JL
Joel Leja
astro-ph.GAastro-ph.COastro-ph.HEastro-ph.IMastro-ph.SRGalaxies and clustersastro-ph.EPcs.LGEarly universeHigh-energy astrophysics
On Valency
published · living versionsW_ag2qkf26·v1 · currentpublished
A New Census of the 0.2< z <3.0 Universe, Part II: The Star-Forming Sequence
with Joshua S. Speagle, Yuan-Sen Ting, Benjamin D. Johnson, Charlie Conroy +4
1 version
W_8v2wnrnw·v1published
W_fkyczag6·v1published
W_pkpw652j·v1published
W_9kpuu5ys·v1published
W_9zn9jwqn·v1published
Preprints & journals
196 papers in the corpus · 2012–2026The Role of Environment in Shaping the Assembly Timelines of Massive Quiescent Galaxies at Cosmic Noon2610.19937v1 · Tianmu Gao, J. Trevor Mendel, Letizia Bugiani et al.2026 · 0 citationsarXiv
Calcium Triplet Absorption is Common around Little Red Dots2609.25349v1 · Jenny E. Greene, Hanpu Liu, Raphael E. Hviding et al.2026 · 0 citationsarXiv
Balmer Absorption Series and Broad Metal Lines in Two Luminous Little Red Dots2609.22623v1 · Bingjie Wang, Jenny E. Greene, Hanpu Liu et al.2026 · 0 citationsarXiv
A Spectral Framework for Testing the Quasi-Star Hypothesis in Little Red Dots I: Weighing LRDs by Their Super-Eddington Luminosity Ratios---No Signs of Overmassive Black Holes2609.09265v2 · Olivia Curtis, Nikko J. Cleri, Jakob M. Helton et al.2026 · 0 citationsarXiv
Overmassive No More: The Case for Little Red Dots Hosting Black Hole Seeds as Massive as Single Supermassive Stars2609.09274v1 · Wendy Q. Sun, Rohan P. Naidu, Hanpu Liu et al.2026 · 0 citationsarXiv
Caught Napping by JWST UNCOVER+MegaScience: Constraining bursty star formation histories and number densities of mini-quenched galaxies at redshifts 4-72608.30011v1 · Gourav Khullar, Rachel Bezanson, Katherine A. Suess et al.2026 · 0 citationsarXiv
The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. V. When Galaxies Glow with Industry2608.12458v1 · Olivia Curtis, Aidan J. Rowland, Jason T. Wright et al.2026 · 0 citationsarXiv
A gas-enshrouded and gas-reddened black hole at cosmic dawn.42587117 · Naidu, Rohan P, Matthee, Jorryt, Katz, Harley et al.2026 · 26 citationsNature. 2026;656(8127):329-333
Outflows in the Early Universe: Neutral gas Absorption in Galaxies at z > 3 from low-resolution JWST Spectroscopy2607.20606v1 · Matteo Sapori, Sirio Belli, Letizia Bugiani et al.2026 · 0 citationsarXiv
Little Red Dots as Intermediate Mass, Super-Eddington Engines: Insights from Type IIn Supernovae and The 1837-1856 Great Eruption of Carinae2606.30711v1 · Rohan P. Naidu, Jorryt Matthee, Anna de Graaff et al.2026 · 0 citationsarXiv
Constraints on the Gas Geometry Surrounding Little Red Dots through Narrow-Line Diagnostics2606.23778v1 · Visal Sok, Erica J. Nelson, Mitchell C. Begelman et al.2026 · 0 citationsarXiv
Extended [CII] gas emission in and around a massive quiescent galaxy at z=7.32606.21361v1 · F. Valentino, A. Pensabene, A. Weibel et al.2026 · 1 citationarXiv
RUBIES: The Evolution of the Ionization Parameter from 0 < z < 92605.30410v3 · Nikko J. Cleri, Zach J. Lewis, Joel Leja et al.2026 · 0 citationsarXiv
Winding Back the Clock: Recent Star Formation Histories of Massive Quiescent Galaxies Are Consistent With Their Rapid Number Density Evolution Since 2604.05024v1 · Yunchong Zhang, Zhiyuan Ji, Rachel Bezanson et al.2026 · 0 citationsarXiv
Everything Every Band All at Once II: The Relationship Between Optical Size and Stellar Mass Over Eight Billion Years of Cosmic History2603.01370v1 · Tim B. Miller, Yunchong Zhang, Sedona H. Price et al.2026 · 1 citationarXiv
