The young stellar population of NGC 4214 as observed with HST. II. Results

Details The young stellar population of NGC 4214 as observed with HST. II. Results The young stellar population of NGC 4214 as observed with HST. II. Results

2007-08-26

arxiv.org/abs/0708.3510v1

Astron.J.133:932-951,2007

Astronomy and Astrophysics

Astrophysics

49 pages, 12 figures, 6 tables

Scientific paper

10.1086/509503

We present the results of a detailed UV-optical study of the nearby dwarf starburst galaxy NGC 4214 using multifilter HST/WFPC2+STIS photometry. The stellar extinction is found to be quite patchy, with some areas having values of E(4405-5495)< 0.1 mag and others, associated with star forming regions, much more heavily obscured, a result which is consistent with previous studies of the nebular extinction. We determined the ratio of blue-to-red supergiants and found it to be consistent with theoretical models for the metallicity of the SMC. The stellar IMF of the field in the range 20-100 solar masses is found to be steeper than Salpeter. A number of massive clusters and associations with ages between a few and 200 million years are detected and their properties are discussed.

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