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    Period variation of selected cepheids (1991)
    Springer
    Astrophysics and space science 183 (1991), S. 17-36 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The aim of the present paper is to study the period as well as γ-velocity changes of 12 cepheid-type variable stars in order to find possible evidence for duplicity. Light-time effect was found in the O-C diagram of RY CMa, the orbital period being about 5200 days. Furthermore, especially spectroscopic observations are needed to confirm the duplicity or render the accurate orbital solution possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00643015
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