman et al. (2017) blueshift correction; these are literature calibrations with external scatter estimates, not parameters fitted in this paper, so the masses are not predictions of fitted inputs. The ~9000 km/s CIV-MgII shift is the direct difference of two measured line redshifts computed with Eq. (1), and the paper explicitly labels the low-S/N CIV measurement as uncertain and requiring higher-quality data, which is a disclosed data-quality caveat rather than a circular step. The MgII-as-systemic assumption is a standard physical interpretation and a correctness risk, not a definitional equivalence. Selection procedures are cited from the authors' prior papers (Belladitta et al. 2023; Bañados et al. 2023; Wolf J. et al. 2024), but those are published, externally usable methods with stated photometric cuts, and no uniqueness theorem or unverified ansatz is imported to force the conclusions. No equation in the paper reduces to its own input, and no fitted parameter is renamed as a prediction.
Assumptions & free parameters
free parameters (1)
- Assumed radio spectral index for PSO J164+29 =
0.29 (assumed, not measured)
assumptions (6)
- domain assumption MgII single-epoch virial scaling relation (Vestergaard & Osmer 2009)
- domain assumption CIV scaling relation (Vestergaard & Peterson 2006) with Coatman et al. (2017) correction
- domain assumption Bolometric luminosity correction Lbol = 5.15 x lambda L_lambda(3000 A)
- domain assumption Rest-frame UV continuum slope alpha_nu = 0.44
- domain assumption MgII traces systemic redshift for the seven quasars with NIR spectra
- domain assumption Quasar composite templates used for Ly-alpha based redshifts are representative
Cite this review
Pith. "Pith review of Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys." pith.science (2026). https://pith.science/paper/IVPYDEEN
@misc{pith2026250515923,
author = {Pith},
title = {Pith review of: Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys},
year = {2026},
howpublished = {\url{https://pith.science/paper/IVPYDEEN}},
note = {Machine review of arXiv:2505.15923}
}
abstract
Luminous quasars at $z>4$ provide key insights into the early Universe. Their rarity necessitates wide-field multi-band surveys to efficiently separate them from the main astrophysical contaminants (i.e., ultracool dwarfs). To expand the sample of high-$z$ quasars, we conducted targeted selections using optical, infrared, and radio surveys, complemented by literature-based quasar candidate catalogs. In this paper, we report the discovery of \nqsos\ new quasars at $4.6<z<6.9$ (six at $z\geq6.5$), with $M_{1450}$ between $-$25.4 and $-$27.0. We also present new spectra of six $z>6.5$ quasars we selected, but whose independent discovery has already been published in the literature. Three of the newly discovered quasars are strong radio emitters (L$_{1.4~\rm GHz}$$=0.09-1.0\times$10$^{34}$erg s$^{-1}$ Hz$^{-1}$). Among them, one source at $z=4.71$ exhibits typical blazar-like properties, including a flat radio spectrum, radio-loudness $\sim$1000, and multi-frequency variability. It is also detected by SRG/eROSITA X-ray telescope (f$_{\rm 0.2-2.3keV} \sim 1.3\times10^{-13}$erg s$^{-1}$ cm$^{-2}$). In addition, for seven $6.3<z<6.9$ quasars we present near-infrared spectroscopy and estimate the central black hole mass from their C$\rm IV$ and Mg$\rm II$ broad emission lines.Their masses (log[M$_{\rm BH,MgII}$]$=8.58-9.14~\rm M_{\odot}$) and Eddington ratios ($\lambda_{\rm Edd,MgII}=0.74-2.2$) are consistent with other $z>6$ quasars reported in the literature. A $z = 6.3$ quasar exhibits a velocity difference of approximately $9000$ km s$^{-1}$ between the C$\rm IV$ and Mg$\rm II$ emission lines, making it one of the most extreme C$\rm IV$ outflows currently known. Additionally, the sample includes three high-ionization broad absorption line quasars. One of these quasars shows potential evidence of an extremely fast outflow feature, reaching $48000$ km s$^{-1}$.
