IRAS observations and the stellar content of H II regions in the Large Magellanic Cloud

Details IRAS observations and the stellar content of H II regions in the Large Magellanic Cloud IRAS observations and the stellar content of H II regions in the Large Magellanic Cloud

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...397..542d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 397, no. 2, p. 542-551.

Astronomy and Astrophysics

Astronomy

25

H Ii Regions, Infrared Astronomy Satellite, Magellanic Clouds, Star Distribution, Astronomical Models, Star Clusters, Star Formation, Stellar Luminosity

Scientific paper

IRAS far-infrared fluxes are presented for six H II regions in the LMC. These regions are the sites of recent, massive star formation where the radiative heating source is young stars rather than the general interstellar radiation field. As such, the observations become building blocks for the interpretation of far-infrared emission from spatially unresolved galaxies. In addition, the multiwavelength luminosities of the region then probe the young stellar upper initial mass function. With the long-range goal of determining the stellar content of unresolved star-forming regions, we present the results of a simple model which combines the infrared data with existing H-alpha/H-beta and thermal radio data. For the two OB associations where the mass function has been determined directly, the model correctly 'predicts' a solar neighborhood upper mass function within the uncertainties. No evidence is found for upper mass functions significantly different from that in the solar neighborhood.

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