[vsnet-alert 2000] CVC 167 (new cataclysmic variable in Draco)

["Tonny Vanmunster" <Tonny.Vanmunster@advalvas.be>]

BELGIAN ASTRONOMICAL SOCIETY V.V.S. -  Working Group Variable Stars
Cataclysmic Variables Circular No.167               1998, August 04
Ed.: T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM
     Internet: Tonny.Vanmunster@advalvas.be       TEL. 32-11-831504
     CVC Web Page : http://vsnet.cba.phys.columbia.edu/cvc
===================================================================

New cataclysmic variable in Draco
=================================

We have been informed by Michael Schwartz, Cottage Grove, OR about
his discovery of a new cataclysmic variable in Draco : "I am 
'responsible' for finding supernova 1998di in an anonymous galaxy
(see IAUC 6982, that was issued on August 3rd). However, spectral 
observations now reveal that this is not a supernova, but a galactic
dwarf nova in outburst, projected near a distant anonymous galaxy".

Michael Schwartz kindly has sent us full details about the related
spectrographic analysis by Jha, Garnavich, Challis and Kirshner 
(Center for Astrophysics), that likely will appear in an IAUC 
tomorrow. The spectrum of the new dwarf nova resembles that of the
helium dwarf nova CR Boo near maximum (Patterson et al., 1997, PASP, 
109, 1100).  

The new object is located at RA = 19h24m38s.19, Decl = +59o41'46".7 
(equinox 2000.0), which is about 0".6 east and 3".8 north of the 
nucleus of an anonymous galaxy. A picture of the new object is 
available at the following URL : 
http://vsnet2.netcom.com/~pfactors/tenagra.html

Some photometric observations :

1998 Jul 22.46 UT, [19    (M. Schwartz, unfiltered CCD image);
     Aug 02.48 UT,  16.8  (M. Schwartz, unfiltered CCD image);


We strongly recommend CCD observers to photometrically monitor this
object.


Tonny Vanmunster

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