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2021RNAAS...5..132S - Research Notes of the AAS, 5, 132 (2021/June-0)

Kepler K2 Measurement of the Rotational Period of the Intermediate Polar 1RXS J180431.1-273932.

SANNE S., O'BRIEN B., LITTLEFIELD C., GARNAVICH P. and SZKODY P.

Abstract (from CDS):

1RXS J180431.1-273932 is an intermediate polar: a cataclysmic variable star with a rapidly rotating, magnetized white dwarf. We analyze the system's Kepler K2 short-cadence light curve and identify a strong, highly coherent pulse with a period of 0.0057171 ± 0.0000002 days, which matches the proposed white dwarf rotational period identified in previous X-ray studies. We establish an ephemeris for the optical spin pulse.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): DQ Herculis stars - White dwarf stars - Cataclysmic variable stars

Simbad objects: 3

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