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Works this paper leans on
-
[1]
Abbott , T. M. C., Abdalla , F. B., Allam , S., et al. 2018, , 239, 18
2018
-
[2]
2020, , 249, 3
Ahumada , R., Allende Prieto , C., Almeida , A., et al. 2020, , 249, 3
2020
-
[3]
2012, Philosophical Transactions of the Royal Society of London Series A, 370, 2765
Allard , F., Homeier , D., & Freytag , B. 2012, Philosophical Transactions of the Royal Society of London Series A, 370, 2765
2012
-
[4]
F., Argudo-Fern \'a ndez , M., et al
Almeida , A., Anderson , S. F., Argudo-Fern \'a ndez , M., et al. 2023, , 267, 44
2023
-
[5]
& Rupprecht , G
Appenzeller , I. & Rupprecht , G. 1992, The Messenger, 67, 18
1992
-
[6]
& Ilbert , O
Arnouts , S. & Ilbert , O. 2011, LePHARE: Photometric Analysis for Redshift Estimate , Astrophysics Source Code Library, record ascl:1108.009
2011
-
[7]
M., Sip o cz , B
Astropy Collaboration , Price-Whelan , A. M., Sip o cz , B. M., et al. 2018, , 156, 123
2018
-
[8]
2021, , 909, 80
Ba \ n ados , E., Mazzucchelli , C., Momjian , E., et al. 2021, , 909, 80
2021
Show all 199 references
-
[9]
2025, Nature Astronomy, 9, 293
Ba \ n ados , E., Momjian , E., Connor , T., et al. 2025, Nature Astronomy, 9, 293
2025
-
[10]
2019, , 885, 59
Ba \ n ados , E., Rauch , M., Decarli , R., et al. 2019, , 885, 59
2019
-
[11]
P., et al
Ba \ n ados , E., Schindler , J.-T., Venemans , B. P., et al. 2023, , 265, 29
2023
-
[12]
P., Decarli , R., et al
Ba \ n ados , E., Venemans , B. P., Decarli , R., et al. 2016, , 227, 11
2016
-
[13]
P., Mazzucchelli , C., et al
Ba \ n ados , E., Venemans , B. P., Mazzucchelli , C., et al. 2018, , 553, 473
2018
-
[14]
P., Morganson , E., et al
Ba \ n ados , E., Venemans , B. P., Morganson , E., et al. 2014, , 148, 14
2014
-
[15]
P., Morganson , E., et al
Ba \ n ados , E., Venemans , B. P., Morganson , E., et al. 2015, , 804, 118
2015
-
[16]
D., Bolton , J
Becker , G. D., Bolton , J. S., & Lidz , A. 2015, , 32, e045
2015
-
[17]
H., White , R
Becker , R. H., White , R. L., & Helfand , D. J. 1994, in Astronomical Society of the Pacific Conference Series, Vol. 61, Astronomical Data Analysis Software and Systems III, ed. D. R. Crabtree , R. J. Hanisch , & J. Barnes , 165
1994
-
[18]
2023, , 669, A134
Belladitta , S., Moretti , A., Caccianiga , A., et al. 2023, , 669, A134
2023
-
[19]
2019, , 629, A68
Belladitta , S., Moretti , A., Caccianiga , A., et al. 2019, , 629, A68
2019
-
[20]
2020, , 635, L7
Belladitta , S., Moretti , A., Caccianiga , A., et al. 2020, , 635, L7
2020
-
[21]
& Arnouts , S
Bertin , E. & Arnouts , S. 1996, , 117, 393
1996
-
[22]
2024, , 970, 9
Bischetti , M., Choi , H., Fiore , F., et al. 2024, , 970, 9
2024
-
[23]
2022, , 605, 244
Bischetti , M., Feruglio , C., D'Odorico , V., et al. 2022, , 605, 244
2022
-
[24]
2023, , 952, 44
Bischetti , M., Fiore , F., Feruglio , C., et al. 2023, , 952, 44
2023
-
[25]
2017, in ESO Calibration Workshop: The Second Generation VLT Instruments and Friends, 4
Boutsia , K., Osip , D., & Beletsky , Y. 2017, in ESO Calibration Workshop: The Second Generation VLT Instruments and Friends, 4
2017
-
[26]
Bridle , A. H. & Perley , R. A. 1984, , 22, 319
1984
-
[27]
2019, , 630, A111
Bruni , G., Piconcelli , E., Misawa , T., et al. 2019, , 630, A111
2019
-
[28]
1984, The Messenger, 38, 9
Buzzoni , B., Delabre , B., Dekker , H., et al. 1984, The Messenger, 38, 9
