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We analyze properties of the unique nova-like star AE Aquarii identified with a close binary system containing a red dwarf and a very fast rotating magnetized white dwarf. It cannot be assigned to any of the three commonly adopted…

High Energy Astrophysical Phenomena · Physics 2012-07-24 N. R. Ikhsanov , N. G. Beskrovnaya

We report on the Swift/XRT Deep Galactic Plane Survey discovery and multi-wavelength follow-up observations of a new intermediate polar Cataclysmic Variable, Swift J183920.1-045350. A 449.7 s spin period is found in Xmm-Newton and NuSTAR…

We present XMM-Newton X-ray spectra of the disc accreting cataclysmic variable OY Car, which were obtained during the performance verification phase of the mission. These data were taken 4 days after a short outburst. In the EPIC spectra we…

The X-ray source RX J2015.6+3711 was discovered by ROSAT in 1996 and recently proposed to be a cataclysmic variable (CV). Here we report on an XMM-Newton observation of RX J2015.6+3711 performed in 2014, where we detected a coherent X-ray…

High Energy Astrophysical Phenomena · Physics 2021-01-27 Francesco Coti Zelati , Nanda Rea , Sergio Campana , Domitilla De Martino , Alessandro Papitto , Samar Safi-Harb , Diego F. Torres

We analyzed a Kepler light curve of KIC 8751494, a recently recognized novalike cataclysmic variable in the Kepler field. We detected a stable periodicity of 0.114379(1) d, which we identified as being the binary's orbital period. The…

Solar and Stellar Astrophysics · Physics 2015-06-15 Taichi Kato , Hiroyuki Maehara

We present time-resolved photometry of a cataclysmic variable discovered in the Isaac Newton Telescope Photometric Halpha Survey of the northern galactic plane, IPHAS J062746.41+014811.3 and classify the system as the fourth deeply…

Solar and Stellar Astrophysics · Physics 2015-06-11 A. Aungwerojwit , B. T. Gänsicke , P. J. Wheatley , S. Pyrzas , B. Staels , T. Krajci , P. Rodríguez-Gil

In recent years, a number of planetary systems have been proposed to orbit evolved binary star systems. The presence of planets is invoked to explain observed variations in the timing of mutual eclipses between the primary and secondary…

Earth and Planetary Astrophysics · Physics 2015-06-16 Jonathan Horner , Robert A Wittenmyer , Tobias C Hinse , Jonathan P Marshall , Alex J Mustill , Chris G Tinney

Performing the photometric observations of the cataclysmic variable IPHAS J051814.33+294113.0, we discovered very deep eclipses. The observations were obtained over 14 nights, had a total duration of 56 hours and covered one year. The large…

Solar and Stellar Astrophysics · Physics 2018-06-13 V. P. Kozhevnikov

SW Sex stars are an informal sub-class of eclipsing nova-like cataclysmic variables. We report 934 new eclipse times measured over the past 17 years for HS 0728+6738 (V482 Cam), SW Sex, DW UMa, HS 0129+2933 (TT Tri), V1315 Aql, PX And, HS…

Solar and Stellar Astrophysics · Physics 2023-07-28 David Boyd

A cataclysmic variable is a binary system consisting of a white dwarf that accretes material from a secondary object via the Roche-lobe mechanism. In the case of long enough observation, a detailed temporal analysis can be performed,…

High Energy Astrophysical Phenomena · Physics 2015-05-13 A. A. Nucita , B. M. T. Maiolo , S. Carpano , G. Belanger , D. Coia , M. Guainazzi , F. de Paolis , G. Ingrosso

We have discovered a new high proper motion cataclysmic variable (CV) in the SUPERBLINK proper motion survey, which is sensitive to stars with proper motions greater than 40 mas/yr. This CV was selected for follow-up observations as part of…

Solar and Stellar Astrophysics · Physics 2015-06-22 Julie N. Skinner , John R. Thorstensen , Sébastien Lépine

We collected rich series of RV measurements covering last 110 years and photometric observations from the past 6 primary eclipses, complemented them by our new observations and derived a new precise ephemeris and an orbital solution of…

In the first part of this article, we review the observational evidence for spirals in the accretion discs of cataclysmic variables. It is shown that with the increasing amount of data available, spirals appear to be an omnipresent feature…

Astrophysics · Physics 2007-05-23 H. M. J. Boffin , D. Steeghs

We present our wide field Halpha+N[II] observations of 15 cataclysmic variables to search for remnant nova shells. Such shells have been found around other cataclysmic variables that were hitherto not known as novae. Our candidates were…

Solar and Stellar Astrophysics · Physics 2015-06-23 Linda Schmidtobreick , Michael Shara , Claus Tappert , Amelia Bayo , Alessandro Ederoclite

We have analyzed nearly eight years of MACHO optical photometry of the supersoft X-ray binary RX J0513.9-6951 and derived a revised orbital period and ephemeris. Previously published velocities are reinterpreted using the new ephemeris. We…

Astrophysics · Physics 2009-11-07 A. P. Cowley , P. C. Schmidtke , D. Crampton , J. B. Hutchings

We present results of CCD photometric study of the intermediate polars FO Aqr, EX Hya and RXS J180340.0+401214 = USNO-A2.0 1275-09738647 and corresponding corrected ephemerids.

Solar and Stellar Astrophysics · Physics 2013-01-01 Vitalii V. Breus , Ivan L. Andronov , Tibor Hegedus , Pavol A. Dubovsky , Igor Kudzej , Karol Petrik , Stanisław Zoła

We study the variability of the cataclysmic variable DO Dra, on time-scales of between minutes and decades. The characteristic decay time dt/dm=0.902(3) days/mag was estimated from our 3 nights of CCD R observations. The quiescent data show…

Astrophysics · Physics 2008-06-13 I. L. Andronov , L. L. Chinarova , W. Han , Y. Kim , J. -N. Yoon

Some results from a high speed photometric survey of faint southern Cataclysmic Variables are presented, including 7 new orbital periods.

Astrophysics · Physics 2007-05-23 Patrick A. Woudt , Brian Warner

We present a review of the results of long-term photometric monitoring of selected magnetic cataclysmic binary systems, which belong to a class named "Intermediate polars". We found a spin period variability in the V2306 Cygni system. We…

Solar and Stellar Astrophysics · Physics 2019-12-16 V. Breus , I. L. Andronov , P. Dubovsky , K. Petrik , S. Zola

This paper continues the series that identifies new cataclysmic variables found in the Sloan Digital Sky Survey. We present 36 cataclysmic variables and one possible symbiotic star from Sloan spectra obtained during 2002, of which 34 are…