Triple mode Cepheid masses

Details Triple mode Cepheid masses Triple mode Cepheid masses

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980cpsp.book...97k&link_type=abstract

In NASA. Goddard Space Flight Center Current Probl. in Stellar Pulsation Instabilities p 97-111 (SEE N80-25229 15-90)

Computer Science

Cepheid Variables, Stellar Mass, Stellar Structure, Composition (Property), Modes, Periodic Variations, Pulses, Stellar Winds

Scientific paper

Unconventional composition structures are proposed to explain the periods of the triple mode Cepheid aC And. A strong Cepheid wind appears to enrich helium in the convection zones down to about 60,000 K or 70,000 K. Then some downward partial mixing occurs to the bottom of a layer with about 1-q = .0005 of the stellar mass. It was found that AC And was not unlike anomalous Cepheids. However, masses of betwen one and two solar masses are suggested and the population is more likely a type two.

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