Results 11 to 20 of about 2,487,342 (212)

Disc–magnetosphere interactions in cataclysmic variable stars [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractI review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are close to this transition.
Hellier, C
core   +4 more sources

Mass Determinations of Cataclysmic Variables [PDF]

open access: yes, 2013
Cataclysmic variables (CVs) are a class of closely interacting binary system that undergo mass transfer from a Roche lobe filling secondary star to a white dwarf primary star, usually via a gas stream and an accretion disc.
Savoury, C.D.J.
core   +6 more sources

Orbital periods of cataclysmic variables identified by the SDSS. VII, Four new eclipsing systems [PDF]

open access: yes, 2010
We present photometry of nine cataclysmic variable stars identified by the Sloan Digital Sky Survey, aimed at measuring the orbital periods of these systems. Four of these objects show deep eclipses, from which we measure their orbital periods. The light
Southworth, J.   +13 more
core   +1 more source

The component masses of the cataclysmic variable V347 Puppis [PDF]

open access: yes, 2005
We present time-resolved spectroscopy and photometry of the double-lined eclipsing cataclysmic variable V347 Pup (=LB 1800). There is evidence of irradiation on the inner hemisphere of the secondary star, which we correct for using a model to give a ...
Buckley, D. A. H.   +17 more
core   +1 more source

Imaging the Secondary Stars in Cataclysmic Variables [PDF]

open access: yes, 2001
The secondary, Roche-lobe filling stars in cataclysmic variables (CVs) are key to our understanding of the origin, evolution and behaviour of this class of interacting binary. We review the basic properties of the secondary stars in CVs and the observational and analysis methods required to detect them.
Dhillon, V.S., Watson, C.A.
openaire   +3 more sources

Galactic Model Parameters and Spatial Density of Cataclysmic Variables in the Gaia Era: New Constraints on Population Models

open access: yesThe Astronomical Journal, 2023
The spatial distribution, Galactic model parameters, and luminosity function of cataclysmic variables (CVs) are established using reestimated trigonometric parallaxes from Gaia DR3.
Remziye Canbay   +3 more
doaj   +1 more source

Indirect Imaging of Cataclysmic Variable Stars [PDF]

open access: yes, 2022
Kataklysmische veränderliche Sterne (CVs) sind kompakte Doppelsterne, die aus einem weißen Zwerg, einem späten Hauptreihenstern und einer Akkretionsstruktur bestehen. Die scheinbare Ausdehnung der Objekte ist wegen der großen Entfernung zu klein, um direkte räumlich aufgelöste Abbildungen aufzunehmen.
Kube, Jens   +4 more
openaire   +2 more sources

K-band spectroscopy of pre-cataclysmic variables [PDF]

open access: yes, 2007
Aims. There exists now substantial evidence for abundance anomalies in a number of cataclysmic variables (CVs), indicating that the photosphere of the secondary star incorporates thermonuclear processed material. However, the spectral energy distribution
Navarrete, F. P.   +9 more
core   +1 more source

THE EVOLUTION OF CATACLYSMIC VARIABLES AS REVEALED BY THEIR DONOR STARS [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2011
ABSTRACT We present an attempt to reconstruct the complete evolutionary path followed by cataclysmic variables (CVs), based on the observed mass–radius relationship of their donor stars. Along the way, we update the semi-empirical CV donor sequence presented previously by one of
Knigge, Christian   +2 more
openaire   +3 more sources

Evolution of Negative Superhumps, Quasiperiodic Oscillations, and Outbursts in the Z Cam-type Dwarf Nova AH Her

open access: yesThe Astrophysical Journal, 2023
AH Her is a Z Cam-type dwarf nova with an orbital period of ∼0.258 days. Dwarf nova oscillations and long-period dwarf nova oscillations have been detected, but no quasiperiodic oscillations (QPOs) and negative superhumps (NSHs) have been found.
Qi-Bin Sun, Sheng-Bang Qian, Min-Yu Li
doaj   +1 more source

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