Discovery and photometric study of the new in-the-gap SU UMa Dwarf Nova Var 73 Dra

Details Discovery and photometric study of the new in-the-gap SU UMa Dwarf Nova Var 73 Dra Discovery and photometric study of the new in-the-gap SU UMa Dwarf Nova Var 73 Dra

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...391..565a&link_type=abstract

Astronomy and Astrophysics, v.391, p.565-569 (2002)

Astronomy and Astrophysics

Astrophysics

6

Stars: Dwarf Novae, Stars: Individual: Var73 Dra

Scientific paper

We present the discovery and the first investigation of the new dwarf nova Var 73 Dra. We carried out monitoring and time-resolved CCD observations in 2001 August-October and detected several normal outbursts with a recurrence time of about 7-8 days and one slightly brighter superoutburst with a ``plateau'' phase that lasted 13 days. Our photometry during the superoutburst clearly shows the presence of superhumps with the period 0.0954 (+/- 0.0001) day (although the one-day alias period, 0.1053 d, could not be ruled out). So, the observed features allow us to classify Var 73 Dra as a new SU UMa-type dwarf nova within the well-known gap of orbital period distribution of cataclysmic variables.

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