The isolated dSph galaxy KKs3 in the local Hubble flow

被引：15

作者：

Karachentsev, I. D. ^{[1
]}

Kniazev, A. Yu. ^{[2
,3
,4
]}

Sharina, M. E. ^{[1
]}

机构：

[1] Russian Acad Sci, Special Astrophys Observ, Moscow 117901, Russia

[2] S African Astron Observ, ZA-7935 Cape Town, South Africa

[3] Southern African Large Telescope Fdn, ZA-7935 Cape Town, South Africa

[4] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia

来源：

ASTRONOMISCHE NACHRICHTEN | 2015年 / 336卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

galaxies: distances and redshifts; galaxies: dwarf; galaxies: individual (KKs3); AFRICAN LARGE TELESCOPE; H-I OBSERVATIONS; NEARBY GALAXIES; DISTANCES; MOTION;

D O I：

10.1002/asna.201512207

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 kms(-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. (C) 2015 WILEY-VCH Verlag GmbH& Co. KGaA, Weinheim

引用

页码：707 / 714

页数：8

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