The isolated dSph galaxy KKs3 in the local Hubble flow
Abstract
We present 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-1 that corresponds to V_LG = 112 km s-1 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. The following basic properties of the local field galaxies are briefly discusse: morphology, absolute magnitudes, average surface brightnesses, specific star formation rates, and hydrogen mass-to-stellar mass ratios. Surprisingly, the sample of the neighboring isolated galaxies displays no signs of compression under the influence of the expanding Local Void.
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- September 2015
- DOI:
- 10.1002/asna.201512207
- arXiv:
- arXiv:1508.01289
- Bibcode:
- 2015AN....336..707K
- Keywords:
-
- galaxies: distances and redshifts;
- galaxies: dwarf;
- galaxies: individual (KKs3);
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 12 pages, 6 figures, 1 table, accepted in the Astronomische Nachrichten