1984
-
[29]
A., Farina , E
Byrne , X., Meyer , R. A., Farina , E. P., et al. 2024, , 530, 870
2024
-
[30]
2019, , 484, 204
Caccianiga , A., Moretti , A., Belladitta , S., et al. 2019, , 484, 204
2019
-
[31]
2024, , 683, A34
Calderone , G., Guarneri , F., Porru , M., et al. 2024, , 683, A34
2024
-
[32]
C., Shanks , T., Chehade , B., et al
Carnall , A. C., Shanks , T., Chehade , B., et al. 2015, , 451, L16
2015
-
[33]
C., Magnier , E
Chambers , K. C., Magnier , E. A., Metcalfe , N., et al. 2016, arXiv e-prints, arXiv:1612.05560
2016 arXiv
-
[34]
C., Banerji , M., et al
Coatman , L., Hewett , P. C., Banerji , M., et al. 2017, , 465, 2120
2017
-
[35]
J., Cotton , W
Condon , J. J., Cotton , W. D., Greisen , E. W., et al. 1998, , 115, 1693
1998
-
[36]
2023, Nature Astronomy, 7, 622
Curtis-Lake , E., Carniani , S., Cameron , A., et al. 2023, Nature Astronomy, 7, 622
2023
-
[37]
2023, , 522, 1951
dal Ponte , M., Santiago , B., Carnero Rosell , A., et al. 2023, , 522, 1951
2023
-
[38]
L., Ryan-Weber , E., D'Odorico , V., et al
Davies , R. L., Ryan-Weber , E., D'Odorico , V., et al. 2023, , 521, 289
2023
-
[39]
G., R \"o ttgering , H., & van Breugel , W
De Breuck , C., Tang , Y., de Bruyn , A. G., R \"o ttgering , H., & van Breugel , W. 2002, , 394, 59
2002
-
[40]
P., Decarli , R., et al
De Rosa , G., Venemans , B. P., Decarli , R., et al. 2014, , 790, 145
2014
-
[41]
P., et al
Decarli , R., Walter , F., Venemans , B. P., et al. 2018, , 854, 97
2018
-
[42]
P., Gupta , N., Jagannathan , P., et al
Deka , P. P., Gupta , N., Jagannathan , P., et al. 2024, , 270, 33
2024
-
[43]
J., Scholtz , J., et al
D'Eugenio , F., Cameron , A. J., Scholtz , J., et al. 2025, , 277, 4
2025
-
[44]
J., Lang , D., et al
Dey , A., Schlegel , D. J., Lang , D., et al. 2019, , 157, 168
2019
-
[45]
M., Fan , X., Brandt , W
Diamond-Stanic , A. M., Fan , X., Brandt , W. N., et al. 2009, , 699, 782
2009
-
[46]
2022, , 511, 5436
Diana , A., Caccianiga , A., Ighina , L., et al. 2022, , 511, 5436
2022
-
[47]
D., et al
D'Odorico , V., Ba \ n ados , E., Becker , G. D., et al. 2023, , 523, 1399
2023
-
[48]
P., Arav , N., Aoki , K., et al
Dunn , J. P., Arav , N., Aoki , K., et al. 2012, , 750, 143
2012
-
[49]
A., et al
Dye , S., Lawrence , A., Read , M. A., et al. 2018, , 473, 5113
2018
-
[50]
2013, The Messenger, 154, 32
Edge , A., Sutherland , W., Kuijken , K., et al. 2013, The Messenger, 154, 32
2013
-
[51]
F., Decarli , R., et al
Eilers , A.-C., Hennawi , J. F., Decarli , R., et al. 2020, , 900, 37
2020
-
[52]
A., Yue , M., et al
Eilers , A.-C., Simcoe , R. A., Yue , M., et al. 2023, , 950, 68
2023
-
[53]
Eisenhardt , P. R. M., Marocco , F., Fowler , J. W., et al. 2020, , 247, 69
2020
-
[54]
H., Joyce , R
Elias , J. H., Joyce , R. R., Liang , M., et al. 2006 a , in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 6269, Ground-based and Airborne Instrumentation for Astronomy, ed. I. S. McLean & M. Iye , 62694C
2006
-
[55]
H., Rodgers , B., Joyce , R
Elias , J. H., Rodgers , B., Joyce , R. R., et al. 2006 b , in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 6269, Ground-based and Airborne Instrumentation for Astronomy, ed. I. S. McLean & M. Iye , 626914
2006
-
[56]
J., et al
Euclid Collaboration , Barnett , R., Warren , S. J., et al. 2019, , 631, A85
2019
-
[57]
2024, arXiv e-prints, arXiv:2405.13491
