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Related papers: The Evolution of Cataclysmic Variables

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A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF…

The eruption of a (classical) nova is widely accepted to be a recurrent event in the lifetime of a cataclysmic binary star. In-between eruptions the system should therefore behave as a "normal" cataclysmic variable (CV), i.e. according to…

Solar and Stellar Astrophysics · Physics 2012-11-08 C. Tappert , L. Schmidtobreick , A. Ederoclite , N. Vogt

Using available astrometric and radial velocity data, the space velocities of cataclysmic variables (CVs) with respect to Sun were computed and kinematical properties of various sub-groups of CVs were investigated. Although observational…

Astrophysics of Galaxies · Physics 2014-11-20 T. Ak , S. Bilir , S. Ak , K. B. Coskunoglu , Z. Eker

The discrepancies between observations and theoretical predictions of cataclysmic variables (CVs) suggest that there exists unknown angular momentum loss mechanism(s) besides magnetic braking and gravitational radiation. Mass loss due to…

High Energy Astrophysical Phenomena · Physics 2024-10-22 Wen-Shi Tang , Xiang-dong Li , Zhe Cui

We report the results of a statistical study of cyclical period changes in cataclysmic variables (CVs). Assuming the third-body hypothesis as the cause of period changes, we estimate the third-body mass, $m_3$, and its separation from the…

Solar and Stellar Astrophysics · Physics 2024-08-16 Leandro Souza , Raymundo Baptista

Mass transfer in cataclysmic variables (CVs) is usually considered to be caused by angular momentum loss (AML) driven by magnetic braking and gravitational radiation (GR) above the period gap, and solely by GR below the period gap. The…

Solar and Stellar Astrophysics · Physics 2015-05-30 Yong Shao , Xiang-Dong Li

The standard picture of CV secular evolution predicts a spike in the CV distribution near the observed short-period cutoff P_0 ~ 78 min, which is not observed. We show that an intrinsic spread in minimum (`bounce') periods P_b resulting…

Astrophysics · Physics 2009-11-07 A. R. King , K. Schenker , J. M. Hameury

Cataclysmic Variables (CVs) are interacting binaries consisting of at least three components that control their colour and magnitude. Using Gaia we here investigate the influence of the physical properties of these binaries on their…

Solar and Stellar Astrophysics · Physics 2019-12-04 Javier Abril , Linda Schmidtobreick , Alessandro Ederoclite , Carlos López-Sanjuan

Outflows in the form of fast winds from the accretion disk appear in nearly all high accretion rate cataclysmic variables (CVs), both novalikes (NLs) and dwarf novae in outburst (DN). The primary signatures of CV winds are broad,…

Astrophysics · Physics 2007-05-23 C. S. Froning

We resume the discussion about irradiation-driven mass transfer cycles in semi- detached compact binary systems. The analytical model that describes the onset of these cycles, which occur on a thermal timescale of the donor star, is…

Astrophysics · Physics 2009-11-10 A. Büning , H. Ritter

Understanding the long-time dynamics of complex physical processes depends on our ability to recognize patterns. To simplify the description of these processes, we often introduce a set of reaction coordinates, customarily referred to as…

Chemical Physics · Physics 2024-12-31 Tuğçe Gökdemir , Jakub Rydzewski

Context. AM CVn binaries are potential progenitors of thermonuclear supernovae and strong sources of persistent gravitational wave radiation. For a long time, it has been believed that these systems cannot descend from cataclysmic variables…

Solar and Stellar Astrophysics · Physics 2023-10-04 Diogo Belloni , Matthias R. Schreiber

We investigate if consequential angular momentum losses (CAML) or an intrinsic deformation of the donor star in CVs could increase the CV bounce period from the canonical theoretical value ~65 min to the observed value $P_{min} \approx77$…

Astrophysics · Physics 2009-11-07 J. Barker , U. C. Kolb

Cataclysmic variables are binary stars in which a relatively normal star is transferring mass to its compact companion. This interaction gives rise to a rich range of behaviour, of which the most noticeable are the outbursts that give the…

Astrophysics · Physics 2007-05-23 Robert Connon Smith

Cataclysmic Variables (CVs) are semi-detached binaries composed of a white dwarf orbiting a lower-mass K or M star. We investigate whether CVs are responsible for a new intriguing feature (the `hook') that appears in the Gaia DR3…

Solar and Stellar Astrophysics · Physics 2024-01-23 Guillaume Dubus , Carine Babusiaux

We present the first volume-limited sample of cataclysmic variables (CVs), selected using the accurate parallaxes provided by the second data release (DR2) of the ESA $\mathit{Gaia}$ space mission. The sample is composed of 42 CVs within…

(Abridged) We present high-speed, three-colour photometry of seven short period (Porb <= 95 mins) eclipsing CVs from the Sloan Digital Sky Survey. We determine the system parameters via a parametrized model of the eclipse fitted to the…

We investigate why the spectral type of most cataclysmic variable (CV) secondaries is significantly later than that of a ZAMS star with the same mean density. Using improved stellar input physics, tested against observations of low-mass…

Astrophysics · Physics 2015-06-24 I. Baraffe , U. Kolb

We have used a model of magnetic accretion to investigate the rotational equilibria of magnetic cataclysmic variables (mCVs). This has enabled us to derive a set of equilibrium spin periods as a function of orbital period and magnetic…

Astrophysics · Physics 2007-05-23 A. J. Norton , R. V. Somerscales , G. A. Wynn

We answer the long-standing question of which production mechanism is responsible for the cataclysmic variables (CVs) in globular clusters. Arguments have been given that range from mostly primordial presence to a significant contribution…

Astrophysics · Physics 2009-11-11 David Pooley , Piet Hut