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Orbital Period of the Dwarf Nova RXS J053234.9+624755

Ann B. Kapusta·John R. Thorstensen
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Abstract

We report spectroscopy of the newly discovered SU Ursae Majoris dwarf nova identified with the x-ray source RXS J053234.9+624755. Radial velocities of the H-alpha emission line in the quiescent state give an orbital period of 0.05620(4) d (80.93 min), which is among the shortest for SU UMa stars with determined periods. We also report UBVI magnitudes of the quiescent dwarf nova and surrounding stars. Using a previous measurement of the superhump period, we find the fractional superhump excess epsilon to be 0.016(4), which is not atypical of dwarf novae in this period range.

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Ann B. Kapusta, John R. Thorstensen. 2006-07-05. Orbital Period of the Dwarf Nova RXS J053234.9+624755. https://doi.org/10.1086/507345

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