The binary second sequence in cluster colour-magnitude diagrams

Author(s)

Hurley, Jarrod R.; Tout, Christopher A.

Available versions

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 year

1998

Publication type

Journal article

Source

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

ISSN

0035-8711

Publisher

Wiley

Copyright

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

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