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In this study, the distances of stellar systems classified as cataclysmic variables in the literature were determined by using the distance compiled from Bailer-Jones et al. (2021). The spatial distributions of cataclysmic variables in the…

Astrophysics of Galaxies · Physics 2025-02-14 R. Canbay

Cataclysmic variables are among the photometrically most unstable stars in the zoo of stellar objects, exhibiting light variations on all time-scales between millennia and seconds. The literature is full of reports on variable phenomena…

Solar and Stellar Astrophysics · Physics 2020-02-17 Albert Bruch

We present a binary evolution study of cataclysmic variables (CVs) and related systems with white dwarf accretors, including for example, AM CVn systems, classical novae, supersoft X-ray sources, and systems with giant donor stars. Our…

Solar and Stellar Astrophysics · Physics 2016-12-14 B. Kalomeni , L. Nelson , S. Rappaport , M. Molnar , J. Quintin , K. Yakut

We present optical spectroscopy of nine cataclysmic binary stars, mostly dwarf novae, obtained primarily to determine orbital periods Porb. The stars and their periods are LX And, 0.1509743(5) d; CZ Aql, 0.2005(6) d; LU Cam, 0.1499686(4) d;…

Astrophysics · Physics 2009-11-13 H. A. Sheets , J. R. Thorstensen , C. J. Peters , A. B. Kapusta , C. J. Taylor

The spectroscopic class of subdwarf A-type (sdA) stars has come into focus in recent years because of their possible link to extremely low-mass white dwarfs, a rare class of objects resulting from binary evolution. Although most sdA stars…

Solar and Stellar Astrophysics · Physics 2021-12-29 G. Mösenlechner , E. Paunzen , I. Pelisoli , J. Seelig , S. Stidl , H. M. Maitzen

We consider accretion onto the white dwarfs in cataclysmic variables in relation to nova eruptions, dwarf nova outbursts, hibernation and non-radial oscillations.

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

The 2dF QSO survey is a spectroscopic survey of 48,000 point-sources selected by colour with magnitudes in the range 18.35 < B < 20.95. Amongst QSOs, white dwarfs, narrow-line galaxies and other objects are some cataclysmic variables (CVs).…

We analyze the orbital period distribution of post-common-envelope white-dwarf-main-sequence (WDMS) binaries by cross-matching the new spectroscopic Gaia DR3 WDMS catalog with TESS light curves, and applying a uniform periodicity search and…

Solar and Stellar Astrophysics · Physics 2025-10-22 Yarin Meir Shani , Na'ama Hallakoun , Sagi Ben-Ami , Sahar Shahaf , Jiadong Li , Hans-Walter Rix , Silvia Toonen

The majority of stars both host planetary systems and evolve into a white dwarf (WD). To understand their post-main-sequence (PMS) planetary system evolution, we present a search for transiting/eclipsing planets and other Substellar Bodies…

Earth and Planetary Astrophysics · Physics 2017-12-27 Lennart van Sluijs , Vincent Van Eylen

We give an updated version of the analytical equation of state used in the Cambridge stellar evolution code (STARS) as a free to use open-source package that we have used to model cool white dwarfs down to temperatures…

Solar and Stellar Astrophysics · Physics 2022-04-29 Arnab Sarkar , Christopher A. Tout

EX Dra is a long-period eclipsing dwarf nova with $\sim2-3$ mag amplitude outbursts. This star has been monitored photometrically from November, 2009 to March, 2016 and 29 new mid-eclipse times were obtained. By using new data together with…

Astrophysics of Galaxies · Physics 2017-06-28 Zhong-tao Han , Sheng-bang Qian , Irina Voloshina , Li-Ying Zhu

Anomalous Cepheids are a rather rare family of pulsating variables preferably found in dwarf galaxies. Attempts to model these variable stars via single-star evolution scenarios still leave space for improvements to better grasp their…

Solar and Stellar Astrophysics · Physics 2017-05-31 Alfred Gautschy , Hideyuki Saio

Using improved, up-to-date stellar input physics tested against observations of low-mass stars and brown dwarfs we calculate the secular evolution of low-mass donor CVs, including those which form with a brown dwarf donor star. Our models…

Astrophysics · Physics 2007-05-23 Ulrich Kolb , Isabelle Baraffe

We present the results of our study of ASASSN-14dx, a previously known but poorly characterised cataclysmic variable (CV). The source was observed as part of an ongoing high-time-resolution photometric survey of CVs, which revealed that, in…

Observational arguments supporting the binary explanation of the long secondary periods (LSP) phenomenon in red giants are presented. Photometry of about 1200 semiregular variables with the LSP in the Large Magellanic Cloud are analyzed…

Astrophysics · Physics 2011-02-11 I. Soszynski

We report time-series photometry of the quiescent optical counterpart of the EUV transient RE J1255+266. The star appears as a DA white dwarf with bright emission lines and a complex spectrum of periodic signals in its light curve. A signal…

Astrophysics · Physics 2009-11-10 Joseph Patterson , John Thorstensen , Jonathan Kemp

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 report the discovery of two new magnetic cataclysmic variables with brown dwarf companions and long orbital periods ($P_{\rm orb}=95\pm1$ and $104\pm2$ min). This discovery increases the sample of candidate magnetic period bouncers with…

Understanding and quantifying the contribution of known classes of transient and variable sources is an important lesson to be learned from the manifold of pre-cursors programs of the near-future large synoptic sky survey programs like…

The magnetic cataclysmic variable AE Aquarii hosts a rapidly rotating white dwarf which is thought to expel most of the material streaming onto it. Observations of AE Aqr have been obtained in the wavelength range of 5 - 70 microns with the…

Astrophysics · Physics 2011-02-11 G. Dubus , R. E. Taam , C. Hull , D. M. Watson , J. C. Mauerhan
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