Ultraviolet photometry of OB associations in M31

Details Ultraviolet photometry of OB associations in M31 Ultraviolet photometry of OB associations in M31

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...414l...9h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 414, no. 1, p. L9-L12.

Astronomy and Astrophysics

Astronomy

9

Sky Surveys (Astronomy), Spiral Galaxies, Stellar Luminosity, Stellar Magnitude, Ultraviolet Astronomy, Astronomical Photometry, Color-Magnitude Diagram, Interstellar Extinction

Scientific paper

The study obtains near-UV and FUV magnitudes for 76 massive stars in 24 OB associations in the central and southern portions of M31 from images obtained by the Ultraviolet Imaging Telescope (UIT) during the Astro 1 spacelab mission. A comparison is made with the previous UIT photometry of 30 stars in the giant association NGC 206. Extinctions are estimated from the relation between E(B - V) and the distance from the center of M31 derived by Hodge and Lee (1988) from topical CCD stellar photometry. From evolutionary models, lower limits to the maximum stellar mass are estimated at about 60-100 solar masses in NGC 206, A29, A61, A63, A130, and A132. For other associations, the limits are in the range of about 20-55 solar masses.

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