Redistribution of OB star luminosity and the warming of nearby molecular clouds

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166704· OSTI ID:6594413

Leisawitz, D; Hauser, M G

IRAS observations of the neighborhoods of six H II regions in the outer Galaxy are correlated with CO maps of the same regions. It is found that more than half of the far-IR luminosity from within about 25 to 75 pc of the ionizing stars is contributed by dust associated with molecular clouds. It is shown that a major and increasing fraction of the OB cluster starlight is not absorbed locally. The observations suggest that the H II regions are not radiation-bounded and have ion densities of about 1/cu cm. A model describing the interstellar environment of OB star clusters as a function of time is presented. 53 references.

• Research Organization: NASA, Goddard Space Flight Center, Greenbelt, MD (USA)
• OSTI ID: 6594413
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 332; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC DUST
COSMIC GASES
COSMIC RADIO SOURCES
DISTRIBUTION
DUSTS
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FLUIDS
GALAXIES
GASES
H2 REGIONS
INFRARED RADIATION
INTERSTELLAR SPACE
ION DENSITY
LUMINOSITY
MATHEMATICAL MODELS
MILKY WAY
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SPACE
SPATIAL DISTRIBUTION
STAR CLUSTERS
STELLAR RADIATION
TIME DEPENDENCE