A CO survey of regions around 34 open clusters

Results are presented from a systematic search for CO emission from regions around 34 young open clusters in the outer Galaxy. The clusters have well-determined distances ranging from about 1 to 5 kpc and ages not greater than about 100 Myr. It was found that some moderately young clusters have no a...

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Bibliographic Details
Published inThe Astrophysical journal. Supplement series Vol. 70; no. 4; pp. 731 - 812
Main Authors Leisawitz, David, Bash, Frank N., Thaddeus, Patrick
Format Journal Article
LanguageEnglish
Published Legacy CDMS University of Chicago Press 01.08.1989
Subjects
640105 - Astrophysics & Cosmology- Galaxies
AGE ESTIMATION
Astronomy
Astrophysics
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC GASES
DISTANCE
Earth, ocean, space
EMISSION SPECTRA
Exact sciences and technology
FLUIDS
GALAXIES
GASES
Globular clusters in the milky way
INTERSTELLAR SPACE
MASS
MILKY WAY
MOLECULES
NEBULAE
OXIDES
OXYGEN COMPOUNDS
RADIAL VELOCITY
SPACE
SPECTRA
STAR CLUSTERS
STAR EVOLUTION
Stellar clusters and associations
Stellar systems. Galactic and extragalactic objects and systems. The universe
VELOCITY
Radio map
Stellar formation
Molecular cloud
H II region
Open cluster
Physical parameter
Rotational transition
Data table
Carbon monoxide
Radio observation
Interstellar matter
Interstellar molecule
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Summary:Results are presented from a systematic search for CO emission from regions around 34 young open clusters in the outer Galaxy. The clusters have well-determined distances ranging from about 1 to 5 kpc and ages not greater than about 100 Myr. It was found that some moderately young clusters have no associated CO emission. All the surveyed clusters younger than about 5 Myr have associated with them at least one molecular cloud more massive than 10,000 solar mass, while the molecular clouds associated with clusters older than about 10 Myr are not more massive than a few thousands solar masses. It was also found that molecular clouds are receding from young clusters at a rate of about 10 km/sec, and that they seem to be destroyed by their interaction with the stars. Sites of ongoing star formation were identified in a number of clouds associated with young clusters.
Bibliography:CDMS
Legacy CDMS
ISSN:0067-0049
1538-4365
DOI:10.1086/191357