Back to Search
Start Over
Diagnosing DASH: A Catalog of Structural Properties for the COSMOS-DASH Survey.
- Source :
- Astrophysical Journal; 1/20/2022, Vol. 925 Issue 1, p1-22, 22p
- Publication Year :
- 2022
-
Abstract
- We present the H <subscript>160</subscript> 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 deg<superscript>2</superscript> of the UltraVISTA deep stripes (0.7 deg<superscript>2</superscript>, 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 <subscript>160</subscript> < 23 and H <subscript>160</subscript> < 22 ABmag, respectively. In size-mass parameter space, galaxies in COSMOS-DASH demonstrate robust morphological measurements out to z ⼠2 and down to log (M ⋆ / M ⊙) ⼠9. With the advantage of the larger area of COSMOS-DASH, we measure a flattening of the quiescent size-mass relation below log (M ⋆ / M ⊙) ⼠10.5 that persists out to z ⼠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. [ABSTRACT FROM AUTHOR]
- Subjects :
- CATALOGS
CATALOGING
GALACTIC evolution
DIAGNOSIS
STELLAR mass
Subjects
Details
- Language :
- English
- ISSN :
- 0004637X
- Volume :
- 925
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Astrophysical Journal
- Publication Type :
- Academic Journal
- Accession number :
- 154934661
- Full Text :
- https://doi.org/10.3847/1538-4357/ac341c