2MASS/SDSS Close Major-Merger Galaxy Pairs
Abstract
We select a close "major-merger candidate" galaxy pair sample in order to calculate the K_s luminosity function (LF) and pair fraction representative of the merger/interaction component of galaxy evolution in the local universe. The pair sample (projected separation 5 h^(–1) kpc ≤ r≤ 20 h ^(–1) kpc, K_s -band magnitude difference ΔK_s ≤ 1 mag) is selected by combining the Two Micron All Sky Survey (2MASS) with the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5). The resulting data set contains 340 galaxies covering 5800 deg^2. A stellar mass function is also translated from the LF. A differential pair fraction displays nearly constant fraction of galaxy pairs as a function of galaxy mass from 10^9 to 10^(11.5) M_☉ . The differential pair fraction is less subject to absolute magnitude bias due to survey limitations than the standard total pair fraction. These results suggest that major-merger candidate pairs in the 0
Additional Information
© 2009. The American Astronomical Society. Print publication: Issue 2 (2009 April 20). Received 2008 August 8, accepted for publication 2009 January 30. Published 2009 April 7. This publication makes use of data products from the 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation This research has made use of the NASA/IPAC Extragalactic Database (NED) and the NASA/ IPAC Infrared Science Archive which are operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration Funding for the SDSS has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho, and theMax Planck Society. The SDSSWeb site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium (ARC) for the Participating Institutions. The Participating Institutions are The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, the Korean Scientist Group, Los Alamos National Laboratory, the Max-Planck- Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington.Attached Files
Published - Domingue2009p2084Astrophys_J.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:c41028e2279ce0ba92b2ff9dffe31043
|
536.4 kB | Preview Download |
Additional details
- Eprint ID
- 15219
- Resolver ID
- CaltechAUTHORS:20090821-082012785
- NASA
- NSF
- Department of Energy (DOE)
- Japanese Monbukagakusho
- Max Planck Society
- Created
-
2009-09-09Created from EPrint's datestamp field
- Updated
-
2021-11-08Created from EPrint's last_modified field