期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 426, 期 4, 页码 3148-3153出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2012.21872.x
关键词
binaries: general; stars: variables: Cepheids; Magellanic Clouds
资金
- ESA PECS [C98090]
- ESTEC [4000106398/12/NL/KML]
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 (AV rad /AB) of individual Magellanic Cepheids is studied in order to select promising candidate spectroscopic binaries worthy of thorough radial velocity studies.
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