Statistical Investigation for Binary Frequency among Pulsating Variables Based on the Catalogue of Bright Stars in 1982

Details Statistical Investigation for Binary Frequency among Pulsating Variables Based on the Catalogue of Bright Stars in 1982 Statistical Investigation for Binary Frequency among Pulsating Variables Based on the Catalogue of Bright Stars in 1982

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987acaps...7..129j&link_type=abstract

Acta Astrophysica Sinica, Vol. 7:2, P. 129, 1987

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

The authors find that the binary frequencies of late-type giants and sub-giants are much lower than that of dwarfs and decrease gradually from 0.46 of F to 0.24 of K type, but that of early-type giants and subgiants are the same with that of dwarfs: about 0.50. They also find that the early-type pulsating variables have 10% to 20% more binaries than non variables within the same spectral range. This result is very important, especially for cepheids.

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