2003A&A...407..889K


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.27CET12:20:19

2003A&A...407..889K - Astronomy and Astrophysics, volume 407, 889-898 (2003/9-1)

The bulk motion of flat edge-on galaxies based on 2MASS photometry.

KUDRYA Y.N., KARACHENTSEVA V.E., KARACHENTSEV I.D., MITRONOVA S.N., JARRETT T.H. and HUCHTMEIER W.K.

Abstract (from CDS):

We report the results of applying the 2MASS Tully-Fisher (TF) relations to study galaxy bulk flows. For 1141 all-sky distributed flat RFGC galaxies we construct J, H, Ks TF relations and find that Kron Jfe magnitudes show the smallest dispersion on the TF diagram. For the sample of 971 RFGC galaxies with V3K<18000km/s we find a dispersion σTF=0.42m and an amplitude of bulk flow V= 199±61km/s, directed towards l=301°±18°, b=-2°±15°. Our determination of low-amplitude coherent flow is in good agreement with a set of recent data derived from EFAR, PSCz and 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 (100-150km/s) is seen towards the Pisces-Perseus supercluster, as well as the Hercules - Coma - Corona Borealis supercluster regions.

Abstract Copyright:

Journal keyword(s): galaxies: spiral - galaxies: fundamental parameters

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ACO 82 ClG 00 41 19.500 +25 26 18.90           ~ 18 0
2 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 254 2

    Equat.    Gal    SGal    Ecl

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2021.01.27-12:20:19

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