We present a 0.3--4.5 μm 16-band photometric catalog for the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers a ∼27 deg2 field within the footprint of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). Here we present new DECam imaging and a rizKs-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 5σ depth of ∼25.5 AB mag. We measure photometric redshifts and achieve 1σ scatter of Δz/(1+z) of 0.04 with available spectroscopic redshifts at 0≤z≤1. This large area, multi-wavelength photometric catalog, combined with spectroscopic information from HETDEX, will enable a wide range of extragalactic science investigations.
@article{arxiv.2301.00908,
title = {The Spitzer-HETDEX Exploratory Large Area Survey. IV. Model-Based Multi-wavelength Photometric Catalog},
author = {Gene C. K. Leung and Steven Finkelstein and John Weaver and Casey Papovich and Rebecca Larson and Katherine Chworowsky and Robin Ciardullo and Eric Gawiser and Caryl Gronwall and Shardha Jogee and Lalitwadee Kawinwanichakij and Rachel Somerville and Isak Wold and L. Y. Aaron Yung},
journal= {arXiv preprint arXiv:2301.00908},
year = {2023}
}