Comparison of Velocity Fields of the Galaxies From the Catalogs RFGC and MarkIII

Authors: Parnovsky S.L.; Sharov P.Y.

Source: Astrophysics and Space Science, Volume 284, Number 3, 2003 , pp. 1097-1110(14)

Publisher: Springer

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Abstract:

A distribution of matter up to 100 h^-1 Mpc could be obtained from the large-scale galaxy peculiar motions. The best picture of such motion is given for today by two galaxy catalogs, namely MarkIII and RFGC. We compare their velocity fields and show they are very similar and have not only practically the same multipole structure but also a corresponding small-scale motions. We estimate a mean radial component of this small-scale motion as 500–700 kms. An additional comparison of distances to common galaxies is made.

Keywords: galaxy catalogs; large-scale motion; peculiar velocities

Language: English

Document Type: Research article

Affiliations: 1: Astronomical Observatory of Kyiv Taras Shevchenko University, 3, Observatorna st., UA-04053 Kyiv, Ukraine; E-mail: par@observ.univ.kiev.ua

Publication date: 2003-01-01