Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap.....51..336k&link_type=abstract
Astrophysics, Volume 51, Issue 3, pp.336-348
Astronomy and Astrophysics
Astrophysics
Infrared Tully-Fisher Relation, Cosmic Flows
Scientific paper
The peculiar velocity field for 907 galaxies with heliocentric radial velocities VH ≤ 3000 km/s is examined. The data are divided into three samples, organized according to the principles behind the method for determining the distance to the galaxies: the luminosity of the tip of the red giant branch (TRGB), fluctuations in the surface brightness, and the infrared Tully-Fisher relation for spiral galaxies viewed edge-on. The latter sample includes 410 galaxies. For determining the distance to the galaxies in this sample, additional regressors were introduced into the Tully-Fisher relation, in particular the “color index” K-m21, which make it possible significantly to reduce the dispersion with respect to the regression curve. All three samples showed good agreement in the peculiar velocity distribution. Based on each of these samples, as well as on the combined sample, detailed maps of the field of peculiar velocities of the galaxies are constructed for VH ≤ 3000 km/s. An analysis shows that most of the observed features of this map can be explained by large-scale density variations in the galactic distribution.
No associations
LandOfFree
Multiparametric infrared Tully-Fisher relation as a tool for mapping cosmic flows does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multiparametric infrared Tully-Fisher relation as a tool for mapping cosmic flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiparametric infrared Tully-Fisher relation as a tool for mapping cosmic flows will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1138039