[vsnet-alert 676] CVC 124

[Tonny Vanmunster <tvanmuns@innet.be>]

BELGIAN ASTRONOMICAL SOCIETY V.V.S. -  Working Group Variable Stars
Cataclysmic Variables Circular No.124              1997, January 12
Ed.: T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM
     Internet: tvanmuns@innet.be                  TEL. 32-11-831504
     CBA Belgium Web Page : http://vsnet.astro.columbia.edu/~cba/be
===================================================================

V701 Tau [UGSU, 15.0p - <21p]
=============================

Tonny Vanmunster, CBA Belgium reports an outburst detection by CCD
of this little studied object. Available observations :

1997 Jan 03.044 UT, [14.7  (G. Poyner, 0.40-m refl.);
     Jan 11.941 UT,  15.7  (T. Vanmunster, 0.25-m SCT + unfilt. CCD);


V701 Tau was last seen in outburst on December 25, 1995 by T. Van-
munster, Belgium (first ever visual observation) at mag. 14.5 [CVC 75].
This outburst lasted for more than 2 weeks [CVC 78]. Shortly after
the outburst detection, an extensive CCD photometry campaign was 
conducted by Taichi Kato and his team at Ouda Observatory, Japan. 
They found superhumps [CVC 76] with a period of 0.0689 day, thus 
classifying the object as an UGSU-type dwarf nova.

During that outburst, it further was discovered that the variable
is slightly mis-identified in Downes and Shara, and the correct
position should read : R.A. = 03h44m01s.91, Decl. = +21d57'07".2 
(J2000.0) [CVC 76].


It would be interesting to determine if the present outburst is
a normal one or a superoutburst. We have started a time-series CCD
photometry session, but will not be able to continue this for more
than approx. 90 minutes, given the low altitude of the object.
We'd appreciate assistance from other longitudes.


Tonny Vanmunster

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp