The C/O ratio in N type carbon stars - Observations and theory

Details The C/O ratio in N type carbon stars - Observations and theory The C/O ratio in N type carbon stars - Observations and theory

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..261f&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, March 1988, p. 261-266. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

Asymptotic Giant Branch Stars, Carbon, Carbon Stars, Oxygen, Stellar Mass, Frequency Distribution, Open Clusters, Ratios, Stellar Evolution

Scientific paper

Frequency distribution for the C/O ratio in N type carbon stars in simulated populations of the asymptotic giant branch for Salpeter initial mass function, a constant stellar birth rate history and a coefficient alpha = 1 in the Reimers formula of mass loss rate was obtained. This distribution was compared with observed ones. The best agreement was obtained with C/O values from the work of Eglitis (1988). In the Galaxy, N type stars may form only from the stars with initial mass less than 1.5 solar masses due to relatively small initial heavy element abundance in these stars; this is the main reason for the absence of carbon stars in open clusters in the Galaxy.

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