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Ultraviolet Imaging Telescope Observations of the Magellanic Clouds

Published online by Cambridge University Press:  25 May 2016

Joel Wm. Parker ,
Jesse K. Hill ,
Robert Cornett ,
Joan Hollis ,
Emily Zamkoff ,
Ralph C. Bohlin ,
Robert W. O'Connell ,
Susan G. Neff ,
Andrew M. Smith  and
Theodore P. Stecher
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Joel Wm. Parker
Affiliation:
Southwest Research Institute, Boulder, CO 80302, USA
Jesse K. Hill
Affiliation:
Raytheon STX Corporation, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Robert Cornett
Affiliation:
Raytheon STX Corporation, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Joan Hollis
Affiliation:
Raytheon STX Corporation, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Emily Zamkoff
Affiliation:
Raytheon STX Corporation, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Ralph C. Bohlin
Affiliation:
STScI, 3700 San Martin Dr., Baltimore, MD 21218, USA
Robert W. O'Connell
Affiliation:
Astronomy Dept., Univ. of Virginia, Charlottesville, VA 22903, USA
Susan G. Neff
Affiliation:
Laboratory for Astronomy and Solar Physics, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Andrew M. Smith
Affiliation:
Laboratory for Astronomy and Solar Physics, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Theodore P. Stecher
Affiliation:
Laboratory for Astronomy and Solar Physics, NASA&Apos;s GSFC, Greenbelt, MD 20771, USA
Morton S. Roberts
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA

Abstract

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We present an analysis of wide-field, far-ultraviolet images of the LMC and SMC obtained by the Ultraviolet Imaging Telescope. The photometric catalog of over 37,000 stars allows us to make large-scale, statistical studies of massive star formation in OB associations and in the field population. Our results show that: (1) the most probable slope for the initial mass function (IMF) of field stars is Γ = −1.80, slightly steeper than the Salpeter slope; and (2) there doesn't seem to be a single, unique IMF slope for stars in OB associations, with a range of values from Γ = −1.0 to −2.0. We also analyze the stellar vs. diffuse UV flux, and the population of OB star candidates in the field.

Type
Part 3. Massive Stars and 30 Doradus
Information
Symposium - International Astronomical Union , Volume 190: New Views of the Magellanic Clouds , 1999 , pp. 237 - 238
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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