The orbital period of CY UMa

Details The orbital period of CY UMa The orbital period of CY UMa

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.275..699m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 275, Issue 3, pp. 699-702.

Astronomy and Astrophysics

Astronomy

5

Binaries: General, Stars: Individual: Cy Uma, Novae, Cataclysmic Variables

Scientific paper

We present intermediate resolution spectroscopy of the dwarf nova CY UMa in quiescence. From the radial velocities of the Hα emission, we derive an orbital period of 0.067 95+/-8x10^-5 d, which disagrees with previous photometric estimates. We also constrain the system parameters. The core of the Hα emission seems to be dominated by a component almost in phase with the line wings. Such a component would originate in a region opposite to the secondary star with respect to the white dwarf. This effect appears to be a common feature of SU UMa systems.

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