Properties of H II region populations in galaxies. I. The first-ranked H II regions

Journal Article · Mon Oct 31 23:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166825· OSTI ID:6438605

Kennicutt, Jr, R C

H-alpha photometry of the brightest H II regions in 95 nearby spiral and irregular galaxies has been analyzed in order to study the dependence of the H II region populations on the properties of their parent galaxies. It is found that the brightest H II regions in Magellanic irregular galaxies are about 50 times brighter than those in early-type spirals of the same absolute magnitude. It is suggested that this difference is due to both an increase in the numbers of H II regions in late-type galaxies and a physical change in the characteristic sizes of the star-forming regions. 62 references.

• Research Organization: Minnesota Univ., Minneapolis (USA)
• OSTI ID: 6438605
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
CONFIGURATION
COSMIC RADIO SOURCES
GALAXIES
H2 REGIONS
MAGELLANIC CLOUDS
MATHEMATICAL MODELS
PHOTOMETRY
SPIRAL CONFIGURATION
STAR EVOLUTION