Isolated dSph galaxy KKs3 in the local Hubble flow

Abstract

We present the SALT spectroscopy of a globular cluster in the center of the nearby isolated dSph galaxy KKs3 situated at a distance of 2.12 Mpc. Its heliocentric radial velocity is 316+-7 km/s that corresponds to V_{LG} = 112 km/s in the Local Group (LG) reference frame. We use its distance and velocity along with the data on other 35 field galaxies in the proximity of the LG to trace the local Hubble flow. Some basic properties of the local field galaxies: their morphology, absolute magnitudes, average surface brightnesses, specific star formation rates, and hydrogen mass-to-stellar mass ratios are briefly discussed. Surprisingly, the sample of the neighboring isolated galaxies displays no signs of compression under the influence of the expanding Local Void.

12 pages, 6 figures, 1 table, accepted in the Astronomische Nachrichten

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• The spatial distribution of globular clusters in dwarf spheroidal galaxies and the timing problem
• Euclid preparation. LVIII. Detecting globular clusters in the Euclid survey
• Can the apparent expansion of the Universe be attributed to an increasing vacuum refractive index ?
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• Zangetsu: A Candidate of Isolated, Quiescent, and Backsplash Ultra-Diffuse Galaxy in the COSMOS Field
• Gradients of metallicity and age of stars in the dwarf spheroidal galaxies KKs3 and ESO269-66