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PypeIt: The Python Spectroscopic Data Reduction Pipeline

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arxiv 2005.06505 v2 pith:3HDKSWYY submitted 2020-05-13 astro-ph.IM

PypeIt: The Python Spectroscopic Data Reduction Pipeline

classification astro-ph.IM
keywords keckreductiondatageminipypeitmagellanpythonspectroscopic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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PypeIt is a Python package for semi-automated reduction of astronomical, spectroscopic data. Its algorithms build on decades-long development of previous data reduction pipelines by the developers (Bernstein, Burles, & Prochaska, 2015; Bochanski et al., 2009). The reduction procedure -- including a complete list of the input parameters and available functionality -- is provided as online documentation hosted by Read the Docs, which is regularly updated. (https://pypeit.readthedocs.io/en/latest/). Release v1.0.3 serves the following spectrographs: Gemini/GNIRS, Gemini/GMOS, Gemini/FLAMINGOS 2, Lick/Kast, Magellan/MagE, Magellan/Fire, MDM/OSMOS, Keck/DEIMOS (600ZD, 830G, 1200G), Keck/LRIS, Keck/MOSFIRE (J and Y gratings tested), Keck/NIRES, Keck/NIRSPEC (low-dispersion), LBT/Luci-I, Luci-II, LBT/MODS (beta), NOT/ALFOSC (grism4), VLT/X-Shooter (VIS, NIR), VLT/FORS2 (300I, 300V), WHT/ISIS.

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Forward citations

Cited by 13 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Two Peas in a Pod: The First Confirmed Dual Active Galactic Nucleus within a Green Pea Galaxy System

    astro-ph.GA 2026-07 conditional novelty 7.0

    A compact Green Pea galaxy system hosts two resolved, simultaneously accreting supermassive black holes — the first confirmed dual AGN in such a galaxy.

  2. Low-hard to high-soft spectral state transitions in the faintest early-X-ray-detected optical tidal disruption event TDE 2025aarm

    astro-ph.HE 2026-07 conditional novelty 7.0

    TDE 2025aarm is the faintest early-X-ray-detected optical TDE and the first thermal TDE reported to show a low-hard to high-soft X-ray state transition resembling black-hole X-ray binaries.

  3. A systematic survey for hypervelocity runaways from thermonuclear supernovae

    astro-ph.SR 2026-06 unverdicted novelty 7.0

    A systematic survey with complete spectroscopic classification finds 13 hypervelocity D6 and LP 40-365 stars and shows that intermediate-heating evolutionary models best reproduce the observed population at birth rate...

  4. Low-hard to high-soft spectral state transitions in the faintest early-X-ray-detected optical tidal disruption event TDE 2025aarm

    astro-ph.HE 2026-07 unverdicted novelty 6.0

    TDE 2025aarm exhibits the first reported low-hard to high-soft X-ray state transition in a thermal tidal disruption event, at the faintest early X-ray luminosity yet measured.

  5. The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654

    astro-ph.HE 2026-07 conditional novelty 6.0

    X-ray emission lines and a broad iron feature emerged in changing-look AGN 1ES 1927+654 concurrently with radio-jet formation and declining ionized outflows from 2022 to 2025.

  6. A systematic survey for hypervelocity runaways from thermonuclear supernovae

    astro-ph.SR 2026-06 conditional novelty 6.0

    A complete classification of Gaia-selected hypervelocity candidates yields 10 D6 and 3 LP 40-365 stars, with forward modeling favoring intermediate-heating evolutionary scenarios and low birth rates relative to the SN...

  7. TDE 2025abcr: A Tidal Disruption Event in the Outskirts of a Massive Galaxy

    astro-ph.HE 2026-02 conditional novelty 6.0

    TDE 2025abcr is the first optical tidal disruption event found more than 30,000 light-years from its host galaxy's center, implying a wandering black hole.

  8. EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction

    astro-ph.HE 2025-12 conditional novelty 6.0

    EP250827b/SN 2025wkm is a new X-ray flash–supernova whose long, soft X-ray burst and double-peaked, plateauing optical light curve are best explained by a magnetar central engine interacting with a low-mass circumstel...

  9. Bridging the gap between SLSNe and SE-SNe. Multi-wavelength analysis of the SLSN-Ib SN 2024jlc

    astro-ph.HE 2026-07 unverdicted novelty 4.0

    Multi-wavelength analysis of SN 2024jlc classifies it as an SLSN-Ib whose light curve fits circumstellar interaction or magnetar spin-down plus nickel decay, suggesting it bridges to SE-SNe via powering mechanism.

  10. NLTE Spectral Modelling of the Nearby Stripped-Envelope Supernova 2024ehs

    astro-ph.HE 2026-06 unverdicted novelty 4.0

    NLTE modeling of SN 2024ehs indicates low ejecta mass, ~20,000 km/s velocities, <0.1 solar masses of 56Ni, and a ~23 solar mass ZAMS progenitor with ~6 solar mass helium core.

  11. EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction

    astro-ph.HE 2025-12 conditional novelty 4.0

    EP250827b/SN 2025wkm is an X-ray flash supernova at z=0.1194 powered by a long-lived magnetar and disk winds interacting with extended circumstellar medium, without an on-axis relativistic jet.

  12. A redshift of z=3.20 for the bright arc in eMACSJ2229.9-0808: Comment on Wagner & Falco (2026) "Hamilton's Object revisited: A challenging source redshift of a strong lensing configuration"

    astro-ph.GA 2026-07 accept novelty 3.0

    Twenty-two spectral features from Subaru, Gemini and Keck uniquely fix the bright arc in eMACS J2229.9-0808 at z=3.20, not z=0.82.

  13. Hamilton's Object Revisited: A challenging source redshift of a strong lensing configuration

    astro-ph.GA 2026-04 unverdicted novelty 2.0

    Re-analysis of KCWI spectra with PypeIt confirms Hamilton's object redshift at z=0.820, showing the MOIRCS z=3.2 fit is worse and the earlier data inconclusive due to slit coverage and calibration issues.