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Publications of the Astronomical Society of the Pacific, 1996
Outburst mechanisms of dwarf novae are discussed. There is a rich variety in outburst behaviors of non-magnetic cataclysmic variable stars, starting from non-outbursting nova-like stars to various sub-classes of dwarf novae (i.e., U Gem-type, Z Cam-type, and SU UMa-type).
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Outburst mechanisms of dwarf novae are discussed. There is a rich variety in outburst behaviors of non-magnetic cataclysmic variable stars, starting from non-outbursting nova-like stars to various sub-classes of dwarf novae (i.e., U Gem-type, Z Cam-type, and SU UMa-type).
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An ancient nova shell around the dwarf nova Z Camelopardalis
Nature, 2007Cataclysmic variables (classical novae and dwarf novae) are binary star systems in which a red dwarf transfers hydrogen-rich matter, by way of an accretion disk, to its white dwarf companion. In dwarf novae, an instability is believed to episodically dump much of the accretion disk onto the white dwarf.
Shara, Michael M. +15 more
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Publications of the Astronomical Society of the Pacific, 2000
We have carried out a synthetic spectral analysis of five IUE NEWSIPS archival spectra of the peculiar, very active dwarf nova CN Orionis taken at the system's lowest flux levels during quiescence. AAVSO data indicate the visual magnitude V ~ 14 for CN Ori at this time.
J. Urban +5 more
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We have carried out a synthetic spectral analysis of five IUE NEWSIPS archival spectra of the peculiar, very active dwarf nova CN Orionis taken at the system's lowest flux levels during quiescence. AAVSO data indicate the visual magnitude V ~ 14 for CN Ori at this time.
J. Urban +5 more
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Exposed white dwarfs in dwarf novae
2008Hubble Space Telescope far ultraviolet spectroscopic observations of cataclysmic variable white dwarfs, exposed during dwarf nova quiescence, have yielded a number of new insights on accretional heating, photospheric abundances of the accreted atmosphere and rotational velocities of the underlying degenerates.
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Nova and Dwarf Nova Observations with MAGIC
2016Starting in fall 2012, the MAGIC collaboration conducted a nova follow-up program in order to detect a possible VHE gamma-ray component. The program responded to Fermi-LAT detections of different types of novae at GeV energies: it initially focussed on symbiotic novae and later extended to bright Classical Novae and additional outbursts from other ...
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Spectroscopic Observations of Dwarf Novae
International Astronomical Union Colloquium, 1979Abstract.Dwarf novae spectroscopic work is briefly reviewed and the radiation emitted by the components of the system is discussed. The reasons why the broad, shallow absorption lines arise in the disc, and not in the white dwarf, are assembled.
J.A.J. Whelan, M.W. Rayne, C.C. Brunt
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Systematics of superoutbursts in dwarf novae
Astrophysics and Space Science, 1995Photometric properties of known and suspected members of the SU UMa subclass of dwarf novae are tabulated and discussed. The precessing disc model of superoutbursts gives a satisfactory quantitative explanation of the periods of superhumps and their changes during superoutburst.
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1985
It is now well established that the eruptions characteristic of dwarf novae result from changes in the luminosity of the accretion disc centred around the white dwarf component of these systems. These luminosity variations are most successfully accounted for by variations in the accretion flow through the disc but the mechanism responsible for this ...
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It is now well established that the eruptions characteristic of dwarf novae result from changes in the luminosity of the accretion disc centred around the white dwarf component of these systems. These luminosity variations are most successfully accounted for by variations in the accretion flow through the disc but the mechanism responsible for this ...
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1995
Our survey of faint DNe is carried out using the facilities of the ESO and Asiago Observatories.
R. U. Claudi, A. Bianchini
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Our survey of faint DNe is carried out using the facilities of the ESO and Asiago Observatories.
R. U. Claudi, A. Bianchini
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Balmer decrements in dwarf novae
Astrophysical Bulletin, 2017We investigate the question of the possible variable conditions in dwarf novae. The Balmer decrements are used as variability indicators due to their form being strongly dependent on the conditions in the radiating medium. It is shown that the decrements are usually anomalous and variable in time at minimum light, which indicates a variability of the ...
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