Issue |
A&A
Volume 391, Number 2, August IV 2002
|
|
---|---|---|
Page(s) | 565 - 569 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361:20020704 | |
Published online | 02 August 2002 |
Discovery and photometric study of the new in-the-gap SU UMa Dwarf Nova Var 73 Dra
1
Sternberg Astronomical Institute (SAI), 13, University Ave., Moscow 119992, Russia and Isaac Newton Institute of Chile, Moscow Branch, Russia e-mail: antipin@sai.msu.ru
2
Crimean Astrophysical Observatory, Nauchny, 98409 Crimea, Ukraine and Isaac Newton Institute of Chile, Crimean Branch, Ukraine e-mail: pavlenko@crao.crimea.ua
Corresponding author: E. P. Pavlenko, pavlenko@crao.crimea.ua
Received:
19
April
2002
Accepted:
6
May
2002
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 () 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.
Key words: stars: dwarf novae / stars: individual: Var73 Dra
© ESO, 2002
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