Me and my mates are still trying to figure out this weird star, GSC 3196-641. We think it is a rotating, spotted star, perhaps similar to the image above, which is a computer reconstruction of the star AB Dor. I’ll spell out the facts here and perhaps you can tell me what you think.
We see 2 strong periods at P=0.77 and P=0.38 days. It is a G7-type star. We think it is a dwarf (luminosity class V). It appears to be correlated with an X-ray source as well as a UV source. It’s spectrum does not show CaII H&K line emission, (which one expects with star spots) on our low-resolution spectrum.
We thought at first it might be a double-mode RR Lyrae star, but they are giants and they are bluer than this star. The high proper motion (19 mas/yr) would lead one to believe it is close and small and not far away and big. The spectral type comes from a spectrum, not photometry, so isn’t effected by interstellar reddening.
I’ve talked about this star a lot and I think we have it figured out. The only main outstanding mystery is the absence of the CaII H&K lines. We need a high-rez spectrum to sort this out.