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.

arXiv comment12 pages, 6 figures, 1 table, accepted in the Astronomische Nachrichten

References in corpus (24)

• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• The Photometric Performance and Calibration of the HST Advanced Camera For Surveys
• The GALEX Ultraviolet Atlas of Nearby Galaxies
• Updated Nearby Galaxy Catalog
• Our Peculiar Motion Away from the Local Void
• Tip of the Red Giant Branch Distances. II. Zero-Point Calibration
• The Local Group and other neighboring galaxy groups
• First science with SALT: peering at the accreting polar caps of the eclipsing polar SDSS J015543.40+002807.2
• The very local Hubble flow
• ALFALFA Discovery of the Nearby Gas-Rich Dwarf Galaxy Leo P. I. HI Observations
• The Hubble flow around the Local Group
• Dwarf Galaxies and the Cosmic Web
• Action Principle Solutions For Galaxy Motions Within 3000 Km/s
• The emptiness of voids: yet another over-abundance problem for the LCDM model
• Life at the Periphery of the Local Group: the kinematics of the Tucana Dwarf Galaxy
• The metallicity extremes of the Sagittarius dSph using SALT spectroscopy of PNe
• Dynamics of Nearby Groups of Galaxies: the role of the cosmological constant
• The quiescent Hubble flow, local dark energy tests, and pairwise velocity dispersion in a $\Omega =1$ universe
• The very local Hubble flow: computer simulations of dynamical history
• A unique isolated dwarf spheroidal galaxy at D=1.9 Mpc
• A new isolated dSph galaxy near the Local Group
• The Local Hubble Flow: Is it a Manifestation of Dark Energy?
• KK258, a new transition dwarf galaxy neighbouring the Local Group
• Dark energy domination in the local flow of giant galaxies

Cited by in corpus (12)

• Extending the Globular Cluster System-Halo Mass Relation to the Lowest Galaxy Masses
• Environmental Quenching of Low-Mass Field Galaxies
• Void galaxies in the nearby Universe. I. Sample description
• Discovery of a red backsplash galaxy candidate near M81
• Hedgehog: An Isolated Quiescent Dwarf Galaxy at 2.4 Mpc
• The Tucana dwarf spheroidal: a distant backsplash galaxy of M31?
• 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 ?
• The emergence of globular clusters and globular-cluster-like dwarfs
• 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