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arxiv: 1704.07648 · v1 · pith:OTBZMQYGnew · submitted 2017-04-25 · 🌌 astro-ph.GA

DDO 161 and UGCA 319: an isolated pair of nearby dwarf galaxies

I. D. Karachentsev , L. N. Makarova , R. B. Tully , L. Rizzi , V. E. Karachentseva , E. Shaya This is my paper
classification 🌌 astro-ph.GA
keywords galaxiesclusterdwarfisolatednearbypairugcabranch
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We report HST/ACS observations of two nearby gas-rich dwarf galaxies: DDO 161 and UGCA 319. Their distances determined via the Tip of the Red Giant Branch are 6.03 (-0.21/+0.29) Mpc and 5.75+-0.18 Mpc, respectively. The galaxies form an isolated pair dynamically well separated from the nearest neighbors: KK 176 (7.28+-0.29 Mpc) and NGC 5068 (5.16+-0.21 Mpc). All four galaxies have a bulk spatial peculiar velocity towards the Virgo cluster of ~158+-17 km/s in the Local Group rest frame and ~330 km/s with respect to the cluster center.

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