Binary stars in Praesepe | Zendy

Pavel Kroupa | Zendy; Christopher A. Tout | Zendy

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Binary stars in Praesepe

Author(s) -

Pavel Kroupa,

Christopher A. Tout

Publication year - 1992

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/259.2.223

Subject(s) - physics , astrophysics , stars , binary number , uncorrelated , luminosity function , luminosity , diagram , hertzsprung–russell diagram , population , magnitude (astronomy) , binary star , neighbourhood (mathematics) , initial mass function , visual binary , astronomy , stellar evolution , galaxy , star formation , statistics , arithmetic , mathematics , mathematical analysis , demography , sociology

We consider the luminosity function and the distribution of stars in the colour-magnitude diagram for Praesepe. The luminosity function is consistent with the solar neighbourhood function but is not sufficiently complete at faint magnitudes to constrain binary system properties. The colour-magnitude data are consistent with a large binary population. Systems with 1.0≥B−V≥0.8 seem to favour uncorrelated masses while bluer systems tend towards equal masses. Redder than B−V≃1.0, the data are not good enough to analyse the effects of binary stars

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