SIMBAD references

2025MNRAS.537.3078A - Mon. Not. R. Astron. Soc., 537, 3078-3090 (2025/March-2)

Follow-up on three poorly studied AM CVn stars.

AUNGWEROJWIT A., GANSICKE B.T., BREEDT E., ARJYOTHA S., HERMES J.J., HAMBSCH F.-J., KUMAR A., RAMIREZ S.H., WILSON T.G., DHILLON V.S., MARSH T.R., POSHYACHINDA S., SCARINGI S., HAISLIP J.B. and REICHART D.E.

Abstract (from CDS):

We report follow-up observations of three poorly studied AM CVn-type binaries: CRTS CSS150211 J091017-200813, NSV 1440, and SDSS J183131.63+420220.2. Analysing time-series photometry obtained with a range of ground-based facilities as well as with the Transiting Exoplanet Survey Satellite (TESS), we determine the superhump period of CRTS J0910-2008 as $\rm{P_{sh}}=29.700\pm 0.004$ min and the orbital period of NSV 1440 as $\rm{P_{orb}}=36.56\pm 0.03$ min. We also confirm a photometric period of $P=23.026\pm 0.097$ min in SDSS J1831+4202, which is most likely the superhump period. We also report the first optical spectroscopy of CRTS J0910-2008 and NSV 1440 which unambiguously confirms both as AM CVn systems. We briefly discuss the distribution in the Hertzsprung-Russell diagram of the currently known sample of 63 AM CVn stars with known periods and Gaia data.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): binaries: close - stars: dwarf novae - stars: individual: CRTS J091017.43-200812.3, NSV 1440, SDSS J183131.63+420220.2 - novae, cataclysmic variables

Simbad objects: 7

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