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

Kudrya, Yu. N. and Karachentseva, V. E. and Karachentsev, I. D. and Mitronova, S. N. and Jarrett, T. H. and Huchtmeier, W. K. (2003) The bulk motion of flat edge-on galaxies based on 2MASS photometry. Astronomy and Astrophysics, 407 (3). pp. 889-898. ISSN 0004-6361.

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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, K_s TF relations and find that Kron Jfe magnitudes show the smallest dispersion on the TF diagram. For the sample of 971 RFGC galaxies with V_(3K) < 18000 km s^(-1) we find a dispersion σ_(TF) = 0.42^m and an amplitude of bulk flow V = 199 ± 61 km s^(-1), 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 (100–150 km s^(-1)) is seen towards the Pisces-Perseus supercluster, as well as the Hercules – Coma – Corona Borealis supercluster regions.

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Jarrett, T. H.0000-0002-4939-734X
Additional Information:© 2003 ESO. Article published by EDP Sciences. Received 11 February 2003; Accepted 12 May 2003; Published online 17 November 2003. We thank Dmitry Makarov for help in the design of Figs. 4 and 5. This paper makes use of data from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. We have made use of the LEDA database ( This research was partially supported by DFG-RFBR grant 436RUS 113/701/0-1.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Deutsche Forschungsgemeinschaft (DFG)436RUS 113/701/0-1
Russian Foundation for Basic ResearchUNSPECIFIED
Subject Keywords:galaxies: spiral – galaxies: fundamental parameters
Issue or Number:3
Record Number:CaltechAUTHORS:20180228-073207490
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Official Citation:The bulk motion of flat edge-on galaxies based on 2MASS photometry. Yu. N. Kudrya, V. E. Karachentseva, I. D. Karachentsev, S. N. Mitronova, T. H. Jarrett and W. K. Huchtmeier. A&A, 407 3 (2003) 889-898. DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84982
Deposited By: Tony Diaz
Deposited On:28 Feb 2018 20:00
Last Modified:03 Oct 2019 19:25

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