Results 1 to 10 of about 270 (168)

Outbursts of dwarf novae [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1984
A review is given of the observational facts related to the outbursts of dwarf novae and of relevant aspects of the theory of accretion disks. It now appears possible to explain the outbursts of dwarf novae in terms of a nonstationary accretion behavior. Between the outbursts, the material supplied by the secondary component is stored in the relatively
openaire   +3 more sources

When does an old nova become a dwarf nova? Kinematics and age of the nova shell of the dwarf nova AT Cancri [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
8 pages, 8 ...
Shara, Michael M.   +4 more
openaire   +3 more sources

Temperatture esttiimattiion off EXDRA and SSUMI dwarff Nova systtems from spectroscopic data

open access: yesIraqi Journal of Physics, 2019
The seasonal behavior of the light curve for selected star SS UMI and EXDRA during outburst cycle is studied. This behavior describes maximum temperature of outburst in dwarf nova.
Arshed Ali Kadhem
doaj   +1 more source

Theory of Dwarf Novae [PDF]

open access: yesSymposium - International Astronomical Union, 1976
Recent work on the physical processes resulting from mass transfer between the red and blue components of dwarf nova binaries is reviewed. The optical behaviour of the blue component's accretion disc suggests that it may be the infall, accretion energy which is being liberated during outbursts.
openaire   +1 more source

Observations of Dwarf Novae [PDF]

open access: yesSymposium - International Astronomical Union, 1976
Spectroscopic and photometric observations relevant to the structure of classical novae, recurrent novae and dwarf novae are collected together. Details are given of optical, infrared, satellite ultraviolet, X-ray and radio observations. Most of these can be understood in terms of the hot spot model of cataclysmic variable stars.
openaire   +1 more source

THE DWARF NOVA OUTBURSTS OF NOVA HER 1960 (=V446 HER) [PDF]

open access: yesThe Astronomical Journal, 2011
To appear at the Astronomical Journal; 7 pages, 1 table, 11 ...
Honeycutt, R. K.   +2 more
openaire   +2 more sources

Relation between Long-term Activity and Luminosity of the Pre- and Post-novae CT Ser and V446 Her

open access: yesThe Astronomical Journal, 2023
We show a relation of the pre- and post-nova activity of CT Ser (nova 1948) and V446 Her (nova 1960), known to have remarkably similar orbital periods P _orb . We use both photographic and CCD photometric observations.
Vojtěch Šimon
doaj   +1 more source

Systematics of Dwarf Novae [PDF]

open access: yesAstrophysics and Space Science, 1987
AbstractFrom about 30 Dwarf Novae with the best determined distances the following relationships are found.(i)a tight correlation between absolute magnitude at maximum light, Mv (max), and orbital period, P.(ii)a correlation between Mv (min) and P showing wide scatter.(iii)a correlation between Mv (mean), the mean absolute magnitude averaged over ...
openaire   +1 more source

V2487 Oph 1998: a post nova in an intermediate polar

open access: yesEPJ Web of Conferences, 2014
V2487 Oph (Nova Oph 1998) is a classical nova that exploded in 1998. XMM-Newton observations performed between 2 and 9 years after the explosion showed emission related to restablished accretion, and indicative of a magnetic white dwarf.
Hernanz Margarita
doaj   +1 more source

SWSex Stars, Old Novae, and the Evolution of Cataclysmic Variables

open access: yesActa Polytechnica CTU Proceedings, 2015
The population of cataclysmic variables with orbital periods right above the period gap are dominated by systems with extremely high mass transfer rates, the so-called SW Sextantis stars.
L. Schmidtobreick, C. Tappert
doaj   +1 more source

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