[vsnet-chat 3507] Re: 2MASS colours in RCB & RVTAU stars

[no name <crawl@zoom.co.uk>]

Peter Guilbault wrote:

> > B-V for such stars, [which include some carbon stars in the RCBs] is
> > usually quite reddish.
> 
> An excellent read on this subject is "The R Coronae Borealis Stars" by 
> Geoff Clayton, published in the Publications of the Astronomical Society of 
> the Pacific, v108, p.225. Readily available on the ADS.

Thanks!

I've had a scan read...

So I'd guess that the relatively "flat" J, H, Ks colour profiles are
reflecting the circumstellar material in RCB and RVTau stars, whilst in
LPVs the steeper profiles are reflecting the black body profiles of the
stellar flux.

Cheers

John

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