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%.
Similar content being viewed by others
References
Halbwachs, J. L.: 1986a,Astron. Astrophys. 168, 161.
Halbwachs, J. L.: 1986b,Astron. Astrophys. Suppl. Ser. 66, 131.
Halbwachs, J. L.: 1987,Astron. Astrophys. 183, 234.
Lacroute, P. and Valbousquet, A.: 1974,Astron. Astrophys. Suppl. Ser. 16, 345.
Luyten, W. J.: 1922,Publ. Astron. Soc. Pacific 34, 156.
Miller, G. E. and Scalo, J. M.: 1979,Astrophys. J. Suppl. Ser. 41, 513.
Ochsenbein, F. and Egret, D.: 1981,Bull. Inf. C.D.S.,20, 60.
Öpik, E. J.: 1924,Publ. Obs. Astron. Univ. Tartu XXV, No. 6.
Salpeter, E. E.: 1955,Astrophys. J. 121, 161.
Trimble, V.: 1988,Astron. Nachr., preprint.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Halbwachs, J.L. Studies of a sample of CPM stars. Astrophys Space Sci 142, 139–143 (1988). https://doi.org/10.1007/BF00656194
Issue Date:
DOI: https://doi.org/10.1007/BF00656194