The DAWN JWST Archive: A spectroscopically-informed population study of the physical properties of galaxies at z>2

@misc{gottumukkala2026dawn,
  title = {{The DAWN JWST Archive: A spectroscopically-informed population study of the physical properties of galaxies at z>2}},
  author = {Rashmi Gottumukkala and Gabriel Brammer and Sune Toft and Mengyuan Xiao and Anna de Graaff and Pascal A. Oesch and Francesco Valentino and Katherine E. Whitaker and William M. Baker and Laia Barrufet and Rachel Bezanson and Leindert A. Boogaard and Alex J. Cameron and Olivia R. Cooper and Emma Giovinazzo and Kasper E. Heintz and Michaela Hirschmann and Kei Ito and Ivo Labbe and Minju M. Lee and Zach J. Lewis and Jorryt Matthee and Ian McConachie and Desika Narayanan and Clara L. Pollock and Sedona H. Price and David J. Setton and Marko Shuntov and Pieter van Dokkum and Bingjie Wang and Joris Witstok and Yunchong Zhang and Pengpei Zhu},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.15901},
  eprint = {2610.15901},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.15901},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - The DAWN JWST Archive: A spectroscopically-informed population study of the physical properties of galaxies at z>2
AU  - Rashmi Gottumukkala
AU  - Gabriel Brammer
AU  - Sune Toft
AU  - Mengyuan Xiao
AU  - Anna de Graaff
AU  - Pascal A. Oesch
AU  - Francesco Valentino
AU  - Katherine E. Whitaker
AU  - William M. Baker
AU  - Laia Barrufet
AU  - Rachel Bezanson
AU  - Leindert A. Boogaard
AU  - Alex J. Cameron
AU  - Olivia R. Cooper
AU  - Emma Giovinazzo
AU  - Kasper E. Heintz
AU  - Michaela Hirschmann
AU  - Kei Ito
AU  - Ivo Labbe
AU  - Minju M. Lee
AU  - Zach J. Lewis
AU  - Jorryt Matthee
AU  - Ian McConachie
AU  - Desika Narayanan
AU  - Clara L. Pollock
AU  - Sedona H. Price
AU  - David J. Setton
AU  - Marko Shuntov
AU  - Pieter van Dokkum
AU  - Bingjie Wang
AU  - Joris Witstok
AU  - Yunchong Zhang
AU  - Pengpei Zhu
PY  - 2026
DA  - 2026/10/11
PB  - arXiv
DO  - 10.48550/arxiv.2610.15901
UR  - https://arxiv.org/abs/2610.15901
AB  - Charting the evolution of star-formation, stellar mass and dust build-up over cosmic time relies on the accurate characterisation of the stellar population properties of high redshift galaxies. We present a catalogue of spectroscopically derived physical properties for ~12,000 galaxies at z>2, with archival JWST/NIRSpec PRISM spectroscopy and JWST/NIRCam imaging from the DAWN JWST Archive. We present a custom version of the SED fitting code BAGPIPES, used to perform joint spectrophotometric modelling of PRISM spectra and broadband NIRCam photometry. In doing so, we publicly release a science-ready catalogue of the physical properties of galaxies beyond cosmic noon. We report key physical properties, such as stellar masses, star-formation rates (SFR) and timescales, and V-band dust attenuation (Av). We further probe the recent star-formation histories (SFH) of galaxies via their SFRs on 3 Myr, 10 Myr, and 100 Myr timescales, capturing both rising and falling recent SFHs. Through dust-corrected ugi colour-colour diagrams of massive galaxies, we show how quiescent and dusty galaxies populate this colour space at z>2, with galaxies experiencing a recent downturn in star-formation occupying distinct parameter space. We also study the dustiest galaxies in our sample, showing that they are preferentially more massive and strongly star-forming relative to the parent sample, residing on the high-mass end of the star-forming main-sequence. The slope of the attenuation curve has a strong dependence on Av, varying from steep to shallow as the dust attenuation increases and the specific star-formation rate decreases. Our findings show that the unparalleled number statistics of this catalogue of spectroscopically derived stellar population properties uniquely enables the study star-formation, quenching and dust properties of galaxies from cosmic noon to cosmic dawn.
ER  -