Results 31 to 40 of about 652 (185)

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

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

NOVA-LIKE CATACLYSMIC VARIABLES IN THE INFRARED [PDF]

open access: yesThe Astrophysical Journal, 2014
68 pages (preprint format) including 14 figures, 6 tables; to appear in The Astrophysical ...
D. W. Hoard   +13 more
openaire   +3 more sources

Rapid oscillations in cataclysmic variables [PDF]

open access: yesAstrophysics and Space Science, 1986
I give an overview of the rich phenomenology of dwarf nova oscillations (DNOs) and Quasi-periodic Oscillations (QPOs) observed in cataclysmic variable stars (CVs). The favoured interpretation of these rapid brightness modulations (3 - >1000 s time scales) is that they are magnetic in nature - magnetically channelled accretion from the inner ...
openaire   +3 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

Automatic Search of Cataclysmic Variables Based on LightGBM in LAMOST-DR7

open access: yesUniverse, 2021
The search for special and rare celestial objects has always played an important role in astronomy. Cataclysmic Variables (CVs) are special and rare binary systems with accretion disks.
Zhiyuan Hu   +3 more
doaj   +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

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

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