Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-01-03
Astronomy and Astrophysics
Astrophysics
6 pages, 5 figures, accepted for publication in PASJ
Scientific paper
We carried out time-resolved $V$-band photometry of DM Lyr during long outbursts in 1996 July and in 1996 February-March at Ouda Station, Kyoto University and at Osaka Kyoiku University. Since superhumps were clearly detected in the light curves, DM Lyr was first identified with an SU UMa-type dwarf nova. The superhump period is 0.0673(2) d, and the superhump excess is 2.8(3) %. The duration of the superoutburst, the outburst amplitude, the decline rate in the plateau phase, and the superhump excess were typical values for a usual SU UMa star. According to visual and CCD observations reported to VSNET, this star has experienced a dramatic change of the outburst pattern from a superoutburst phase to a normal outburst phase. There may exist mechanisms to decrease the number of the normal outburst between two successive superoutbursts and to elongate the recurrence cycle of the superoutburst.
Baba Hideshi
Kato Taichi
Matsumoto Katsumi
Nogami Daisaku
No associations
LandOfFree
The SU UMa Nature of the Dwarf Nova, DM Lyrae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The SU UMa Nature of the Dwarf Nova, DM Lyrae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The SU UMa Nature of the Dwarf Nova, DM Lyrae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-250149