[vsnet-chat 1813] Re: [vsnet-obs 20232] Re: GM Sgr

[Erik Kuulkers <erikk@sron.nl>]

Dear all,


> On Fri, 23 Apr 1999, Berto Monard wrote:

> you stated 
> //
> It's classified as a non-cv in the CV catalog of Downes et al..
> //
> 
> that's why it was scrapped from my observing program, not that I had
> made many observations of it then. 
> Any good reasons why we should monitor it, a symbiotic variable
> perhaps? 

It is not clear what kind of variable it is. It's mean magnitude seems to
be around 15 or so with occasional outbursts up to ~13 mag (Goranskij
1990, IBVS 3464). It's spectrum in quiescence does not show cataclysmic
variable-like features, i.e. it is typical for a late-type spectrum
(Downes et al. 1995, AJ 110, 1824). A (flaring) X-ray transient has been
detected by SAX (designated SAX J1819.3-2525), with a position coincident
with that of GM Sgr (In 't Zand et al. 1999, IAU Circ 7119). It seems to
be on and variable for about 2 months or so.

Regards,

Erik Kuulkers

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