Euclid Collaboration , Mellier , Y., Abdurro'uf , et al. 2024, arXiv e-prints, arXiv:2405.13491
2024
-
[58]
2022, , 662, A112
Euclid Collaboration , Scaramella , R., Amiaux , J., et al. 2022, , 662, A112
2022
-
[59]
Fan , X., Ba \ n ados , E., & Simcoe , R. A. 2023, , 61, 373
2023
-
[60]
A., Gunn , J
Fan , X., Strauss , M. A., Gunn , J. E., et al. 1999, , 526, L57
1999
-
[61]
P., Schindler , J.-T., Walter , F., et al
Farina , E. P., Schindler , J.-T., Walter , F., et al. 2022, , 941, 106
2022
-
[62]
Fitzpatrick , E. L. 1999, , 111, 63
1999
-
[63]
2005, International Journal of Modern Physics A, 20, 3121
Flaugher , B. 2005, International Journal of Modern Physics A, 20, 3121
2005
-
[64]
Flesch , E. W. 2023, arXiv e-prints, arXiv:2308.01505
2023 arXiv
-
[65]
2022, , 514, 2902
Gargiulo , A., Fumana , M., Bisogni , S., et al. 2022, , 514, 2902
2022
-
[66]
Gaskell , C. M. 1982, , 263, 79
1982
-
[67]
Ge , X., Zhao , B.-X., Bian , W.-H., & Frederick , G. R. 2019, , 157, 148
2019
-
[68]
R., Jiang , L., Brandt , W
Gibson , R. R., Jiang , L., Brandt , W. N., et al. 2009, , 692, 758
2009
-
[69]
J., Callingham , J
Gloudemans , A. J., Callingham , J. R., Duncan , K. J., et al. 2023, , 678, A161
2023
-
[70]
J., Duncan , K
Gloudemans , A. J., Duncan , K. J., R \"o ttgering , H. J. A., et al. 2021, , 656, A137
2021
-
[71]
J., Duncan , K
Gloudemans , A. J., Duncan , K. J., Saxena , A., et al. 2022, , 668, A27
2022
-
[72]
T., et al
Glowacki , M., Lee-Waddell , K., Deller , A. T., et al. 2023, , 949, 25
2023
-
[73]
E., Labbe , I., Goulding , A
Greene , J. E., Labbe , I., Goulding , A. D., et al. 2024, , 964, 39
2024
-
[74]
L., McConnell , D., Thomson , A
Hale , C. L., McConnell , D., Thomson , A. J. M., et al. 2021, , 38, e058
2021
-
[75]
C., Collins , R
Hambly , N. C., Collins , R. S., Cross , N. J. G., et al. 2008, , 384, 637
2008
-
[76]
Hardcastle , M. J. & Croston , J. H. 2020, , 88, 101539
2020
-
[77]
2023, , 959, 39
Harikane , Y., Zhang , Y., Nakajima , K., et al. 2023, , 959, 39
2023
-
[78]
E., Brammer , G
Heintz , K. E., Brammer , G. B., Watson , D., et al. 2025, , 693, A60
2025
-
[79]
Hewett , P. C. & Foltz , C. B. 2003, , 125, 1784
2003
-
[80]
R., Hancock , P
Hurley-Walker , N., Callingham , J. R., Hancock , P. J., et al. 2017, , 464, 1146
2017
-
[81]
2023, , 519, 2060
Ighina , L., Caccianiga , A., Moretti , A., et al. 2023, , 519, 2060
2023
-
[82]
2024, , 692, A241
Ighina , L., Caccianiga , A., Moretti , A., et al. 2024, , 692, A241
2024
-
[83]
2025, arXiv e-prints, arXiv:2504.10573
Ighina , L., Caccianiga , A., Moretti , A., et al. 2025, arXiv e-prints, arXiv:2504.10573
2025 arXiv
-
[84]
2020, , 58, 27
Inayoshi , K., Visbal , E., & Haiman , Z. 2020, , 58, 27
2020
-
[85]
T., Jagannathan , P., Mooley , K
Intema , H. T., Jagannathan , P., Mooley , K. P., & Frail , D. A. 2017, , 598, A78
2017
-
[86]
J., Lewis , J., Hodgkin , S., et al
Irwin , M. J., Lewis , J., Hodgkin , S., et al. 2004, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 5493, Optimizing Scientific Return for Astronomy through Information Technologies, ed. P. J. Quinn & A. Bridger , 411--422
2004
-
[87]
M., Tyson , J
Ivezi \'c , Z ., Kahn , S. M., Tyson , J. A., et al. 2019, , 873, 111
2019
-
[88]
2024, arXiv e-prints, arXiv:2409.06174
Jiang , D., Onoue , M., Jiang , L., et al. 2024, arXiv e-prints, arXiv:2409.06174
2024 arXiv
-
[89]
