SIMBAD references

2018MNRAS.477.5646G - Mon. Not. R. Astron. Soc., 477, 5646-5656 (2018/July-2)

A 15.7-minAM CVn binary discovered in K2.

GREEN M.J., HERMES J.J., MARSH T.R., STEEGHS D.T.H., BELL K.J., LITTLEFAIR S.P., PARSONS S.G., DENNIHY E., FUCHS J.T., REDING J.S., KAISER B.C., ASHLEY R.P., BREEDT E., DHILLON V.S., GENTILE FUSILLO N.P., KERRY P. and SAHMAN D.I.

Abstract (from CDS):

We present the discovery of SDSS J135154.46-064309.0, a short-period variable observed using 30-mincadence photometry in K2 Campaign 6. Follow-up spectroscopy and high-speed photometry support a classification as a new member of the rare class of ultracompact accreting binaries known as AM CVn stars. The spectroscopic orbital period of 15.65 ± 0.12 min makes this system the fourth-shortest-period AM CVn known, and the second system of this type to be discovered by the Kepler spacecraft. The K2 data show photometric periods at 15.7306 ± 0.0003 min, 16.1121 ± 0.0004 min, and 664.82 ± 0.06 min, which we identify as the orbital period, superhump period, and disc precession period, respectively. From the superhump and orbital periods we estimate the binary mass ratio q = M2/M1= 0.111 ± 0.005, though this method of mass ratio determination may not be well calibrated for helium-dominated binaries. This system is likely to be a bright foreground source of gravitational waves in the frequency range detectable by Laser Interferometer Space Antenna, and may be of use as a calibration source if future studies are able to constrain the masses of its stellar components.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: close - stars: dwarf novae - stars: individual: SDSS J135154.46-064309.0 - novae, cataclysmic variables - white dwarfs

CDS comments: CXOGBS J1751+2940, SDSSJ1240+0159 and SDSSJ1351+0643 are misprints for CXOGBS J1751-2940, SDSSJ1240-0159 and SDSSJ1351-0643 (wrong coordinates in Table A1, read "-" instead of "+").

Simbad objects: 35

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2021.05.08-10:45:52

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