UV and optical photometry of 508 stars in 37 M31 OB associations.

Details UV and optical photometry of 508 stars in 37 M31 OB associations. UV and optical photometry of 508 stars in 37 M31 OB associations.

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...182.4905h&link_type=abstract

American Astronomical Society, 182nd AAS Meeting, #49.05; Bulletin of the American Astronomical Society, Vol. 25, p.882

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Scientific paper

Magnitudes are measured in up to 5 bands (far-UV, near-UV, U, B, and R) for 508 massive stars in 37 M31 OB Associations. {m249}-B vs. {m249} and {m152-m249} vs. {m152} color magnitude diagrams are presented. Comparison with the evolutionary tracks of massive stars show that the likely mass range of the brightest association stars is 60-70 \msol in NGC 206 (A78) and A69, and 20-40 \msol in the other associations. Ages for the most recent star formation in the 24 associations with both near-UV and far-UV stellar photometry are estimated at 3--10 Myr, by assuming the star with the largest far-UV flux to be a supergiant at the age of maximum luminosity. Maximum stellar masses are also estimated for each association, under this assumption.

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