Journal Article

Binarity among Cepheids in the Magellanic Clouds

László Szabados and Dóra Nehéz

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 426, issue 4, pages 3148-3153
Published in print November 2012 | ISSN: 0035-8711
Published online November 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21872.x
Binarity among Cepheids in the Magellanic Clouds

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Abstract

The spectroscopic binarity of the Cepheid variable HV914 in the Large Magellanic Cloud is identified from published radial velocity observational data. The list of known binaries among Cepheid-type variable stars in the Magellanic Clouds is published in tabular form. The census indicates a serious deficiency of Cepheids with known companions compared with their Galactic counterparts; the implications of this are also discussed. A particular amplitude ratio () of individual Magellanic Cepheids is studied in order to select promising candidate spectroscopic binaries worthy of thorough radial velocity studies.

Keywords: binaries: general; stars: variables: Cepheids; Magellanic Clouds

Journal Article.  2770 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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