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Objects in NGC 205 Resolved into Stellar Associations by HST Ultraviolet Imaging

Michele Cappellari·Francesco Bertola·David Burstein·Lucio M. Buson·Laura Greggio·Alvio Renzini
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Abstract

We have obtained high resolution UV images with the HST+WFPC2 of the central region of the dwarf elliptical galaxy NGC 205. Our images reveal that many of the hot UV stars previously detected and studied from the ground are actually multiple systems, open clusters and star associations. We have performed photometry of two such clusters and we find our data are consistent with stellar ages of 50 and 100 Myr, respectively. From the number of massive stars in NGC 205 we estimate that the star formation episode in this galaxy has turned ~1,000 Msolar of gas into stars over the last 100 Myr.

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Michele Cappellari, Francesco Bertola, David Burstein, Lucio M. Buson, Laura Greggio, Alvio Renzini. 1999-01-07. Objects in NGC 205 Resolved into Stellar Associations by HST Ultraviolet Imaging. https://doi.org/10.1086/311966

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