The Spitzer-HETDEX Exploratory Large-Area Survey. IV. Model-based Multiwavelength Photometric Catalog Academic Article uri icon

abstract

  • Abstract We present a 0.34.5 m 16-band photometric catalog for the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers an 27 deg2 field within the footprint of the HobbyEberly Telescope Dark Energy Experiment (HETDEX). Here we present new DECam imaging and an rizK s bandselected 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 depth of 25.5 AB mag. We measure photometric redshifts and achieve a 1 scatter of 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 proceedings

  • ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

author list (cited authors)

  • Leung, G., Finkelstein, S. L., Weaver, J. R., Papovich, C., Larson, R. L., Chworowsky, K., ... Yung, L.

complete list of authors

  • Leung, Gene CK||Finkelstein, Steven L||Weaver, John R||Papovich, Casey||Larson, Rebecca L||Chworowsky, Katherine||Ciardullo, Robin||Gawiser, Eric||Gronwall, Caryl||Jogee, Shardha||Kawinwanichakij, Lalitwadee||Somerville, Rachel S||Wold, Isak GB||Yung, LY Aaron

publication date

  • December 2023