EDP Sciences
Free access
Volume 486, Number 2, August I 2008
Page(s) 529 - 531
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:200809843
Published online 09 June 2008

A&A 486, 529-531 (2008)
DOI: 10.1051/0004-6361:200809843

Research Note

NSV 13983: a new dwarf nova in the period gap

C. Contreras and C. Tappert

Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica, Casilla 306, Santiago 22, Chile
    e-mail: ccontrer@astro.puc.cl

Received 25 March 2008 / Accepted 12 May 2008

Aims. NSV 13983 is catalogued as a dwarf nova based on a reported outburst from 2005. The system has not yet been studied spectroscopically. We attempt to confirm its nature as a dwarf nova and determine its orbital period.
Methods. We derive the orbital period by using time-resolved spectroscopic data to measure radial velocities.
Results. The average spectrum shows evidence that the system is a dwarf nova in quiescence. The radial velocity curves derived from measurements of the spectral lines H$\alpha$ and H$\beta$, show a clear modulation with a period of 2.76 h. This places NSV 13983 below the upper edge of the gap in the period distribution of cataclysmic variables, implying that it is the 14th dwarf nova in the gap.

Key words: stars: dwarf novae -- stars: individual: NSV 13983

© ESO 2008