2007, , 656, 680
Jiang , L., Fan , X., Ivezi \'c , Z ., et al. 2007, , 656, 680
2007
-
[90]
D., Fan , X., et al
Jiang , L., McGreer , I. D., Fan , X., et al. 2016, , 833, 222
2016
-
[91]
M., Thyagarajan , N., Kumar , A., Kanekar , N., & Bernardi , G
Keller , P. M., Thyagarajan , N., Kumar , A., Kanekar , N., & Bernardi , G. 2024, , 528, 5692
2024
-
[92]
C., Schmidt , B
Keller , S. C., Schmidt , B. P., Bessell , M. S., et al. 2007, , 24, 1
2007
-
[93]
I., Sramek , R., Schmidt , M., Shaffer , D
Kellermann , K. I., Sramek , R., Schmidt , M., Shaffer , D. B., & Green , R. 1989, , 98, 1195
1989
-
[94]
2022, , 664, A39
Khusanova , Y., Ba \ n ados , E., Mazzucchelli , C., et al. 2022, , 664, A39
2022
-
[95]
S., Staveley-Smith , L., Westmeier , T., et al
Koribalski , B. S., Staveley-Smith , L., Westmeier , T., et al. 2020, , 365, 118
2020
-
[96]
A., Chandler , C
Lacy , M., Baum , S. A., Chandler , C. J., et al. 2020, , 132, 035001
2020
-
[97]
S., Assef , R
Lambert , T. S., Assef , R. J., Mazzucchelli , C., et al. 2024, , 689, A331
2024
-
[98]
J., Almaini , O., et al
Lawrence , A., Warren , S. J., Almaini , O., et al. 2007, , 379, 1599
2007
-
[99]
J., Leistedt , B., Barnett , R., & Hewett , P
Lenz , L., Mortlock , D. J., Leistedt , B., Barnett , R., & Hewett , P. C. 2024, arXiv e-prints, arXiv:2408.12770
2024 arXiv
-
[100]
2021, , 908, 124
Liu , Y., Wang , R., Momjian , E., et al. 2021, , 908, 124
2021
-
[101]
2024, , 685, A121
Loiacono , F., Decarli , R., Mignoli , M., et al. 2024, , 685, A121
2024
-
[102]
N., Hall , P
Luo , B., Brandt , W. N., Hall , P. B., et al. 2015, , 805, 122
2015
-
[103]
W., Higley , A
Lyke , B. W., Higley , A. N., McLane , J. N., et al. 2020, VizieR Online Data Catalog: SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020) , VizieR On-line Data Catalog: VII/289. Originally published in: 2020ApJS..250....8L
2020
-
[104]
1995, , 441, 18
Madau , P. 1995, , 441, 18
1995
-
[105]
2011, , 731, 53
Mainzer , A., Bauer , J., Grav , T., et al. 2011, , 731, 53
2011
-
[106]
2024 a , arXiv e-prints, arXiv:2405.00504
Maiolino , R., Risaliti , G., Signorini , M., et al. 2024 a , arXiv e-prints, arXiv:2405.00504
2024 arXiv
-
[107]
2024 b , , 691, A145
Maiolino , R., Scholtz , J., Curtis-Lake , E., et al. 2024 b , , 691, A145
2024
-
[108]
Marocco , F., Eisenhardt , P. R. M., Fowler , J. W., et al. 2021, , 253, 8
2021
-
[109]
2014, , 213, 3
Massaro , F., Giroletti , M., D'Abrusco , R., et al. 2014, , 213, 3
2014
-
[110]
2018, , 237, 5
Matsuoka , Y., Iwasawa , K., Onoue , M., et al. 2018, , 237, 5
2018
-
[111]
P., et al
Mazzucchelli , C., Ba \ n ados , E., Venemans , B. P., et al. 2017, , 849, 91
2017
-
[112]
2023, , 676, A71
Mazzucchelli , C., Bischetti , M., D'Odorico , V., et al. 2023, , 676, A71
2023
-
[113]
2025, , 694, A171
Mazzucchelli , C., Decarli , R., Belladitta , S., et al. 2025, , 694, A171
2025
-
[114]
L., Lenc , E., et al
McConnell , D., Hale , C. L., Lenc , E., et al. 2020, , 37, e048
2020
-
[115]
D., Jiang , L., Fan , X., et al
McGreer , I. D., Jiang , L., Fan , X., et al. 2013, , 768, 105
2013
-
[116]
G., Banerji , M., Gonzalez , E., et al
McMahon , R. G., Banerji , M., Gonzalez , E., et al. 2013, The Messenger, 154, 35
2013
-
[117]
P., Waters , B., Schiebel , D., Young , W., & Golap , K
