Abstract
view Abstract Citations (7) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS How important is star formation by the spiral density wave in the disk of our Galaxy? Kaufman, M. Abstract A method is presented for using the observed distribution of H II regions in a spiral galaxy to calculate the percentage of young stars formed by the spiral density wave. In the disk of our Galaxy, star formation by high-mass stars is responsible for at least 40% of the high-mass stars, and is likely to account for 60% of the star births. The value of the time constant T describing the efficiency of star formations by high-mass stars and the UBV colors in normal elliptical galaxies imply that the average past value of T is less than or equal to 10 to the 9th yr. Thus a similar range of values for the efficiency of star formation of high-mass stars may apply both to the present disk of our Galaxy and to the average past evolution of elliptical galaxies. Publication: The Astrophysical Journal Pub Date: September 1979 DOI: 10.1086/157331 Bibcode: 1979ApJ...232..717K Keywords: Galactic Evolution; Milky Way Galaxy; Star Formation; Density Wave Model; H Ii Regions; Spatial Distribution; Spiral Galaxies; Stellar Evolution; Astrophysics; Density Waves:Star Formation; Galaxy:Star Formation full text sources ADS |
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