Virgocentric flow

The Virgocentric flow (VCF) is the preferred movement of Local Group galaxies towards the Virgo cluster[1] caused by its overwhelming gravity, which separates bound objects from the Hubble flow of cosmic expansion. The VCF can refer to the Local Group's movement towards the Virgo Supercluster,[2] since its center is considered synonymous with the Virgo cluster, but more tedious to ascertain due to its much larger volume. The excess velocity of Local Group galaxies towards, and with respect to, the Virgo Cluster are 100 to 400 km/s.[3] This excess velocity is referred to as each galaxy's peculiar velocity.

See also

References

  1. ↑ Chernin, A. D.; Karachentsev, I. D.; Nasonova, O. G.; et al. (September 2010). "Dark energy domination in the Virgocentric flow". A&A 520: id.A104. arXiv:1006.0555. Bibcode:2010A&A...520A.104C. doi:10.1051/0004-6361/201014912. Retrieved 30 November 2014.
  2. ↑ Yahil, Amos (1986). "Is the Criticism of the Virgocentric Flow Model Justified?". In Madore, Barry F.; Tully, R. Breant. Galaxy Distances and Deviations from Universal Expansion. NATO ASI Series. Springer Netherlands. pp. 143–145. doi:10.1007/978-94-009-4702-3_26. ISBN 978-94-009-4702-3. Retrieved 30 November 2014.
  3. ↑ "The Virgo Cluster of Galaxies".


This article is issued from Wikipedia - version of the Monday, June 01, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.