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Ellipsoidal variability and the difference between sequence D and E red giants

Nicholls, Christine; Wood, Peter R; Cioni, M.-R. L


We have studied a sample of Large Magellanic Cloud red giant binaries that lie on sequence E in the period-luminosity plane. We show that their combined light and velocity curves unambiguously demonstrate that they are binaries showing ellipsoidal variability. By comparing the phased light and velocity curves of both sequence D and E variables, we show that the sequence D variation - the long secondary period - is not caused by ellipsoidal variability. We also demonstrate several further...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2010.16548.x


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