[vsnet-chat 2786] Re: V915 Sgr (Skiff)

[Taichi Kato <tkato>]

Re: V915 Sgr (Skiff)

>      The Tycho-2 color (B-V=0.65) and the Pena b-y (1.00) are quite
> _inconsistent_, since the b-y corresponds to B-V ~1.6.  I suggest that
> they have measured the slightly brighter red star ~3' NW, whose Tycho-2
> B-V is consistent with their b-y.  You wouldn't expect an RCB star to be
> so red when bright but instead roughly solar color.  The star NW is
> probably a garden-variety early-M giant (and presumably it is not V915).

    Please refer to Pena et al., who gave an unreddened color of b-y=0.44,
and suggested the F-G spectrum.

Regards,
Taichi Kato

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