Spiral Galaxies and the Peculiar Velocity Field

Details Spiral Galaxies and the Peculiar Velocity Field Spiral Galaxies and the Peculiar Velocity Field

1998-09-03

arxiv.org/abs/astro-ph/9809041v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figure, uses special conference LaTex macro; to appear in Proceedings of the 14th IAP Coll. "Wide Field Surveys in

Scientific paper

Monopole and dipole signatures of the peculiar velocity field as derived from the SFI sample of field spirals and the SCI and SC2 samples of cluster spirals are presented. The monopole exhibits no evidence of a `Hubble bubble' within 7000 km/s as suggested by Zehavi et al. (1998); the dipole of the reflex motion of the Local Group converges to the CMB dipole within less than 6000 km/s, and remains consistent with it, when referred to the reference frame constituted by the SC2 cluster sample, which extends to 20,000 km/s.

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