2003/02/04 by I. D. Karachentsev, E. K. Grebel, M. E. Sharina +7 · 1 citation
Physics and Astronomy · #astro-ph
paper · pdf · doi:10.1051/0004-6361:20030170
published as Astron.Astrophys.404:93-112,2003 · 20 pages, 6 figures, A&A accepted. Figure 2 (5444k) is available at http://luna.sao.ru/~sme/fig2Sculptor.tar.gz
arxiv created 2003/02/04 · arxiv updated 2011/05/23
We present an analysis of Hubble Space Telescope/WFPC2 images of nine nearby galaxies in Sculptor. We derive their distances from the luminosity of the tip of the red giant branch stars with a typical accuracy of ~ 12%. Their distances are 4.21 Mpc (Sc22), 4.92 Mpc (DDO226), 3.94 Mpc (NGC253), 3.40 Mpc (KDG2), 3.34 Mpc (DDO6), 3.42 Mpc (ESO540-030), 4.43 Mpc (ESO245-05), 4.27 Mpc (UGCA442), and 3.91 Mpc (NGC7793). The galaxies are concentrated in several spatially separated loose groups around NGC300, NGC253, and NGC7793. The Sculptor galaxy complex together with the CVn I cloud and the Local Group form a 10 Mpc amorphous filament, apparently driven by the free Hubble flow.