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Paper detail

The hot R Coronae Borealis star DY Centauri is a binary

The remarkable hot R Coronae Borealis star DY Cen is revealed to be the first and only binary system to be found among the R Coronae Borealis (RCB) stars and their likely relatives, including the Extreme Helium stars and the hydrogen-deficient carbon stars. Radial velocity determinations from 1982-2010 have shown DY Cen is a single-lined spectroscopic binary in an eccentric orbit with a period of 39.67 days. It is also one of the hottest and most H-rich member of the class of RCB stars. The system may have evolved from a common-envelope to its current form.

preprint2012arXivOpen access
N. Kameswara RaoDavid L. LambertD. A. Garcia-HernandezC. Simon JefferyVincent M. WoolfBarbara McArthur
astro-ph.SR
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N. Kameswara RaoDavid L. LambertD. A. Garcia-HernandezC. Simon JefferyVincent M. WoolfBarbara McArthur

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