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Related papers: Classical novae vs cataclysmic variables

200 papers

Recent spectroscopic observations have identified several cataclysmic variables non-solar metal abundances. We present theoretical models which examine the level of core evolution expected for CV secondaries prior to contact. Our results…

Astrophysics · Physics 2015-06-24 Steve B. Howell

We have known for a long time that many of the measured white dwarf (WD) masses in cataclysmic variables (CVs) significantly exceed the mean mass of single WDs. This was thought to be related to observational biases, but recent…

Solar and Stellar Astrophysics · Physics 2011-08-24 M. Zorotovic , M. R. Schreiber , B. T. Gänsicke

We present simulations of dwarf nova outbursts taking into account realistic variations of the mass loss rate from the secondary. The mass transfer variation has been derived from 20 years of visual monitoring and from X-ray observations…

Astrophysics · Physics 2007-05-23 M. R. Schreiber , B. T. Gaensicke , F. V. Hessman

Cataclysmic variables undergo periodic nova explosions during which a finite mass of material is expelled on a short timescale. The system widens and, as a result, the mass-transfer rate drops. This state of hibernation may account for the…

Astrophysics · Physics 2008-11-26 Rebecca G. Martin , Christopher A. Tout

The population of non magnetic cataclysmic variables evolving under the influence of a circumbinary disk is investigated for systems above the upper edge of the period gap at orbital periods greater than 2.75hr. For a fractional mass input…

Astrophysics · Physics 2008-11-26 B. Willems , R. Taam , U. Kolb , G. Dubus , E. Sandquist

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

The impact of nova eruptions on the long-term evolution of Cataclysmic Variables(CVs) is one of the least understood and intensively discussed topics in the field. Acrucial ingredient to improve with this would be to establish a large…

Solar and Stellar Astrophysics · Physics 2020-11-18 I. Fuentes-Morales , C. Tappert , M. Zorotovic , N. Vogt , E. C. Puebla , M. R. Schreiber , A. Ederoclite , L. Schmidtobreick

I review what we know about the donor stars in cataclysmic variables (CVs), focusing particularly on the close link between these binary components and the overall secular evolution of CVs. I begin with a brief overview of the "standard…

Solar and Stellar Astrophysics · Physics 2015-03-17 Christian Knigge

This article summarizes the basic facts and ideas concerning the formation and evolution of cataclysmic variables (CVs). It is shown why the formation of CVs must involve huge losses of mass and orbital angular momentum, very likely via a…

Astrophysics · Physics 2008-09-11 H. Ritter

Archival data on permanent superhump systems are compiled to test the thermal stability of their accretion discs. We find that their discs are almost certainly thermally stable as expected. This result confirms Osaki's suggestion (1996)…

Astrophysics · Physics 2009-10-31 A. Retter , T. Naylor

We critically examine the basic paradigm for the origin of the 2-3 hr period gap in cataclysmic variables (CVs). We carry out an extensive population synthesis study of CVs starting from ~ 3 x 10^6 primordial binaries, and evolving some ~ 2…

Astrophysics · Physics 2011-05-05 Steve B. Howell , Lorne A. Nelson , Saul Rappaport

A substantial fraction of Cataclysmic Variables (CVs) reveals non-solar abundances. A comprehensive list of CVs which includes those that have been examined for these abundances is given. Three possible sources of these non-solar abundances…

Solar and Stellar Astrophysics · Physics 2021-06-23 Warren M. Sparks , Edward M. Sion

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 explore the observational appearance of the merger of a low-mass star with a white dwarf (WD) binary companion. We are motivated by Schreiber et al. (2016), who found that multiple tensions between the observed properties of cataclysmic…

Solar and Stellar Astrophysics · Physics 2021-12-22 Brian D. Metzger , Yossef Zenati , Laura Chomiuk , Ken J. Shen , Jay Strader

Using the latest compilation of cataclysmic variable orbital periods by Ritter & Kolb we argue against Verbunt's conclusion that the period gap is not significant for nova-like variables. We also discuss the relation of the VY Scl stars to…

Astrophysics · Physics 2009-10-30 Coel Hellier , T. Naylor

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

The unprecedented sky coverage and observing cadence of the All-Sky Automated Survey for SuperNovae (ASAS-SN) has resulted in the discovery and continued monitoring of a large sample of Galactic transients. The vast majority of these are…

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

The observed properties of novae before and after eruption are discussed. The distribution of orbital periods of novae shows a concentration near 3.2 h, which resembles that of magnetic cataclysmic variables, and there is some evidence that…

Astrophysics · Physics 2009-11-07 Brian Warner

Context: Classical nova progenitors are cataclysmic variables and very old novae are observed to match high mass transfer rate and (relatively) long orbital period systems. However, the aftermath of a classical nova has never been studied…

Solar and Stellar Astrophysics · Physics 2021-05-12 Elena Mason , Steven N. Shore , Jeremy Drake , Steve B. Howell , Paul Kuin , Enza Magaudda