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Objects in NGC 205 Resolved into Stellar Associationsby [ITAL]Hubble Space Telescope[/ITAL] Ultraviolet Imaging
Author(s) -
Michele Cappellari,
F. Bertola,
David Burstein,
L. M. Buson,
L. Greggio,
A. Renzini
Publication year - 1999
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/311966
Subject(s) - physics , astrophysics , stars , hubble space telescope , astronomy , hubble sequence , photometry (optics) , galaxy , dwarf galaxy , hubble ultra deep field , star cluster , advanced camera for surveys , star formation , hubble deep field south , hubble deep field , spiral galaxy
We have obtained high resolution UV images with the HST+WFPC2 of the centralregion of the dwarf elliptical galaxy NGC 205. Our images reveal that many ofthe hot UV stars previously detected and studied from the ground are actuallymultiple systems, open clusters and star associations. We have performedphotometry of two such clusters and we find our data are consistent withstellar ages of 50 and 100 Myr, respectively. From the number of massive starsin NGC 205 we estimate that the star formation episode in this galaxy hasturned ~1,000 Msolar of gas into stars over the last 100 Myr.Comment: 10 pages, LaTeX, with 4 PostScript figures, Submitted to The Astrophysical Journal Letter

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