Birthrate and mass function in the Magellanic Clouds

Details Birthrate and mass function in the Magellanic Clouds Birthrate and mass function in the Magellanic Clouds

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....83..275d&link_type=abstract

Astronomy and Astrophysics, vol. 83, no. 3, Mar. 1980, p. 275-286. Research supported by the Swiss National Science Foundation.

Mathematics

31

Magellanic Clouds, Stellar Evolution, Stellar Mass, Supergiant Stars, Astronomical Catalogs, Chemical Composition, Functions (Mathematics), Hertzsprung-Russell Diagram, Stellar Structure

Scientific paper

The supergiant stars in LMC and SMC from different catalogues are used to derive the birthrate and mass function of stars with masses not less than 9 solar masses. Theoretical input data are postmain-sequence evolutionary tracks of supergiants, transformed into the plane of the H-R diagram. It is found that the birthrates per unit total mass of massive stars (not less than 9 solar masses) in the galactic neighborhood and in LMC agree at least within a factor of 1.5, whereas the SMC birthrate is roughly two times higher than locally and in the LMC. In addition, the mass function of SMC and possibly LMC appears to be significantly flatter than that of the solar neighborhood.

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