GSC 748-1618

[Tass Mailing List <tass@mail.alembic.net>]

Date: Tue, 20 Feb 2007 22:55:32 -0600
From: Michael Koppelman <lolife@bitstream.net>
To: tass@tass-survey.org
Subject: GSC 748-1618

You guys remember this discussion?

> On Sat, 1 Mar 2003, Patrick Wils wrote:
>
> >
> > --- Doug Welch <welch@physics.mcmaster.ca> wrote:
> > > I am a little curious why people have decided to ignore
> > > my suggestion that this is a short-period, overtone
> > > Cepheid. Perhaps it wouldn't seem so strange then!
> >
> > Yes, I agree now (I was quite sure it was an RR Lyrae star
> before, but
> > it doesn't fit in either of the RRab or RRc class, so it can't be).
> > Aren't these overtone Cepheids always double mode pulsators ?  In
> that
> > case a frequency analysis should reveal a second period of about
> 0.63
> > days.
> >
> > Patrick
> >

Take a look at the attached PNG file. ASAS has since called this a
"DCEP-FO". Does that make sense? I'm not even sure what that means.
We've been thinking this was an RRab but it is too red at B-V~0.7 and
V-I~0.8

Cheers,

M.