The initial mass function for early-type stars in starburst galaxies

Details The initial mass function for early-type stars in starburst galaxies The initial mass function for early-type stars in starburst galaxies

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94..644s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Sept. 1987, p. 644-650.

Astronomy and Astrophysics

Astronomy

27

Early Stars, Spaceborne Astronomy, Starburst Galaxies, Stellar Mass, Astronomical Catalogs, Data Sampling, Hydrogen Clouds, Iue, Spectral Line Width

Scientific paper

The IMF slope of early-type stars in starburst galaxies is investigated using IUE observations and a technique that utilizes mass-linewidth relations for early-type stars. Fourteen low-resolution IUE spectra of eight starburst galaxies and three H II region galaxies are used to obtain line-strength ratios Si IV (λ1400)/C IV (λ1550). These are compared to model line ratios, and indicate that the average IMF slope for OB stars in these intense star-formation regions is appreciably flatter than that of the solar neighborhood.

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