The Hot R Coronae Borealis Star DY Centauri is a Binary

Kameswara Rao, N.; Lambert, David L.; García-Hernández, D. A.; Jeffery, C. Simon; Woolf, Vincent M.; McArthur, Barbara
Bibliographical reference

The Astrophysical Journal Letters, Volume 760, Issue 1, article id. L3, 6pp, (2012).

Advertised on:
11
2012
Number of authors
6
IAC number of authors
1
Citations
0
Refereed citations
0
Description
The remarkable hot R Coronae Borealis (RCB) star DY Cen is revealed to be the first and only binary system to be found among the RCB stars and their likely relatives, including the extreme helium stars and the hydrogen-deficient carbon stars. Radial velocity determinations from 1982 to 2010 have shown that 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.
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