The Spitzer–HETDEX Exploratory Large-Area Survey. IV. Model-based Multiwavelength Photometric Catalog

Gene C. K. Leung; Steven L. Finkelstein; John R. Weaver; Casey Papovich; Rebecca L. Larson; Katherine Chworowsky; Robin Ciardullo; Eric Gawiser; Caryl Gronwall; Shardha Jogee; Lalitwadee Kawinwanichakij; Rachel S. Somerville; Isak G. B. Wold; L. Y. Aaron Yung

doi:10.3847/1538-4365/acfe78

The Astrophysical Journal Supplement Series (Jan 2023)

The Spitzer–HETDEX Exploratory Large-Area Survey. IV. Model-based Multiwavelength Photometric Catalog

Gene C. K. Leung,
Steven L. Finkelstein,
John R. Weaver,
Casey Papovich,
Rebecca L. Larson,
Katherine Chworowsky,
Robin Ciardullo,
Eric Gawiser,
Caryl Gronwall,
Shardha Jogee,
Lalitwadee Kawinwanichakij,
Rachel S. Somerville,
Isak G. B. Wold,
L. Y. Aaron Yung

Affiliations

Gene C. K. Leung: ORCiD; Department of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USA
Steven L. Finkelstein: ORCiD; Department of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USA
John R. Weaver: ORCiD; Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
Casey Papovich: ORCiD; Department of Physics and Astronomy, Texas A&M University , College Station, TX, USA; George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy , Texas A&M University, College Station, TX, USA
Rebecca L. Larson: ORCiD; Department of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USA
Katherine Chworowsky: ORCiD; Department of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USA
Robin Ciardullo: ORCiD; Department of Astronomy and Astrophysics, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USA
Eric Gawiser: ORCiD; Department of Physics and Astronomy, Rutgers, The State University of New Jersey , 136 Frelinghuysen Road, Piscataway, NJ 08854, USA
Caryl Gronwall: ORCiD; Department of Astronomy and Astrophysics, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USA
Shardha Jogee: ORCiD; Department of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USA
Lalitwadee Kawinwanichakij: ORCiD; Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo , Kashiwa 277-8583, Japan
Rachel S. Somerville: ORCiD; Center for Computational Astrophysics , Flatiron Institute, 162 5th Avenue, New York, NY 10010, USA
Isak G. B. Wold: ORCiD; Astrophysics Science Division, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
L. Y. Aaron Yung: ORCiD; Astrophysics Science Division, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA

DOI: https://doi.org/10.3847/1538-4365/acfe78
Journal volume & issue: Vol. 269, no. 2
p. 46

Abstract

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We present a 0.3–4.5 μ m 16-band photometric catalog for the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers an ∼27 deg ^2 field within the footprint of the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX). Here we present new DECam imaging and an rizK _s band–selected catalog of four million sources extracted using a fully model-based approach. We validate our photometry by comparing with the model-based DECam Legacy Survey. We analyze the differences between model-based and aperture photometry by comparing with the previous SHELA catalog, finding that our model-based photometry can measure point sources to fainter fluxes and better capture the full emission of resolved sources. The catalog is 80% (50%) complete at riz ∼ 24.7 (25.1) AB mag, and the optical photometry reaches a 5 σ depth of ∼25.5 AB mag. We measure photometric redshifts and achieve a 1 σ scatter of Δ z /(1 + z ) of 0.04 with available spectroscopic redshifts at 0 ≤ z ≤ 1. This large-area, multiwavelength photometric catalog, combined with spectroscopic information from HETDEX, will enable a wide range of extragalactic science investigations.

Published in The Astrophysical Journal Supplement Series

ISSN: 0067-0049 (Print); 1538-4365 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0067-0049

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