McMullin , J. P., Waters , B., Schiebel , D., Young , W., & Golap , K. 2007, in Astronomical Society of the Pacific Conference Series, Vol. 376, Astronomical Data Analysis Software and Systems XVI, ed. R. A. Shaw , F. Hill , & D. J. Bell , 127
2007
-
[118]
L., Merloni , A., Georgakakis , A., et al
Menzel , M. L., Merloni , A., Georgakakis , A., et al. 2016, , 457, 110
2016
-
[119]
2024, , 682, A34
Merloni , A., Lamer , G., Liu , T., et al. 2024, , 682, A34
2024
-
[120]
A., Bosman , S
Meyer , R. A., Bosman , S. E. I., & Ellis , R. S. 2019, , 487, 3305
2019
-
[121]
2020, , 642, L1
Mignoli , M., Gilli , R., Decarli , R., et al. 2020, , 642, L1
2020
-
[122]
L., Walter , F., & Mazzucchelli , C
Momjian , E., Ba \ n ados , E., Carilli , C. L., Walter , F., & Mazzucchelli , C. 2021, , 161, 207
2021
-
[123]
G., & Lidman , C
Moorwood , A., Cuby , J. G., & Lidman , C. 1998, The Messenger, 91, 9
1998
-
[124]
K., Matthews , J
Morabito , L. K., Matthews , J. H., Best , P. N., et al. 2019, , 622, A15
2019
-
[125]
J., Warren , S
Mortlock , D. J., Warren , S. J., Venemans , B. P., et al. 2011, , 474, 616
2011
-
[126]
F., Wang , F., et al
Nanni , R., Hennawi , J. F., Wang , F., et al. 2022, , 515, 3224
2022
-
[127]
P., et al
Neeleman , M., Novak , M., Venemans , B. P., et al. 2021, , 911, 141
2021
-
[128]
A., Wolf , C., Bian , F., et al
Onken , C. A., Wolf , C., Bian , F., et al. 2022, , 511, 572
2022
-
[129]
F., Schindler , J.-T., et al
Onorato , S., Hennawi , J. F., Schindler , J.-T., et al. 2025, [ [arXiv] 2406.07612 ]
2025 arXiv
-
[130]
2020, , 898, 105
Onoue , M., Ba \ n ados , E., Mazzucchelli , C., et al. 2020, , 898, 105
2020
-
[131]
2019, , 880, 77
Onoue , M., Kashikawa , N., Matsuoka , Y., et al. 2019, , 880, 77
2019
-
[132]
M., Shemmer , O., Trakhtenbrot , B., et al
Plotkin , R. M., Shemmer , O., Trakhtenbrot , B., et al. 2015, , 805, 123
2015
-
[133]
W., Atwood , B., Brewer , D
Pogge , R. W., Atwood , B., Brewer , D. F., et al. 2010, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 7735, Ground-based and Airborne Instrumentation for Astronomy III, ed. I. S. McLean , S. K. Ramsay , & H. Takami , 77350A
2010
-
[134]
G., Simcoe , R
Pons , E., McMahon , R. G., Simcoe , R. A., et al. 2019, , 484, 5142
2019
-
[135]
2020, The Journal of Open Source Software, 5, 2308
Prochaska , J., Hennawi , J., Westfall , K., et al. 2020, The Journal of Open Source Software, 5, 2308
2020
-
[136]
2024, arXiv e-prints, arXiv:2405.03781
Pudoka , M., Wang , F., Fan , X., et al. 2024, arXiv e-prints, arXiv:2405.03781
2024 arXiv
-
[137]
L., McMahon , R
Reed , S. L., McMahon , R. G., Banerji , M., et al. 2015, , 454, 3952
2015
-
[138]
L., McMahon , R
Reed , S. L., McMahon , R. G., Martini , P., et al. 2017, , 468, 4702
2017
-
[139]
T., Kruczek , N
Richards , G. T., Kruczek , N. E., Gallagher , S. C., et al. 2011, in American Astronomical Society Meeting Abstracts, Vol. 218, American Astronomical Society Meeting Abstracts \#218, 327.13
2011
-
[140]
2024, arXiv e-prints, arXiv:2407.17551
Roberts-Borsani , G., Bagley , M., Rojas-Ruiz , S., et al. 2024, arXiv e-prints, arXiv:2407.17551
2024 arXiv
-
[141]
M., Hall , P
Rodr \' guez Hidalgo , P., Khatri , A. M., Hall , P. B., et al. 2020, , 896, 151
2020
-
[142]
Ross , N. P. & Cross , N. J. G. 2020, , 494, 789
2020
-
[143]
2022, Sculptor: Interactive modeling of astronomical spectra , Astrophysics Source Code Library, record ascl:2202.018
