Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis

Details Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis

2010-09-09

arxiv.org/abs/1009.1725v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

20 pages, 10 figures, accepted for publication in the Journal of the British Astronomical Association

Scientific paper

We report photometry of three outbursts of NN Cam in 2007, 2008 and 2009. The 2007 event started with a normal outburst, lasting about 4 days, which was a precursor to a superoutburst lasting at least 13 days. Both the precursor and the superoutburst had an amplitude of 4.9 mag above mean quiescence. Superhumps with a maximum peak-to-peak amplitude of 0.22 mag were detected during the superoutburst with a mean superhump period Psh = 0.07385(56) d. Psh decreased continuously with dPsh /dt = -1.72(23) x 10-3. We used our measurement to confirm that the shorter of two possible values of Porb reported by another researcher is the correct one, Porb = 0.0717 d. The 2008 outburst was rather poorly observed, although we present evidence that this too may have been a superoutburst. The 2009 event was also a superoutburst, with Psh = 0.07414(44) d, but we could find no evidence for a precursor. From the 2007 and 2009 data, we report a superhump period excess of epsilon = 0.030(8) to 0.034(6), which is typical for SU UMa dwarf novae of similar orbital period, and estimate the binary mass ratio q = Mwd/Msec $\simeq$ 0.11 to 0.17

Affiliated with

Also associated with

No associations

Rating

Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis 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 Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-558759