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