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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
3D-HST+CANDELS: The evolution of the galaxy size-mass distribution since z = 3
Astrophysical Journal, Volume 788, No. 1, Article 28, Year 2014
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Description
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 < z < 3. Separating early- and late-type galaxies on the basis of star-formation activity, we confirm that early-type galaxies are on average smaller than late-type galaxies at all redshifts, and we find a significantly different rate of average size evolution at fixed galaxy mass, with fast evolution for the early-type population, R eff(1 + z) -1.48, and moderate evolution for the late-type population, R eff(1 + z)-0.75. The large sample size and dynamic range in both galaxy mass and redshift, in combination with the high fidelity of our measurements due to the extensive use of spectroscopic data, not only fortify previous results but also enable us to probe beyond simple average galaxy size measurements. At all redshifts the slope of the size-mass relation is shallow, , for late-type galaxies with stellar mass >3 × 109 M , and steep, , for early-type galaxies with stellar mass >2 × 1010 M . The intrinsic scatter 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 (∼1011 M ), compact (R eff < 2 kpc) early-type galaxies increases from z = 3 to z = 1.5-2 and then strongly decreases at later cosmic times. © 2014. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
van der Wel, Arjen
Germany, Heidelberg
Max Planck Institute for Astronomy
Franx, Marijn
Netherlands, Leiden
Sterrewacht Leiden
Van Dokkum, Pieter G.
United States, New Haven
Yale University
Skelton, Rosalind E.
South Africa, Cape Town
South African Astronomical Observatory
Momcheva, Ivelina G.
United States, New Haven
Yale University
Whitaker, Katherine E.
United States, Greenbelt
Nasa Goddard Space Flight Center
Brammer, Gabriel B.
United States, Baltimore
Space Telescope Science Institute
Bell, Eric F.
United States, Ann Arbor
University of Michigan, Ann Arbor
Rix, Hans Walter R.
Germany, Heidelberg
Max Planck Institute for Astronomy
Wuyts, Stijn
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Ferguson, Henry C.
United States, Baltimore
Space Telescope Science Institute
Holden, Bradford
United States, Mount Hamilton
Lick Observatory
Barro, Guillermo
United States, Mount Hamilton
Lick Observatory
Koekemoer, Anton M.
United States, Baltimore
Space Telescope Science Institute
Chang, Yu Yen
Germany, Heidelberg
Max Planck Institute for Astronomy
McGrath, Elizabeth J.
United States, Waterville
Colby College
Häussler, Boris
United Kingdom, Oxford
University of Oxford
United Kingdom, Hatfield
University of Hertfordshire
Dekel, Avishai
Israel, Jerusalem
Hebrew University of Jerusalem
Behroozi, Peter S.
United States, Baltimore
Space Telescope Science Institute
Fumagalli, Mattia
Netherlands, Leiden
Sterrewacht Leiden
Leja, Joel
United States, New Haven
Yale University
Lundgren, Britt Fisher
United States, Madison
University of Wisconsin-madison
Maseda, Michael V.
Germany, Heidelberg
Max Planck Institute for Astronomy
Nelson, Erica June
United States, New Haven
Yale University
Wake, David A.
United States, Madison
University of Wisconsin-madison
United Kingdom, Milton Keynes
The Open University
Patel, Shannon G.
United States, Pasadena
Carnegie Observatories
Labbé, Ivo
Netherlands, Leiden
Sterrewacht Leiden
Faber, Sandra M.
United States, Mount Hamilton
Lick Observatory
Grogin, Norman A.
United States, Baltimore
Space Telescope Science Institute
Kocevski, Dale D.
United States, Lexington
University of Kentucky
Statistics
Citations: 662
Authors: 30
Affiliations: 17
Identifiers
Doi:
10.1088/0004-637X/788/1/28
ISSN:
0004637X
e-ISSN:
15384357
Study Design
Cross Sectional Study
Study Approach
Quantitative