The Nebulosity and Distance of the Cepheid RS Puppis
نویسنده
چکیده
Adopting a distance for RS Pup derived from a period-luminosity relation based on Cepheid parallaxes, it is shown that the phase-lag observations of the surrounding nebulosity by Kervella et al. are well fitted by a model of an equatorial disc at an angle of 8◦.1± 0◦.6 to the plane of the sky. The astrophysical implications of this are briefly mentioned.
منابع مشابه
Comments on “ The long - period Galactic Cepheid RS Puppis . I . A geometric distance from its light echoes ”
Context. The luminous Galactic Cepheid RS Puppis is unique in being surrounded by a dust nebula illuminated by the variable light of the Cepheid. In a recent paper in this journal, Kervella et al. (2008) report a very precise geometric distance to RS Pup, based on measured phase lags of the light variations of individual knots in the reflection nebula. Aims. In this commentary, we examine the v...
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