Short GRB Host Galaxies I: Photometric and Spectroscopic Catalogs, Host Associations, and Galactocentric Offsets

Understand

We present a comprehensive optical and near-infrared census of the fields of 90 short gamma-ray bursts (GRBs) discovered in 2005-2021, constituting all short GRBs for which host galaxy associations are feasible ($\approx$ 60% of the total Swift short GRB population).

• We contribute 245 new multi-band imaging observations across 49 distinct GRBs and 25 spectra of their host galaxies.
• Supplemented by literature and archival survey data, the catalog contains 335 photometric and 40 spectroscopic data sets.
• The photometric catalog reaches $3\sigma$ depths of $\gtrsim 24-27$ mag and $\gtrsim 23-26$ mag for the optical and near-infrared bands, respectively.