Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...244..273m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 244, no. 2, April 1991, p. 273-279. Research supported by CSIC and DGICYT.
Astronomy and Astrophysics
Astrophysics
22
H Ii Regions, Star Formation, Starburst Galaxies, Wolf-Rayet Stars, Astronomical Catalogs, Metallicity, Stellar Evolution, Stellar Mass, Stellar Spectra
Scientific paper
A systematic search of Wolf-Rayet (WR) features in the spectra of the objects in the Spectroscopic Catalog of H II Galaxies is described. The global detection rate and its possible dependence on metallicity are considered. Properties of the systems with detected WR features are discussed. The apparent lack of WR detection in low-metallicity systems is attributed to the fact that massive stars never reach the WR stage in such media. The SNeII contribution to the Blue Bump is analyzed, and it is concluded that large Blue-Bump luminosities should be expected in regions with SN contamination; therefore, it is not advisable to translate Blue-Bump luminosities into the number of WR stars directly.
Del Olmo Ascension
Masegosa Josefa
Moles Mariano
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