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Title

The binary second sequence in cluster colour-magnitude diagrams

Author(s)

Hurley, Jarrod R.;  Tout, Christopher A.

Abstract

We show how the second sequence seen lying above the main sequence in cluster colour-magnitude diagrams results from binaries with a large range of mass ratios and not just from those with equal masses. We conclude that the presence of a densely populated second sequence, with only sparse filling in between it and the single star main sequence, does not necessarily imply that binary mass ratios are close to unity.

Publication type

Journal article

Source

Monthly Notices of the Royal Astronomical Society, Vol. 300, no. 4 (November 1998), p. 977-980

Publication year

1998

Keyword(s)

Binaries;  Globular clusters;  Photometry;  Praesepe;  Space telescope observations;  Star clusters;  Stars

Publisher

Blackwell

ISSN

0035-8711

Publisher URL

http://dx.doi.org/10.1046/j.1365-8711.1998.01981.x

Copyright

Copyright © 1998 the authors. Journal compilation copyright © 1998 Royal Astronomical Society. The accepted manuscript of the paper is reproduced here in accordance with the copyright policy of the publisher. The definitive publication is available at www.interscience.wiley.com.

Full text

Peer reviewed