The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry

Details The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry

2003-05-25

arxiv.org/abs/astro-ph/0305483v1

Astron.Astrophys. 407 (2003) 889-898

Astronomy and Astrophysics

Astrophysics

10 pages, 5 figures. A&A/2003/3582 accepted 15.05.2003

Scientific paper

10.1051/0004-6361:20030857

We report the results of applying the 2MASS Tully-Fisher (TF) relations to study the galaxy bulk flows. For 1141 all-sky distributed flat RFGC galaxies we construct J, H, K_s TF relations and find that Kron $J_{fe}$ magnitudes show the smallest dispersion on the TF diagram. For the sample of 971 RFGC galaxies with V_{3K} < 18000 km/s we find a dispersion $\sigma_{TF}=0.42^m$ and an amplitude of bulk flow V= 199 +/-61 km/s, directed towards l=301 degr +/-18 degr, b=-2 degr +/-15 degr. Our determination of low-amplitude coherent flow is in good agreement with a set of recent data derived from EFAR, PSCz, SCI/SCII samples. The resultant two- dimensional smoothed peculiar velocity field traces well the large-scale density variations in the galaxy distributions. The regions of large positive peculiar velocities lie in the direction of the Great Attractor and Shapley concentration. A significant negative peculiar velocity is seen in the direction of Bootes and in the direction of the Local void. A small positive peculiar velocity (100 -- 150 km/s) is seen towards the Pisces-Perseus supercluster, as well as the Hercules - Coma - Corona Borealis supercluster regions.

Affiliated with

Also associated with

No associations

Rating

The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry 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 The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Bulk Motion of Flat Edge-On Galaxies Based on 2MASS Photometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-713771