Results 41 to 50 of about 3,407,558 (216)

Accretion in Cataclysmic Variable Stars [PDF]

open access: yes, 2005
We consider accretion onto the white dwarfs in cataclysmic variables in relation to nova eruptions, dwarf nova outbursts, hibernation and non-radial oscillations.
Warner, Brian, Woudt, Patrick A.
openaire   +2 more sources

The hybrid Nova Vul 2024 (=V615 Vul)

open access: yesAstronomy & Astrophysics
Context. Among galactic novae, many remain poorly characterized due to heterogeneous data, observational challenges, or heavy reddening along the Galactic plane.
Valisa P., Munari U., Albanese I.
doaj   +1 more source

Ultraviolet observations of cataclysmic variables [PDF]

open access: yesAdvances in Space Research, 1987
AbstractThe preliminary results of the analysis of more than 1000 spectra of cataclysmic variables in the archive of the International Ultraviolet Explorer were presented at the meeting. To characterize the slope of the spectra I use F = log(f1460Å/f2880Å). For most spectra F lies between 0.2 and 0.7.
openaire   +1 more source

The boundary layer in cataclysmic variables [PDF]

open access: yesAstrophysics and Space Science, 1987
AbstractRecent development in the theory of the boundary layer is considered. The model for the formation of a corona above the WD is discussed in some detail.The interaction of the boundary layer with the stellar interior and possible mixing between the hydrogen-rich accreted matter and the core material is discussed in view of recent numerical ...
openaire   +1 more source

The donor stars of cataclysmic variables [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2006
Abstract We carefully consider observational and theoretical constraints on the global properties of secondary stars in cataclysmic variable stars (CVs). We then use these constraints to construct and test a complete, semi-empirical donor sequence for CVs with orbital periods Porb≤ 6 h.
openaire   +3 more sources

Rotation and Cataclysmic Variables [PDF]

open access: yesSymposium - International Astronomical Union, 2004
Cataclysmic Variables are binary star systems and so are closely connected to the subject of this meeting. The stars revolve around the center of mass of the system. The gas lost by the secondary through the inner Lagrangian point enters the Roche lobe of the white dwarf with the angular momentum of the L1point and, therefore, forms an accretion disk ...
Sumner Starrfield   +2 more
openaire   +1 more source

1RXS J173021.5-055933 : a cataclysmic variable with a fast-spinning magnetic white dwarf [PDF]

open access: yes, 2008
Aims. We present the first X-ray observations with the XMM-Newton and INTEGRAL satellites of the recently discovered cataclysmic variable 1RXS J173021.5-055933, together with simultaneous UV and coordinated optical photometry aiming at characterising its
Matt, Giorgio   +42 more
core   +1 more source

MAGNETIC CATACLYSMIC VARIABLES: 25 YEARS OF EXCITING PERFOMANCE

open access: yesOdessa Astronomical Publications, 2017
Exactly 25 years ago, Santiago Tapia has detected circular and linear polarization of AM Her varying with the same period as the photometric and spectral characteristics. This had lead to a discovery of unprecedentedly exotic binary systems, in which the
I. L Andronov
doaj   +1 more source

Time-resolved photometry and spectroscopy of the new deeply-eclipsing SW Sextantis star HS 0728+6738 [PDF]

open access: yes, 2004
We present time-resolved optical spectroscopy and photometry, and far-ultraviolet spectroscopy of HS 0728+6738, a cataclysmic variable discovered in the Hamburg Quasar Survey.
Rodríguez-Gil, P.   +9 more
core   +1 more source

Brown dwarfs in retrogradely precessing cataclysmic variables?

open access: yesEPJ Web of Conferences, 2011
We compare Smoothed Particle Hydrodynamic simulations of retrogradely precessing accretion disks that have a white dwarf primary and a main sequence secondary with observational data and with theory on retrograde precession via tidal torques like those ...
Martin E.L.   +2 more
doaj   +1 more source

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