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arXiv · 1804.00469

TRGB distances to galaxies in front of the Virgo cluster

Igor D. Karachentsev·Lidia N. Makarova·R. Brent Tully·Luca Rizzi·Edward J. Shaya
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Abstract

Tip of the red giant branch distances are acquired from Hubble Space Telescope images for 16 galaxies to the foreground of the Virgo Cluster. The new distances with 5% accuracy, combined with archival measurements, tightly constrain the near side location of the onset of infall into the Virgo Cluster to be 7.3+-0.3 Mpc from the cluster, reaching within 9 Mpc of the Milky Way. The mass within this turnaround radius about the cluster is 8.3+-0.9 x 10^{14} Msun. Color-magnitude diagrams are provided for galaxies in the study and there is brief discussion of their group affiliations.

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Igor D. Karachentsev, Lidia N. Makarova, R. Brent Tully, Luca Rizzi, Edward J. Shaya. 2018-04-02. TRGB distances to galaxies in front of the Virgo cluster. https://doi.org/10.3847/1538-4357%2Faabaf1

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