[vsnet-alert 10775] re ST CHA in outburst?

[bydra at Safe-mail.net]

Well, looking at this

<http://www.astrouw.edu.pl/cgi-asas/asas_variable/104716-7928.2,asas3,0,0,1000,0>

When isn't it?

I'm not sure where the full GCVS range is coming from, but looking in the literature, and archived observations, and the mags it was captured in in POSS and UCAC2 and the like, fourteen and a half looks more like the typical min mag.  Literature photometry fits this as being near min mag too.

Following the reference from D&S online, dead archive version, the spectrum doesn't really say CV necessarily either

http://aas.aanda.org/articles/aas/full/1998/13/ds1483/img6.gif

there's only Halpha evidently in emission, maybe GCVS type IS ain't that wrong after all.

Doing google searches I see Rod Stubbings has observed the thing a lot, but I can't find any particular comment from anyone re it being a confirmed CV or that it's been debunked as a CV.  I might not be looking properly.

However, the ASAS3 lightcurve mostly makes the point.

I should have waited for someone else to point this lot out, for no doubt in presenting these evident facts that show no content to the outburst claim I'll be accused of a personal attack whilst commenting on your attempts to channel Ooruri-chan's party piece.  All the more ironic after my stance on the V723 Cas issue no doubt.  However, when you pick up and follow these methods you see other people use on the web, as you often do, you've got to do some of the background learning and context assessment and literature work involved, as observers' time is precious and short.

You've been doing this variable star stuff a long time it seems, and you're always quick to jump and add significance to the smallest moiety of uncontextual data.

Mag 14.5 ish for ST Cha is rather typical in practice, it seems, literature does not confirm it is a dwarf nova, and this is over and beyond the general context of whether or not such a reported lone isolated mag from asas3 survey has any validity.

Well, I get accused of attacking him when I simply baldly correct his errors with facts, so I might as well borrow his trick of editorialising the shit out of everything.

Summary : ST Cha - not particular in outburst, not necessarily a CV, 14.6h is might actually be a fairly typical min mag (though Rod Stubbins data show it can be fainter).

John Greaves