Initial mass function for early-type stars in starburst galaxies
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(1400 A)/C IV(1550 A). 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. 46 references.
- Research Organization:
- New Mexico State Univ., Las Cruces
- OSTI ID:
- 5619179
- Journal Information:
- Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 94; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
GALACTIC EVOLUTION
GALAXIES
H2 REGIONS
MASS
SPECTRA
STAR EVOLUTION
STARS
ULTRAVIOLET SPECTRA
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
GALACTIC EVOLUTION
GALAXIES
H2 REGIONS
MASS
SPECTRA
STAR EVOLUTION
STARS
ULTRAVIOLET SPECTRA