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Confirmation of 1RXS J165443.5-191620 as an intermediate polar and its orbital and spin periods
S. Scaringi, S. Connolly, J. Patterson +12
Aims: We investigate the physical nature of the X-ray emitting source 1RXS J165443.5-191620 through optical photometry and time-resolved spectroscopy. Methods: Optical photometry i…
Kyoto Conference Dinner Speech: Follow-up in the age of surveys
Paul J. Groot
Future big surveys are going to provide many targets of rare compact binary populations that will require photometric and spectroscopic follow-up to use them to answer questions on…
SDSS J0926+3624: The shortest period eclipsing binary star
C. M. Copperwheat, T. R. Marsh, S. P. Littlefair +12
With orbital periods of the order of tens of minutes or less, the AM Canum Venaticorum stars are ultracompact, hydrogen deficient binaries with the shortest periods of any binary s…
Spectroscopic Evidence for a 5.4-Minute Orbital Period in HM Cancri
G. H. A. Roelofs, A. Rau, T. R. Marsh +3
HM Cancri is a candidate ultracompact binary white dwarf with an apparent orbital period of only 5.4 minutes, as suggested by X-ray and optical light-curve modulations on that peri…