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Dwarf spheroidal galaxies in the M81 group of galaxies
Author(s) -
Lianou S.,
Grebel E.K.,
Koch 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.200911277
Subject(s) - physics , dwarf galaxy , astrophysics , galaxy group , dwarf spheroidal galaxy , galaxy , metallicity , dwarf galaxy problem , astronomy , sky , local group , luminous infrared galaxy
We study the properties of the dwarf galaxy population in the nearby interacting M81 group of galaxies. In particular, we are deriving the metallicity distribution functions, the ages and the star formation histories of these dwarf galaxies based on data from the Hubble Space Telescope's Advanced Camera for Surveys and the Sloan Digital Sky Survey. We are correlating this information with the dwarf galaxies' position in the group in order to derive the impact of interactions and environment on their evolution. Here we present preliminary results on the metallicity distribution functions of dwarf spheroidals in the M81 group (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)