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[vsnet-obs 744] Double-peaked max. of AY Lyr
- Date: Tue, 11 Jul 1995 00:25:32 +0200
- To: vsnet-obs@kusastro.kyoto-u.ac.jp
- From: tvanmuns@innet.be (Tonny Vanmunster)
- Subject: [vsnet-obs 744] Double-peaked max. of AY Lyr
- Reply-To: vsnet-obs@kusastro.kyoto-u.ac.jp
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Dear colleagues,
A few days ago, Lasse Jensen listed some of his AY Lyr observations,
that clearly indicate the existence of a double-peaked maximum.
Double-peaked maxima, although not at all common, have been observed
and/or suspected in a number of UGSU-type dwarf novae. Some examples
recently were quoted in the CVC's.
Concerning AY Lyr itself, a similar double-peaked maximum was observed
by the undersigned about one year ago, during another superoutburst of
AY Lyr. Here are the observations :
1994.0529 13.2 (AAVSO Sequence)
1994.0530 13.7
1994.0531 14.5
1994.0605 13.1
1994.0607 13.1
1994.0612 13.1
1994.0614 13.7
1994.0619 [14.2
I think there is no sound theoretical explanation yet for the observed
behaviour ...
Regards,
Tonny
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