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SCG0018‐4854: A young and dynamic compact group
Author(s) -
Presotto V.,
Temporin S.,
Pompei E.,
Iovino A.
Publication year - 2009
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200911275
Subject(s) - physics , astrophysics , galaxy , galaxy group , sky , group (periodic table) , velocity dispersion , compact group , galaxy formation and evolution , geometry , mathematics , lie group , quantum mechanics
It is widely recognized in the literature that processes taking place within the group environment are among the main drivers of galaxy evolution. SCG0018‐4854 is a compact group of galaxies located at a distance of v ∼ 3200 km s –1 . It is composed of four galaxy members, very close to each other on the sky: their median projected distance is only ∼20 Kpc ( H = 70 km s –1 Mpc –1 ). The remarkably high local galaxy density coupled with the low velocity dispersion (∼100 km s –1 ) characterizing this group, makes SCG001 8‐4854 a test case to study in detail the interplay between the environment and the galaxy properties. We present here some of the properties of the group members that are related to their mutual interaction, as derived from our kinematical and morphological analysis (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)