Everything Every Band All at Once I: A Global Morphology Catalog in Abell 2744 based on UNCOVER/MegaScience2603.00380v2 · Yunchong Zhang, Tim B. Miller, Sedona H. Price et al.2026 · 0 citationsApJS, 285, 62 (2026)
3D-Herschel: Constraining Dust Emission with Panchromatic Modeling of 3D-HST Galaxies2602.22384v2 · Seamus McNulty, Mimi Song, Katherine E. Whitaker et al.2026 · 0 citationsarXiv
Evidence for Shallow Nebular Attenuation Curves and Patchy Dust Geometry at z~2 with Pa-beta/H-alpha Measurements from JWST-MegaScience Medium Band Photometry2602.11418v1 · Brian Lorenz, Katherine A. Suess, Mariska Kriek et al.2026 · 0 citationsarXiv
Water absorption confirms cool atmospheres in two little red dots2602.06024v1 · Bingjie Wang, Joel Leja, Ivo Labbe et al.2026 · 0 citationsarXiv
pop-cosmos: Redshifts and physical properties of KiDS-1000 galaxies2602.03930v2 · Anik Halder, Hiranya V. Peiris, Stephen Thorp et al.2026 · 0 citationsMon Not R Astron Soc (2026)
pop-cosmos: Forward modeling KiDS-1000 redshift distributions using realistic galaxy populations2602.03935v1 · Boris Leistedt, Hiranya V. Peiris, Anik Halder et al.2026 · 0 citationsarXiv
Hidden mass in early galaxies revealed by bottom-heavy initial mass functions2601.20864v2 · Chloe M. Cheng, Martje Slob, Mariska Kriek et al.2026 · 0 citationsarXiv
Little Red Dot Host Galaxy Black Hole Star: A Gas-Enshrouded Heart at the Center of Every Little Red Dot2601.20929v2 · Wendy Q. Sun, Rohan P. Naidu, Jorryt Matthee et al.2026 · 8 citationsThe Open Journal of Astrophysics, Vol. 9 (2026)
It's More Complicated Than You Think: A Forward Model to Infer the Recent Star Formation History, Bursty or Not, of Galaxy Populations2601.20930v1 · Emilie Burnham, Bingjie Wang, Joel Leja et al.2026 · 1 citationarXiv
UNCOVER/MegaScience Finds Uniform and Highly Bursty Star Formation at 3 < z < 9, consistent with the High-Redshift UV Luminosity Function2601.16284v1 · Ikki Mitsuhashi, Katherine A. Suess, Joel Leja et al.2026 · 0 citationsarXiv
The X-Ray Dot: Exotic Dust or a Late-Stage Little Red Dot?2601.09778v1 · Raphael E. Hviding, Anna de Graaff, Hanpu Liu et al.2026 · 9 citationsarXiv
Ionizing Photon Production Efficiencies and Chemical Abundances at Cosmic Dawn Revealed by Ultra-Deep Rest-Frame Optical Spectroscopy of JADES-GS-z14-02512.19695v1 · Jakob M. Helton, Jane E. Morrison, Kevin N. Hainline et al.2025 · 0 citationsarXiv
The LEGA-C galaxy survey: multiple quenching channels for quiescent galaxies at 2512.10383v2 · Angelos Nersesian, Yasha Kaushal, Marco Martorano et al.2025 · 1 citationA&A 705, A153 (2026)
LEGA-C stellar populations scaling relations. I: Chemo-archaeological downsizing trends at z~0.72512.07952v1 · Anna R. Gallazzi, Stefano Zibetti, Arjen van der Wel et al.2025 · 3 citationsA&A 708, A289 (2026)
The Mass-Metallicity Relation and its Observational Effects at z~3-62512.03134v1 · Zach Lewis, Michael V. Maseda, Anna de Graaff et al.2025 · 0 citationsarXiv
LEGA-C stellar populations scaling relations. II: Dissecting mass-complete archaeological trends and their evolution since z~0.7 with LEGA-C and SDSS2511.11805v1 · Anna R. Gallazzi, Stefano Zibetti, Arjen van der Wel et al.2025 · 5 citationsA&A 708, A290 (2026)
JWST/NIRSpec Reveals a Small Population of Dominant Dust-Obscured Ionizing Sources in Galaxies at 1 < z < 32511.08671v1 · Si-Rui Ge, Nikko J. Cleri, Joel Leja et al.2025 · 0 citationsarXiv
Rapid, out of equilibrium metal enrichment indicated by a flat mass-metallicity relation at z~6 from NIRCam grism spectroscopy2510.19959v2 · Gauri Kotiwale, Jorryt Matthee, Daichi Kashino et al.2025 · 4 citationsarXiv