Schindler , J.-T. 2022, Sculptor: Interactive modeling of astronomical spectra , Astrophysics Source Code Library, record ascl:2202.018
2022
-
[144]
2019, , 243, 5
Schindler , J.-T., Fan , X., Huang , Y.-H., et al. 2019, , 243, 5
2019
-
[145]
P., Ba \ n ados , E., et al
Schindler , J.-T., Farina , E. P., Ba \ n ados , E., et al. 2020, , 905, 51
2020
-
[146]
F., Meisner , A
Schlafly , E. F., Meisner , A. M., & Green , G. M. 2019, , 240, 30
2019
-
[147]
2003, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol
Seifert , W., Appenzeller , I., Baumeister , H., et al. 2003, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, ed. M. Iye & A. F. M. Moorwood , 962--973
2003
-
[148]
Selsing , J., Fynbo , J. P. U., Christensen , L., & Krogager , J. K. 2016, , 585, A87
2016
-
[149]
N., Richards , G
Shen , Y., Brandt , W. N., Richards , G. T., et al. 2016, , 831, 7
2016
-
[150]
E., Strauss , M
Shen , Y., Greene , J. E., Strauss , M. A., Richards , G. T., & Schneider , D. P. 2008, , 680, 169
2008
-
[151]
T., Strauss , M
Shen , Y., Richards , G. T., Strauss , M. A., et al. 2011, , 194, 45
2011
-
[152]
2019, , 873, 35
Shen , Y., Wu , J., Jiang , L., et al. 2019, , 873, 35
2019
-
[153]
W., Hardcastle , M
Shimwell , T. W., Hardcastle , M. J., Tasse , C., et al. 2022, , 659, A1
2022
-
[154]
A., Burgasser , A
Simcoe , R. A., Burgasser , A. J., Bernstein , R. A., et al. 2008, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 7014, Ground-based and Airborne Instrumentation for Astronomy II, ed. I. S. McLean & M. M. Casali , 70140U
2008
-
[155]
A., Burgasser , A
Simcoe , R. A., Burgasser , A. J., Schechter , P. L., et al. 2013, , 125, 270
2013
-
[156]
C., Giavalisco , M., Pettini , M., Dickinson , M., & Adelberger , K
Steidel , C. C., Giavalisco , M., Pettini , M., Dickinson , M., & Adelberger , K. L. 1996, , 462, L17
1996
-
[157]
C., et al
Stepney , M., Banerji , M., Hewett , P. C., et al. 2023, , 524, 5497
2023
-
[158]
J., Finkelstein , S
Taylor , A. J., Finkelstein , S. L., Kocevski , D. D., et al. 2024, arXiv e-prints, arXiv:2409.06772
2024 arXiv
-
[159]
L., Fan , X., Wang , F., et al
Tee , W. L., Fan , X., Wang , F., et al. 2023, , 956, 52
2023
-
[160]
1993, in Astronomical Society of the Pacific Conference Series, Vol
Tody , D. 1993, in Astronomical Society of the Pacific Conference Series, Vol. 52, Astronomical Data Analysis Software and Systems II, ed. R. J. Hanisch , R. J. V. Brissenden , & J. Barnes , 173
1993
-
[161]
2020, , 635, A57
Torres-Alb \`a , N., Bosch-Ramon , V., & Iwasawa , K. 2020, , 635, A57
2020
-
[162]
E., Richards , G
Vanden Berk , D. E., Richards , G. T., Bauer , A., et al. 2001, , 122, 549
2001
-
[163]
P., Ba \ n ados , E., Decarli , R., et al
Venemans , B. P., Ba \ n ados , E., Decarli , R., et al. 2015, , 801, L11
2015
-
[164]
P., Findlay , J
Venemans , B. P., Findlay , J. R., Sutherland , W. J., et al. 2013, , 779, 24
2013
-
[165]
& Osmer , P
Vestergaard , M. & Osmer , P. S. 2009, , 699, 800
2009
-
[166]
& Peterson , B
Vestergaard , M. & Peterson , B. M. 2006, , 641, 689
2006
-
[167]
& Wilkes , B
Vestergaard , M. & Wilkes , B. 2001, in Astronomical Society of the Pacific Conference Series, Vol. 247, Spectroscopic Challenges of Photoionized Plasmas, ed. G. Ferland & D. W. Savin , 359
2001
-
[168]
2022, , 663, A159
Vito , F., Mignoli , M., Gilli , R., et al. 2022, , 663, A159
2022
-
[169]
