Communication Dans Un Congrès Année : 2000

Distance and Dynamical Mass of the Virgo Cluster

Résumé

Tolman-Bondi-model and distances from the Tully-Fisher relation yield a distance to Virgo cluster 20-24 Mpc. Comparison with Virgo core galaxies (Federspielet al.) seems to favour 24 Mpc. High quality distances from the extragalactic Cepheid PL-relation support 21 Mpc, which is our preferred value (Ekholm et al., \cite{E00}) . The Virgo cluster mass is 1.5-2 times larger than the Virgo virial mass (Tully & Shaya ). We find a steeper density profile for the gravitating matter (2.5-2.85) than for luminous matter (2.3).

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Dates et versions

insu-04838889 , version 1 (15-12-2024)

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T. Ekholm, P. Lanoix, P. Teerikorpi, P. Fouque, G. Paturel. Distance and Dynamical Mass of the Virgo Cluster. Constructing the Universe with Clusters of Galaxies, 0000, à renseigner, Unknown Region. ⟨insu-04838889⟩
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