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[vsnet-obs 2441] CY UMa confirmed
- Date: Fri, 22 Mar 1996 02:33:22 -0100
- To: vsnet-obs@kusastro.kyoto-u.ac.jp
- From: Tonny Vanmunster <tvanmuns@innet.be>
- Subject: [vsnet-obs 2441] CY UMa confirmed
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Dear Colleagues,
I have been able to confirm the outburst of CY UMa, reported by Jochen
Pietz, as follows :
1996 Mar 21.999 UT, 13.0 (0.35-m refl., seq: AAVSO);
The previous outburst of CY UMa was reported on Jul 20, 1995 (T. Vanmunster)
[see CVC 46], when the object reached mag 13.9. This was a very short outburst.
In less than 2 days the object faded below mag 14.4 [see CVC 47].
Since this object is no longer on any alert programme, we will not issue a
CVC. Readers interested in the superhump behaviour of CY UMa should
read a recent paper by D. Harvey and J. Patterson (Center for Backyard
Astrophysics, Columbia University, USA), which appeared in PASP, 107, November
1995. The authors report a superhump period P=0.07210 +- 0.00003 d.
The orbital period of CY UMa (0.06798 +- 8x10-5 d) is discussed by I.G.
Martinez-Pais and J. Casares in MNRAS, 275, 1995.
Please monitor the present outburst to at least determine if this is a
normal outburst or superoutburst.
Best regards,
Tonny Vanmunster