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Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group

Lianou, S; Grebel, E.; Da Costa, Gary; Rejkuba, Marina; Jerjen, Helmut; Koch, A


Aims. We focus on the resolved stellar populations of one early-type and four transition-type dwarf galaxies in the Sculptor group, with the aim to examine the potential presence of population gradients and place constraints on their mean metallicities. Methods. We use deep Hubble Space Telescope images to construct color-magnitude diagrams, from which we select stellar populations that trace different evolutionary phases in order to constrain their range of ages and metallicities, as well as...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1051/0004-6361/201219959


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