OO
Oscar A. Chavez Ortiz
astro-ph.GAastro-ph.COastro-ph.IMEarly universeGalaxies and clusters
On Valency
published · living versionsW_kppczsme·v1 · currentpublished
HETDEX Public Source Catalog 1: 220K Sources Including Over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey
with Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis, Daniel J. Farrow +41
1 version
Preprints & journals
25 papers in the corpus · 2022–2026An Optical Illusion: High Electron Densities Create Extremely Metal-Poor Galaxy Impostors2608.20339v1 · Tiger Yu-Yang Hsiao, Danielle A. Berg, Steven L. Finkelstein et al.2026 · 0 citationsarXiv
Hunting Wandering 3<z<8 Black Holes: Spatial Offsets in Ionization Ratio and Continuum Emission2606.30715v2 · Urvi Thakurdesai, Anthony J. Taylor, Steven L. Finkelstein et al.2026 · 0 citationsarXiv
HETDEX Public Data Release 1: Source Catalog 2 and Data Cubes from ~90 sq deg of Integral-Field Optical Spectroscopy2606.04208v1 · Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis et al.2026 · 2 citationsApJS, 284, 67 (2026)
A Rapid Evolution in the Observed Mbh/M* Relation at z > 3 Revealed via Spectro-photometric SED-Modeling2605.30414v1 · Ansh R. Gupta, Anthony Taylor, Emma Curtis-Lake et al.2026 · 1 citationarXiv
Ly{\alpha} Nebulae in HETDEX: The Largest Statistical Census Bridging Ly{\alpha} Halos and Blobs across Cosmic Noon2603.06410v1 · Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis et al.2026 · 5 citationsApJ, 1000, 38 (2026)
The Prevalence of Bursty Star Formation in Low-Mass Galaxies at z=1-7 from H{\alpha}-to-UV Diagnostics2510.05388v1 · Marissa N. Perry, Anthony J. Taylor, Oscar A. Chavez Ortiz et al.2025 · 9 citationsarXiv
Testing Photometric Techniques for Measuring the Rest-Frame UV Spectral Slope Against JWST PRISM Spectroscopy2507.03118v3 · Alexa M. Morales, Steven L. Finkelstein, Pablo Arrabal Haro et al.2025 · 3 citationsApJ 994 212 (2025)
CAPERS Observations of Two UV-Bright Galaxies at z>10. More Evidence for Bursting Star Formation in the Early Universe2504.12504v1 · Vasily Kokorev, 'Oscar A. Ch'avez Ortiz, Anthony J. Taylor et al.2025 · 25 citationsarXiv
The Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: the Fourth Data Release2412.19414v1 · Chenxu Liu, Karl Gebhardt, Erin Mentuch Cooper et al.2024 · 5 citationsarXiv
Exploring the Nature of Little Red Dots: Constraints on AGN and Stellar Contributions from PRIMER MIRI Imaging2411.12005v2 · Gene C. K. Leung, Steven L. Finkelstein, Pablo G. P'erez-Gonz'alez et al.2024 · 3 citationsarXiv
A luminous and young galaxy at z = 12.33 revealed by a JWST/MIRI detection of Hα and [O iii].39866550 · Zavala, Jorge A, Castellano, Marco, Akins, Hollis B et al.2025 · 70 citationsNature astronomy. 2025;9(1):155-164
Broad-Line AGN at 3.5<z<6: The Black Hole Mass Function and a Connection with Little Red Dots2409.06772v2 · Anthony J. Taylor, Steven L. Finkelstein, Dale D. Kocevski et al.2024 · 10 citationsarXiv
The BoRG-JWST Survey: Program Overview and First Confirmations of Luminous Reionization-Era Galaxies from Pure-Parallel Observations2407.17551v1 · Guido Roberts-Borsani, Micaela Bagley, Sof'ia Rojas-Ruiz et al.2024 · 13 citationsarXiv
The Complete CEERS Early Universe Galaxy Sample: A Surprisingly Slow Evolution of the Space Density of Bright Galaxies at z ~ 8.5-14.52311.04279v1 · Steven L. Finkelstein, Gene C. K. Leung, Micaela B. Bagley et al.2023 · 212 citationsarXiv
The Web Epoch of Reionization Lyman- Survey (WERLS) I. MOSFIRE Spectroscopy of Lyman- Emitters2309.06656v1 · Olivia R. Cooper, Caitlin M. Casey, Hollis B. Akins et al.2023 · 2 citationsarXiv
NGDEEP Epoch 1: The Faint-End of the Luminosity Function at 9-12 from Ultra-Deep JWST Imaging2306.06244v1 · Gene C. K. Leung, Micaela B. Bagley, Steven L. Finkelstein et al.2023 · 2 citationsarXiv
Introducing the Texas Euclid Survey for Lyman Alpha (TESLA) Survey: Initial Study Correlating Galaxy Properties to Lyman-Alpha Emission2304.03258v1 · Oscar A. Chavez Ortiz, Steven L. Finkelstein, Dustin Davis et al.2023 · 11 citationsarXiv
A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars2303.08918v2 · Rebecca L. Larson, Steven L. Finkelstein, Dale D. Kocevski et al.2023 · 383 citationsThe Astrophysical Journal Letters, 2023, Volume 953, Issue 2, id.L29, 26 pp
The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey2302.05466v1 · Micaela B. Bagley, Nor Pirzkal, Steven L. Finkelstein et al.2023 · 78 citationsarXiv
HETDEX Public Source Catalog 1: 220K Sources Including Over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey2301.01826v1 · Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis et al.2023 · 50 citationsarXivon Valency
COSMOS-Web: An Overview of the JWST Cosmic Origins Survey2211.07865v2 · Caitlin M. Casey, Jeyhan S. Kartaltepe, Nicole E. Drakos et al.2022 · 304 citationsarXiv
Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations2208.01816v3 · Jorge A. Zavala, Veronique Buat, Caitlin M. Casey et al.2022 · 139 citationsApJL 943 L9 (2023)
Stellar Populations of Lyman-alpha Emitting Galaxies in the HETDEX Survey I: An Analysis of LAEs in the GOODS-N Field2208.01660v1 · Adam P. McCarron (UT Austin), Steven L. Finkelstein (UT Austin), Oscar A. Chavez Ortiz (UT Austin) et al.2022 · 13 citationsarXiv
A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ~ 12 Galaxy in Early JWST CEERS Imaging2207.12474v2 · Steven L. Finkelstein, Micaela B. Bagley, Pablo Arrabal Haro et al.2022 · 348 citationsarXiv
The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) I. Sample selection2204.13658v2 · Chenxu Liu, Karl Gebhardt, Erin Mentuch Cooper et al.2022 · 17 citationsarXiv
Career total: at least 52 works. 25 are in this corpus.
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