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Peculiar velocities of 3000 spiral galaxies from the 2MFGC catalog.

Authors :
Karachentsev, I. D.
Kudrya, Yu. N.
Karachentseva, V. E.
Mitronova, S. N.
Source :
Astrophysics. Oct2006, Vol. 49 Issue 4, p450-461. 12p. 1 Chart, 5 Graphs.
Publication Year :
2006

Abstract

The 2MFGC catalog we have used contains 18020 galaxies selected from the extended objects in the 2MASS infrared sky survey as having apparent ratios of the axes b/a<0.3. Most of them are spiral galaxies of later morphological types whose disks are seen almost edge-on. The individual distances to the 2724 2MFGC galaxies with known rotation velocities and radial velocities are determined using a multiparameter infrared Tully-Fisher relation. A list of the distances and peculiar velocities of these galaxies is presented. The collective motion of the 2MFGC galaxies relative to the cosmic microwave background is characterized by a velocity V = 199 ± 37 km/s in the direction l = 304° ±11°, b = −8°±8°. Our list is currently the most representative and uniform sample for analyzing non-Hubble motions of galaxies on a scale of ∼100 Mpc. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
05717256
Volume :
49
Issue :
4
Database :
Academic Search Index
Journal :
Astrophysics
Publication Type :
Academic Journal
Accession number :
23332759
Full Text :
https://doi.org/10.1007/s10511-006-0044-9