期刊
ASTROPHYSICAL JOURNAL
卷 861, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aac5e6
关键词
galaxies: clusters; galaxies: evolution; galaxies: groups: general; galaxies: star formation; galaxies: structure
资金
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- American Museum of Natural History
- Astrophysical Institute Potsdam
- University of Basel
- University of Cambridge
- Case Western Reserve University
- University of Chicago
- Drexel University
- Fermilab
- Institute for Advanced Study
- Japan Participation Group
- Johns Hopkins University
- Joint Institute for Nuclear Astrophysics
- Kavli Institute for Particle Astrophysics and Cosmology
- Korean Scientist Group
- Chinese Academy of Sciences (LAMOST)
- Los Alamos National Laboratory
- Max-Planck-Institute for Astronomy (MPIA)
- Max-Planck-Institute for Astrophysics (MPA)
- New Mexico State University
- Ohio State University
- University of Pittsburgh
- University of Portsmouth
- Princeton University
- United States Naval Observatory
- University of Washington
- Astrophysical Research Consortium
We present the stellar mass profiles of 147 isolated quiescent galaxies in very low-density environments (i.e., void regions) in the local universe (0.01 < z < 0.06) from the Sloan Digital Sky Survey. These galaxies have stellar masses between 9.8 less than or similar to log(M-*/ M-circle dot) less than or similar to 11.2 and they represent similar to 15% of the whole galaxy population in the void regions down to M-r - -19. We do not find any isolated quiescent galaxies with log(M-*/M-circle dot) greater than or similar to 11.2. We compare the stellar mass profiles of these isolated quiescent galaxies with those of the profiles of stellar mass-matched samples of the quiescent galaxies in group and cluster environments. We find that, at a fixed mass, quiescent galaxies in voids have similar central (1 kpc) mass densities (Sigma(1)) and central velocity dispersions (sigma(1)) compared to their counterparts in groups and clusters. We show that quiescent galaxies in voids have at most 10%-25% smaller half-mass (and half-light) sizes compared to quiescent galaxies in groups and clusters. We conclude that for the intermediate stellar mass range of 10(10)-10(11) M-circle dot in the local universe, environmental mechanisms have no significant additional effect on the mass profiles of the quiescent galaxies.
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