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I review our current understanding of the evolution of cataclysmic variables (CVs). I first provide a brief introductory "CV primer", in which I describe the physical structure of CVs, as well as their astrophysical significance. The main…

Solar and Stellar Astrophysics · Physics 2011-09-05 Christian Knigge

We present results of a search for objects with H-alpha excess, such as cataclysmic variables (CVs) and chromospherically active binaries (ABs), as counterparts to X-ray sources detected with Chandra satellite observatory in six Galactic…

Astrophysics of Galaxies · Physics 2009-10-08 Pawel Pietrukowicz

Continuing our efforts to select possible classical nova candidates among Far Eastern guest stars and to identify them with modern cataclysmic variables (CVs), we present a search for counterparts in 24 promising areas of the sky…

Solar and Stellar Astrophysics · Physics 2020-05-20 Susanne M Hoffmann , Nikolaus Vogt

Because accretion-generated luminosity dominates the radiated energy of most cataclysmic variables, they have been ``traditionally'' observed primarily at short wavelengths. Infrared observations of cataclysmic variables contribute to the…

Astrophysics · Physics 2009-11-07 D. W. Hoard , S. Wachter , L. Lee Clark , Timothy P. Bowers

An overview is given of the properties of the various kinds of quasi-periodic luminosity modulations observed in cataclysmic variables (CVs). The two principal types, known in the CV literature as dwarf nova oscillations and quasi-periodic…

Astrophysics · Physics 2010-12-13 Brian Warner , Patrick A. Woudt

The high luminosity of massive, early-type stars drives strong stellar winds through line scattering of the stars continuum radiation. Their momenta contribute substantially to the dynamics and energetics of the ambient interstellar medium…

Solar and Stellar Astrophysics · Physics 2024-06-24 Bharti Arora , Michael De Becker , Jeewan C. Pandey

As a class of compact binaries with large binding energy, cataclysmic variables formed through close encounters play an important role in the dynamical evolution of globular clusters. As part of a systematic search for CVs undergoing dwarf…

High Energy Astrophysical Phenomena · Physics 2015-05-28 A. P. Hourihane , P. J. Callanan , A. M. Cool , M. T. Reynolds

Cataclysmic variables (CVs) are the most numerous population among the Galactic objects emitting in hard X-rays. Most probably, they are responsible for the extended hard X-ray emission of the Galactic ridge and the central Galactic…

High Energy Astrophysical Phenomena · Physics 2022-02-23 Valery F. Suleimanov , Victor Doroshenko , Klaus Werner

I present a brief review of the present status of X-ray emission from Magnetic Cataclysmic Variables (MCVs). A short introduction to the types of Cataclysmic Variables (CVs) is followed by a presentation of some of the properties of the two…

High Energy Astrophysical Phenomena · Physics 2013-10-03 K. P. Singh

Stars exhibit a bewildering variety of rapidly variable behaviors ranging from explosive magnetic flares to stochastically changing accretion to periodic pulsations or rotation. The principal Rubin Observatory Legacy Survey of Space and…

Solar and Stellar Astrophysics · Physics 2023-08-02 Eric D. Feigelson , Federica B. Bianco , Rosaria Bonito

As a result of applying the original optical variability search method on publicly available data, we have found eight new cataclysmic variables and two possible Optically Violent Variable quasars among the previously unidentified X-ray…

Solar and Stellar Astrophysics · Physics 2015-05-19 D. V. Denisenko , K. V. Sokolovsky

A common remark at conferences and meetings has been: "One can fit any light curve with binary lens models because of the large number of parameters!" It is especially tempting to claim that some of the possible binary events in the…

Astrophysics · Physics 2009-10-28 Ann B. Saust

We present moderate resolution (R > 1,800) infrared K-band spectra of twelve long-period (Porb > 6 hr) cataclysmic variables. We detect absorption lines from the photospheres of the secondary stars in every system, even though two of the m…

Astrophysics · Physics 2009-11-10 Thomas E. Harrison , Heather L. Osborne , Steve B. Howell

Based on the current detectable cataclysmic variable (CV) population in Galactic globular clusters (GCs), we show that there is not a clear relation between the number of sources per unit of mass and the stellar encounter rate, the cluster…

Solar and Stellar Astrophysics · Physics 2024-04-08 Liliana Rivera Sandoval , Diogo Belloni , Miriam Ramos Arevalo

The unparalleled photometric data obtained by NASA's Kepler Space Telescope has led to an improved understanding of stellar structure and evolution - in particular for solar-like oscillators in this context. Binary stars are fascinating…

We present an overview of pulsating stars in close binaries, focusing on the question what role the dupliticity plays in triggering and/or modifying stellar oscillations and on how it can help us to interpret the oscillatory behaviour of…

Astrophysics · Physics 2007-05-23 Conny Aerts , Petr Harmanec

Cepheids provide approaches to determining binary parameters which are often complementary to those for main sequence massive and intermediate mass stars. Specifically, we are using high resolution imaging, radial velocities, and X-ray…

Solar and Stellar Astrophysics · Physics 2014-01-22 Nancy Remage Evans

We present spectroscopy of four cataclysmic variables. Using radial velocity measurements, we find orbital periods for the first time. The stars and their periods are GY Hya, 0.347230(9) d; SDSS J204448-045929, 1.68(1) d; V392 Hya,…

Astrophysics · Physics 2009-11-11 Christopher S. Peters , John R. Thorstensen

Astronomical polarimetry is a powerful technique that can provide physical information sometimes difficult or impossible to obtain by any other type of observation. Almost every class of binary star can benefit from polarimetric…

Astrophysics · Physics 2007-05-23 N. Manset

The population of compact binaries in dense stellar systems is affected strongly by frequent dynamical interactions between stars and their interplay with the stellar evolution. In this contribution, we consider these effects on binaries…

Astrophysics · Physics 2007-05-23 N. Ivanova , F. A. Rasio
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