3D-HST+CANDELS: THE EVOLUTION OF THE GALAXY SIZE–MASS DISTRIBUTION SINCE z = 3
A. van der Wel,Marijn Franx,P. G. van Dokkum,Rosalind E. Skelton,Ivelina Momcheva,Katherine E. Whitaker,Gabriel B. Brammer,Eric F. Bell,Hans-Walter Rix,Stijn Wuyts,Henry C. Ferguson,Bradford P. Holden,Guillermo Barro,Anton M. Koekemoer,Yu-Yen Chang,Elizabeth J. McGrath,B. Haussler,B. Haussler,Avishai Dekel,Peter Behroozi,Michele Fumagalli,Joel Leja,Britt Lundgren,Michael V. Maseda,Erica J. Nelson,David A. Wake,David A. Wake,Shannon G. Patel,Ivo Labbé,Sandra M. Faber,Norman A. Grogin,Dale D. Kocevski +31 more
TLDR
In this paper, the galaxy size-mass distribution over the redshift range 0 3 × 10{sup 9} M {sub ☉}, and steep, R{sub eff}∝M{sub ∗}{sup 0.75}, for early-type galaxies with stellar mass > 2 × 10,sup 10} M{sub ǫ, and the intrinsic scattermore is ≲0.2 dex for all galaxy types and redshifts.Abstract:
Spectroscopic+photometric redshifts, stellar mass estimates, and rest-frame colors from the 3D-HST survey are combined with structural parameter measurements from CANDELS imaging to determine the galaxy size-mass distribution over the redshift range 0 3 × 10{sup 9} M {sub ☉}, and steep, R{sub eff}∝M{sub ∗}{sup 0.75}, for early-type galaxies with stellar mass >2 × 10{sup 10} M {sub ☉}. The intrinsic scattermore » is ≲0.2 dex for all galaxy types and redshifts. For late-type galaxies, the logarithmic size distribution is not symmetric but is skewed toward small sizes: at all redshifts and masses, a tail of small late-type galaxies exists that overlaps in size with the early-type galaxy population. The number density of massive (∼10{sup 11} M {sub ☉}), compact (R {sub eff} < 2 kpc) early-type galaxies increases from z = 3 to z = 1.5-2 and then strongly decreases at later cosmic times.« lessread more
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A New Method for Wide-Field Near-IR Imaging with the Hubble Space Telescope
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