ANS ultraviolet observations of external galaxies. I - Exciting stars of H II regions in the Large Magellanic Cloud

Abstract

view Abstract Citations (69) References (37) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS ANS ultraviolet observations of external galaxies. I. Exciting stars of H II regions in the Large Magellanic Cloud. Israel, F. P. ; Koornneef, J. Abstract We present UV observations in the wavelength range A of the star clusters in several H ii regions belonging to the Large Magellanic Cloud (LMC). The early type stars (spectral types 0, B, and A) in these clusters are characterized by a moderately steep luminosity function that is close to the Salpeter-Sandage initial luminosity function for early type stars. We confirm the general shape of the reddening law as derived earlier by the use of a different method. The total luminosity of the 30 Dor star cluster is about 108 L0, while the luminosities of the other observed regions are 0.5-1.0 x 10 L0. The central object R136 contributes significantly to the excitation of 30 Dor. Subject headings: galaxies: Magellanic Clouds - luminosity function - nebulae: general - nebulae: individual - ultraviolet: spectra Publication: The Astrophysical Journal Pub Date: June 1979 DOI: 10.1086/157095 Bibcode: 1979ApJ...230..390I Keywords: Astronomical Netherlands Satellite; H Ii Regions; Magellanic Clouds; Star Clusters; Stellar Luminosity; Ultraviolet Astronomy; Early Stars; Nebulae; Red Shift; Stellar Spectra; Ubv Spectra; Astrophysics; Early-Type Stars:Luminosity Function; H II Regions:Magellanic Clouds; Magellanic Clouds:UV Radiation full text sources ADS | data products NED (2) SIMBAD (1) Related Materials (1) Part 2: 1986A&AS...66..117I