[vsnet-chat 2985] Re: EsB365 observations and request

[Taichi Kato <tkato>]

Re: EsB365 observations and request

Berto Monard wrote:

> For instance V1860 Sgr is also considered a possible RCB and V803 Cen has
> been as well not so long ago.

   V1860 Sgr is not presently considered as an R CrB star based on
spectroscopy (see a list in Clayton 1996, PASP 108, 225).  The key
discriminating factor is the hydrogen deficiency.

   Yet another historically confusing group was the VY Scl-type CV.  The
prototype VY Scl was originally discovered as a "blue, high galactic
lattitude" R CrB star.  The author of the discovery paper keenly suggested
that there should be two polulations of R CrB stars.

Regards,
Taichi Kato

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