The slope and scatter of the star forming main sequence at z~5 : reconciling observations with simulations2510.19044v2 · Claudia Di Cesare, Jorryt Matthee, Rohan P. Naidu et al.2025 · 3 citationsarXiv
Discovery of red galaxy candidates at z ~ 12: Early dust growth or significant nebular emission with high-temperature stars?2510.13240v1 · Ikki Mitsuhashi, Katherine A. Suess, Joel Leja et al.2025 · 0 citationsarXiv
The Blue Jay Survey: Deep JWST Spectroscopy for a Representative Sample of Galaxies at Cosmic Noon2510.11775v2 · Sirio Belli, Letizia Bugiani, Minjung Park et al.2025 · 1 citationA&A, 713, A237 (2026)
pop-cosmos: Star formation over 12 Gyr from generative modelling of a deep infrared-selected galaxy catalogue2509.20430v2 · Sinan Deger, Hiranya V. Peiris, Stephen Thorp et al.2025 · 3 citationsMon Not R Astron Soc (2026)
What you see is what you get: empirically measured bolometric luminosities of Little Red Dots2509.05434v1 · Jenny E. Greene, David J. Setton, Lukas J. Furtak et al.2025 · 29 citationsarXiv
Diversity and Evolution of Dust Attenuation Curves from Redshift z ~ 1 to 92509.01795v3 · Irene Shivaei, Rohan P. Naidu, Francisco Rodriguez Montero et al.2025 · 9 citationsarXiv
The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars2508.18358v2 · Bingjie Wang, Joel Leja, Harley Katz et al.2025 · 3 citationsarXiv
RUBIES spectroscopically confirms the high number density of quiescent galaxies from 2508.08577v2 · Yunchong Zhang, Anna de Graaff, David J. Setton et al.2025 · 8 citationsApJ, 997, 252 (2026)
Breaking Through the Cosmic Fog: JWST/NIRSpec Constraints on Ionizing Photon Escape in Reionization-Era Galaxies2507.01096v1 · Emma Giovinazzo, Pascal A. Oesch, Andrea Weibel et al.2025 · 8 citationsarXiv
Even redder than we knew: color and evolution up to from JWST/NIRCam photometry2506.23669v2 · A. van der Wel, M. Martorano, D. Marchesini et al.2025 · 4 citationsA&A 701, A30 (2025)
Optical Strong Line Ratios Cannot Distinguish Between Stellar Populations and Accreting Black Holes at High Ionization Parameters and Low Metallicities2506.21660v1 · Nikko J. Cleri, Grace M. Olivier, Bren E. Backhaus et al.2025 · 8 citationsarXiv
pop-cosmos: Insights from generative modeling of a deep, infrared-selected galaxy population2506.12122v2 · Stephen Thorp, Hiranya V. Peiris, Gurjeet Jagwani et al.2025 · 6 citationsApJ 993, 240 (2025)
Impact of redshift distribution uncertainties on Lyman-break galaxy cosmological parameter inference2506.06475v1 · Francesco Petri, Boris Leistedt, Daniel J. Mortlock et al.2025 · 2 citationsMon Not R Astron Soc (2025)
RUBIES: A Spectroscopic Census of Little Red Dots; All V-Shaped Point Sources Have Broad Lines2506.05459v1 · Raphael E. Hviding, Anna de Graaff, Tim B. Miller et al.2025 · 51 citationsA&A 702, A57 (2025)
Probing neutral outflows in z ~ 2 galaxies using JWST observations of Ca II H and K absorption lines2506.05470v2 · Caterina Liboni, Sirio Belli, Letizia Bugiani et al.2025 · 5 citationsA&A 705, A125 (2026)
A Cosmic Miracle: A Remarkably Luminous Galaxy at Confirmed with JWST2505.11263v2 · Rohan P. Naidu, Pascal A. Oesch, Gabriel Brammer et al.2025 · 13 citationsarXiv
Measuring Emission Lines with JWST-MegaScience Medium-Bands: A New Window into Dust and Star Formation at Cosmic Noon2505.10632v1 · Brian Lorenz, Katherine A. Suess, Mariska Kriek et al.2025 · 2 citationsarXiv
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