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Related papers: Cataclysmic Variables observed during K2 Campaigns…

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We report K2 observations of the eclipsing cataclysmic variable V729 Sgr which covered nearly 80 days in duration. We find five short outbursts and two long outbursts, one of which shows a clear plateau phase in the rise to maximum…

Solar and Stellar Astrophysics · Physics 2017-05-31 Gavin Ramsay , Matt A. Wood , John Cannizzo , Steve Howell , Alan Smale

We used the light curve code XRBinary to model the quiescent K2 light curves of three low-inclination cataclysmic variables (CVs): 1RXS\,J0632+2536 (J0632+2536), RZ\,Leo, TW\,Vir and the pre-CV WD\,1144+011. Optimized light curve models…

We report the discovery and characterization of a new cataclysmic variable (CV), 2CXO J050740.7-091337 (hereafter 2CXO J0507), identified using the X-ray main sequence through a cross-match between the Chandra Source Catalogue 2.1 and Gaia…

High Energy Astrophysical Phenomena · Physics 2026-05-07 Ilkham Galiullin , Vladislav Dodon , Antonio C. Rodriguez , Paula Szkody , Askar Sibgatullin

We present spectroscopy and orbital periods Porb for 30 apparently non-magnetic cataclysmic binaries with periods below about 3 hours, nearly all of which are dwarf novae, mostly of the SU Ursae Majoris subclass. We then turn to the…

Solar and Stellar Astrophysics · Physics 2020-06-17 John R. Thorstensen

The first results of a photometric survey of faint Cataclysmic Variables are presented. V359 Cen is an SU UMa star with a period of 112 min. Even though observed at quiescence, the mass transfer rate in this old nova may be sufficiently…

Astrophysics · Physics 2009-11-06 Patrick A. Woudt , Brian Warner

I report on the discovery of two cataclysmic variables in the same field in Lyra originally identified from their magnitudes in USNO-B1.0 catalogue and Palomar images. The historical light curves were analyzed on 300+ photographic plates…

Solar and Stellar Astrophysics · Physics 2011-07-20 D. V. Denisenko

We have observed 8 faint cataclysmic variable stars photometrically. The nova-like Car2 was extensively sampled but showed little variability. V1040 Cen was observed near the end of a dwarf nova outburst and possessed dwarf nova and…

Solar and Stellar Astrophysics · Physics 2015-05-14 Patrick A. Woudt , Brian Warner

We present time-series photometry of nine cataclysmic variables: EI UMa, V844Her, V751 Cyg, V516 Cyg, GZ Cnc, TY Psc, V1315 Aql, ASAS J002511+1217.12, V1315 Aql and LN UMa. The observations were conducted at various observatories, covering…

Astrophysics · Physics 2008-06-10 C. Papadaki , H. M. J. Boffin , V. Stanishev , P. Boumis , S. Akras , C. Sterken

We obtained time-series radial velocity spectroscopy of twenty cataclysmic variable stars, with the aim of determining orbital periods P_orb. All of the stars reported here prove to have P_orb > 3.5 h. For sixteen of the stars, these are…

Solar and Stellar Astrophysics · Physics 2015-05-19 John R. Thorstensen , Christopher S. Peters , Julie N. Skinner

We describe two observations of the nova-like cataclysmic variable AC Cnc obtained with {\it Kepler} during its revamped second mission ({\it K2}). Using the {\it K2} 1-minute cadence mode, the data were obtained during Campaigns 5 and 18.…

Solar and Stellar Astrophysics · Physics 2019-05-29 Eric M. Schlegel , R. Kent Honeycutt

The first full year of operation following the commissioning year of the Sloan Digital Sky Survey has revealed a wide variety of newly discovered cataclysmic variables. We show the SDSS spectra of forty-two cataclysmic variables observed in…

Continuing our work from Paper I (Southworth et al., 2006) we present medium-resolution spectroscopy and broad-band photometry of seven cataclysmic variables (CVs) discovered by the SDSS. For six of these objects we derive accurate orbital…

We revealed that the dwarf nova 1RXS J232953.9+062814 is an SU UMa-type system with a superhump period of 66.774+/-0.010 min. The short period strongly indicates that the orbital period of this object is below the period minimum of…

Astrophysics · Physics 2015-06-24 M. Uemura , T. Kato , R. Ishioka , the VSNET collaboration team

We report follow-up observations of five cataclysmic variable candidates from LAMOST published by Hou et al. (2020). LAMOST J024048.51+195226.9 is the most unusual of the five; an early-M type secondary star contributes strongly to its…

Solar and Stellar Astrophysics · Physics 2020-09-09 John R. Thorstensen

Strong selection effects are present in observational samples of cataclysmic variables (CVs), complicating comparisons to theoretical predictions. The selection criteria used to define most CV samples discriminate heavily against the…

Astrophysics · Physics 2009-11-13 Magaretha L. Pretorius , Christian Knigge

We present spectroscopy of seven cataclysmic variable stars with orbital periods P(orb) greater than 5 hours, all but one of which are known to be dwarf novae. Using radial velocity measurements we improve on previous orbital period…

Astrophysics · Physics 2016-08-30 John R. Thorstensen , William H. Fenton , Cynthia J. Taylor

We report on extensive photometry of the dwarf nova SS Ursae Minoris throughout nine months of 2004. In total, we recorded two superoutbursts and 11 normal outbursts of the star. SS UMi has been known to show frequent superoutbursts with a…

Astrophysics · Physics 2009-11-11 A. Olech , K. Mularczyk , P. Kedzierski , K. Zloczewski , M. Wisniewski , K. Szaruga

During a visual search through the Kepler main-field lightcurves, we have discovered a cataclysmic variable (CV) that experienced only a single 4-day long outburst over four years, rising to three times the quiescent flux. During the four…

Nova-like variables are high-accretion-rate cataclysmic variables (CVs) that, in contrast to dwarf novae, do not undergo outbursts caused by thermal-viscous instability. However, a small group of nova-likes, classified as AH Pic-type stars,…

Solar and Stellar Astrophysics · Physics 2026-05-12 Xin Li , Yongkang Sun

Cataclysmic variables (CVs) exhibit a plethora of variable phenomena many of which require long, uninterrupted light curves to reveal themselves in detail. The month long datasets provided by TESS are well suited for this purpose. TESS has…

Solar and Stellar Astrophysics · Physics 2022-07-19 Albert Bruch