NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-20 T14:31:50 PDT
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For refcode 2014ApJ...782....4K:
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Copyright by American Astronomical Society. Reproduced by permission
2014ApJ...782....4K Infall of Nearby Galaxies into the Virgo Cluster as Traced with Hubble Space Telescope Karachentsev, Igor. D.; Tully, R. Brent; Wu, Po-Feng; Shaya, Edward J.; Dolphin, Andrew E. Abstract. We measured the tip of the red giant branch distances to nine galaxies in the direction to the Virgo cluster using the Advanced Camera for Surveys on the Hubble Space Telescope. These distances put seven galaxies (GR 34, UGC 7512, NGC 4517, IC 3583, NGC 4600, VCC 2037, and KDG 215) in front of Virgo and two galaxies (IC 3023 and KDG 177) likely inside the cluster. Distances and radial velocities of the galaxies situated between us and the Virgo core clearly exhibit the infall phenomenon toward the cluster. In the case of spherically symmetric radial infall, we estimate the radius of the "zero-velocity surface" to be (7.2 +/- 0.7) Mpc, which yields a total mass of the Virgo cluster of (8.0 +/- 2.3) x 10^14^ M_sun_, in good agreement with its virial mass estimates. We conclude that the Virgo outskirts do not contain significant amounts of dark matter beyond their virial radius. Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program GO 12878. Key words: galaxies: clusters: individual: Virgo, galaxies: distances and redshifts, galaxies: kinematics and dynamics
Retrieve 15 NED objects in this reference.
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