2021 a , A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A JWST Quasar Legacy Survey , JWST Proposal
Wang , F., Fan , X., Hennawi , J., et al. 2021 a , A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A JWST Quasar Legacy Survey , JWST Proposal. Cycle 1, ID. \#2078
2021
-
[170]
2017, , 839, 27
Wang , F., Fan , X., Yang , J., et al. 2017, , 839, 27
2017
-
[171]
2016, , 819, 24
Wang , F., Wu , X.-B., Fan , X., et al. 2016, , 819, 24
2016
-
[172]
2021 b , , 907, L1
Wang , F., Yang , J., Fan , X., et al. 2021 b , , 907, L1
2021
-
[173]
2024, arXiv e-prints, arXiv:2404.15413
Wang , F., Yang , J., Fan , X., et al. 2024, arXiv e-prints, arXiv:2404.15413
2024 arXiv
-
[174]
2019, , 884, 30
Wang , F., Yang , J., Fan , X., et al. 2019, , 884, 30
2019
-
[175]
2018, , 869, L9
Wang , F., Yang , J., Fan , X., et al. 2018, , 869, L9
2018
-
[176]
B., Lenc , E., Bell , M
Wayth , R. B., Lenc , E., Bell , M. E., et al. 2015, , 32, e025
2015
-
[177]
2021, , 162, 72
Wenzl , L., Schindler , J.-T., Fan , X., et al. 2021, , 162, 72
2021
-
[178]
J., Morris , S
Weymann , R. J., Morris , S. L., Foltz , C. B., & Hewett , P. C. 1991, , 373, 23
1991
-
[179]
C., Henderson , C
Wilson , J. C., Henderson , C. P., Herter , T. L., et al. 2004, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 5492, Ground-based Instrumentation for Astronomy, ed. A. F. M. Moorwood & M. Iye , 1295--1305
2004
-
[180]
A., et al
Wolf , C., Bian , F., Onken , C. A., et al. 2018, , 35, e024
2018
-
[181]
J., Bian , F., et al
Wolf , C., Hon , W. J., Bian , F., et al. 2020, , 491, 1970
2020
-
[182]
A., et al
Wolf , C., Lai , S., Onken , C. A., et al. 2024 a , Nature Astronomy, 8, 520
2024
-
[183]
2024 b , arXiv e-prints, arXiv:2406.05118
Wolf , J., Salvato , M., Belladitta , S., et al. 2024 b , arXiv e-prints, arXiv:2406.05118
2024 arXiv
-
[184]
E., Griffith , M
Wright , A. E., Griffith , M. R., Burke , B. F., & Ekers , R. D. 1994, , 91, 111
1994
-
[185]
L., Eisenhardt , P
Wright , E. L., Eisenhardt , P. R. M., Mainzer , A. K., et al. 2010, , 140, 1868
2010
-
[186]
N., Hall , P
Wu , J., Brandt , W. N., Hall , P. B., et al. 2011, , 736, 28
2011
-
[187]
& Shen , Y
Wu , Q. & Shen , Y. 2022, , 263, 42
2022
-
[188]
2015, , 518, 512
Wu , X.-B., Wang , F., Fan , X., et al. 2015, , 518, 512
2015
-
[189]
2024, , 528, 2679
Yang , D.-M., Schindler , J.-T., Nanni , R., et al. 2024, , 528, 2679
2024
-
[190]
2023, arXiv e-prints, arXiv:2302.01777
Yang , J., Fan , X., Gupta , A., et al. 2023, arXiv e-prints, arXiv:2302.01777
2023 arXiv
-
[191]
2021, , 923, 262
Yang , J., Wang , F., Fan , X., et al. 2021, , 923, 262
2021
-
[192]
2020 a , , 897, L14
Yang , J., Wang , F., Fan , X., et al. 2020 a , , 897, L14
2020
-
[193]
2020 b , , 904, 26
Yang , J., Wang , F., Fan , X., et al. 2020 b , , 904, 26
2020
-
[194]
2016, , 829, 33
Yang , J., Wang , F., Wu , X.-B., et al. 2016, , 829, 33
2016
-
[195]
& Shen , Y
Yang , Q. & Shen , Y. 2023, , 264, 9
2023
-
[196]
G., Adelman , J., Anderson , John E., J., et al
York , D. G., Adelman , J., Anderson , John E., J., et al. 2000, , 120, 1579
2000
-
[197]
Zensus , J. A. 1997, , 35, 607
1997
-
[198]
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-
[199]
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Reviewed August 7, 2026 · model on record in the stance chip above.
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