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Bulk Motion of Galaxies and Hubble Flow Anisotropy on a Scale of 100 Mpc

Published online by Cambridge University Press:  26 May 2016

S. L. Parnovsky ,
V. E. Karachentseva ,
Yu. N. Kudrya  and
I. D. Karachentsev
S. L. Parnovsky
Affiliation:
Astronomical Observatory of Kyiv Taras Shevchenko National University, Observatorna St 3, Kyiv 04053, Ukraine
V. E. Karachentseva
Affiliation:
Astronomical Observatory of Kyiv Taras Shevchenko National University, Observatorna St 3, Kyiv 04053, Ukraine
Yu. N. Kudrya
Affiliation:
Astronomical Observatory of Kyiv Taras Shevchenko National University, Observatorna St 3, Kyiv 04053, Ukraine
I. D. Karachentsev
Affiliation:
Special Astrophysical Observatory, N.Arkhyz, KChR, 369167, Russia

Abstract

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We study a large-scale bulk motion of thin edge-on spiral galaxies from the RFGC catalogue using a multipole decomposition of velocity field. The quadrupole and octupole components are statistically significant. The first one corresponds to the Hubble flow anisotropy, the second one leads to decrease of modulus of dipole component due to the strong dipole-octupole interaction.

Type
Part XII: Poster Papers
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 501 - 502
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

Karachentsev, I. D., Karachentseva, V. E. & Parnovsky, S. L. 1993, AN, 313, 97 (FGC).Google Scholar
Karachentsev, I. D., Karachentseva, V. E., Kudrya, Yu. N., Sharina, M. E. & Parnovsky, S. L. 1999, Bull. SAO, 47, 5 (RFGC).Google Scholar
Karachentsev, I. D., Karachentseva, V. E., Kudrya, Yu. N., Makarov, D. I. & Parnovsky, S. L. 2000, Bull. SAO, 50, accepted.Google Scholar