Re: New Stars

[jg <jg@jgws.freeisp.co.uk>]

Johnson B-V for this one (as computed from Tycho BT-VT) is 0.7.  That's
at best late F and more likely early G for spectral type (the Sun's
about BJ-VJ 0.6 and G2 for example).

That probably makes it an RR Lyr candidate rather than a dSct one "at
best", an EW "at worst", the latter possibly most likely (subjective
"statements" are within context of original posting).

No xray or IR sources associated.

Cheers

John G.

Patrick Wils wrote:
> 
> --- Michael Koppelman <lolife@bitstream.net> wrote:
> > With that said, I'm ready for my next star. Anyone got something
> > interesting for me? I like 'em bright, because then I can go with the
> > V
> > filter, but the dimmer ones are fine for unfiltered. I'd prefer
> > something
> > that we suspect is NOT an EW just for variety. Short periods are
> > preferred.
> >   Something in the 18-23 RA range would be good. Anyone? If not, I'll
> > go
> > lookin' myself...
> 
> I guess GSC 00396-00073 may be a good choice then, at V=11.7, amplitude
> about 0.4 mag and in view of the asymmetry of the light curve it looks
> like a Delta Scuti, if the period turns out to be around 5 to 6 hours
> (which I guess it is), or an RR Lyrae, if the period turns out to be
> much longer.  (Note that part of this is just speculation based on two
> 2-hour and two 1-hour stretches of the light curve).