Studies of a sample of CPM stars |
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Authors: | J -L Halbwachs |
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Institution: | (1) Observatoire de Strasbourg, France |
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Abstract: | Summary A sample of CPM stars selected from the AGK2/3 is used to investigate the following points: (a) What is the distribution of
mass ratios of binaries with wide separations?, and (b) what is the proportion of wide binaries among stars. The distribution
previously derived from the visual binaries of theBright Star Catalogue seem to be an acceptable solution to question (a). On the basis of this, the proportion of stars that have a companion with
a separation between 300 and 10000 AU is found to be about 13%. Another possibility is that the distribution of mass ratios
is similar to the initial mass function derived by Miller and Scalo (1979) for stars lighter than the Sun. The proportion
of wide binaries with mass ratios greater than 0.16 should then be around 17%. |
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