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arXiv · astro-ph/9807108

The Binary Second Sequence in Cluster Colour--Magnitude Diagrams

Jarrod Hurley·Christopher A. Tout
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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.

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Jarrod Hurley, Christopher A. Tout. 1998-07-10. The Binary Second Sequence in Cluster Colour--Magnitude Diagrams. https://doi.org/10.1046/j.1365-8711.1998.01981.x

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