Identification and Analysis of Young Star Cluster Candidates in M31 | Zendy

Benjamin F. Williams | Zendy; P. W. Hodge | Zendy

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Identification and Analysis of Young Star Cluster Candidates in M31

Author(s) -

Benjamin F. Williams,

P. W. Hodge

Publication year - 2001

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 - 10.1086/322424

Subject(s) - stars , cluster (spacecraft) , photometry (optics) , astrophysics , star cluster , identification (biology) , star (game theory) , physics , computer science , biology , programming language , botany

We present a method for finding clusters of young stars in M31 usingbroadband WFPC2 data from the HST data archive. Applying our identificationmethod to 13 WFPC2 fields, covering an area of ~60 arcmin^2, has revealed 79new candidate young star clusters in these portions of the M31 disk. Most ofthese clusters are small (~<5 pc) young (~10-200 Myr) star groups locatedwithin large OB associations. We have estimated the reddening values and theages of each candidate individually by fitting isochrones to the stellarphotometry. We provide a catalog of the candidates including roughapproximations of their reddenings and ages. We also look for patterns ofcluster formation with galactocentric distance, but our rough estimates are notprecise enough to reveal any clear patterns.Comment: 32 pages, 9 figures, 5 tables, accepted to Ap

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