skip to main content
Lingue:

The observed infall of galaxies towards the Virgo cluster

Karachentsev, I. D ; Nasonova, O. G

Monthly Notices of the Royal Astronomical Society, 2010, Vol. 405(2), pp.1075-1083 [Rivista Peer Reviewed]

Fulltext disponibile

Vedi tutte le versioni
Citazioni Citato da
  • Titolo:
    The observed infall of galaxies towards the Virgo cluster
  • Autore: Karachentsev, I. D ; Nasonova, O. G
  • Note di contenuto: We examine the velocity field of galaxies around the Virgo cluster induced by its overdensity. We have studied the velocity–distance relation in Virgocentric coordinates using a sample of 1792 galaxies with distances from the tip of the Red Giant Branch, the Cepheid luminosity, the luminosity of type Ia supernovae, the surface brightness fluctuation method and the Tully–Fisher relation. Attention was paid to some observational biases affecting the Hubble flow around Virgo. We estimate the radius of the zero-velocity surface for the Virgo cluster to be within 5.0–7.5 Mpc, corresponding to 17–26° at the mean cluster distance of 17.0 Mpc. In the case of spherical symmetry with the cosmological parameter Ω m = 0.24 and the age of the Universe T 0 = 13.7 Gyr, it yields the total mass of the Virgo cluster to be within M T = (2.7–8.9) × 10 14 M ⊙ in reasonable agreement with the existing virial mass estimates for the cluster.
  • Fa parte di: Monthly Notices of the Royal Astronomical Society, 2010, Vol. 405(2), pp.1075-1083
  • Soggetti: Galaxies: Clusters: Individual: Virgo ; Dark Matter
  • Tipo: Articolo
  • Identificativo: ISSN: 0035-8711 ; E-ISSN: 1365-2966 ; DOI: 10.1111/j.1365-2966.2010.16501.x

Ricerca in corso nelle risorse remote ...