TY - JOUR
T1 - Diagnosing DASH
T2 - A Catalog of Structural Properties for the COSMOS-DASH Survey
AU - Cutler, Sam E.
AU - Whitaker, Katherine E.
AU - Mowla, Lamiya A.
AU - Brammer, Gabriel B.
AU - Van Der Wel, Arjen
AU - Marchesini, Danilo
AU - Van Dokkum, Pieter G.
AU - Momcheva, Ivelina G.
AU - Song, Mimi
AU - Akhshik, Mohammad
AU - Nelson, Erica J.
AU - Bezanson, Rachel
AU - Franx, Marijn
AU - Kriek, Mariska
AU - Lange-Vagle, Daniel
AU - Leja, Joel
AU - Mackenty, John W.
AU - Muzzin, Adam
AU - Shipley, Heath
N1 - Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - We present the H 160 morphological catalogs for the COSMOS-DASH survey, the largest area near-IR survey using HST-WFC3 to date. Utilizing the "Drift And SHift"observing technique for HST-WFC3 imaging, the COSMOS-DASH survey imaged approximately 0.5 deg2 of the UltraVISTA deep stripes (0.7 deg2, when combined with archival data). Global structural parameters are measured for 51,586 galaxies within COSMOS-DASH using GALFIT (excluding the CANDELS area) with detection using a deep multi-band HST image. We recover consistent results with those from the deeper 3D-HST morphological catalogs, finding that, in general, sizes and Sérsic indices of typical galaxies are accurate to limiting magnitudes of H 160 < 23 and H 160 < 22 ABmag, respectively. In size-mass parameter space, galaxies in COSMOS-DASH demonstrate robust morphological measurements out to z ∼2 and down to log(M∗/Mo˙)∼9 . With the advantage of the larger area of COSMOS-DASH, we measure a flattening of the quiescent size-mass relation below log(M∗/Mo˙)∼10.5 that persists out to z ∼2. We show that environment is not the primary driver of this flattening, at least out to z = 1.2, whereas internal physical processes may instead govern the structural evolution.
AB - We present the H 160 morphological catalogs for the COSMOS-DASH survey, the largest area near-IR survey using HST-WFC3 to date. Utilizing the "Drift And SHift"observing technique for HST-WFC3 imaging, the COSMOS-DASH survey imaged approximately 0.5 deg2 of the UltraVISTA deep stripes (0.7 deg2, when combined with archival data). Global structural parameters are measured for 51,586 galaxies within COSMOS-DASH using GALFIT (excluding the CANDELS area) with detection using a deep multi-band HST image. We recover consistent results with those from the deeper 3D-HST morphological catalogs, finding that, in general, sizes and Sérsic indices of typical galaxies are accurate to limiting magnitudes of H 160 < 23 and H 160 < 22 ABmag, respectively. In size-mass parameter space, galaxies in COSMOS-DASH demonstrate robust morphological measurements out to z ∼2 and down to log(M∗/Mo˙)∼9 . With the advantage of the larger area of COSMOS-DASH, we measure a flattening of the quiescent size-mass relation below log(M∗/Mo˙)∼10.5 that persists out to z ∼2. We show that environment is not the primary driver of this flattening, at least out to z = 1.2, whereas internal physical processes may instead govern the structural evolution.
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U2 - 10.3847/1538-4357/ac341c
DO - 10.3847/1538-4357/ac341c
M3 - Article
AN - SCOPUS:85125861148
SN - 0004-637X
VL - 925
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 34
ER -