Results 51 to 60 of about 493,128 (267)
Discovery of an eclipsing dwarf nova in the ancient nova shell Te 11 [PDF]
, 2015 We report on the discovery of an eclipsing dwarf nova (DN) inside the peculiar, bilobed nebula Te 11. Modelling of high-speed photometry of the eclipse finds the accreting white dwarf to have a mass 1.18 M⊙ and temperature 13 kK.
B. Miszalski +10 more
semanticscholar +1 more source
Observations of Dwarf Novae [PDF]
Symposium - 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
OUTBURST CYCLICITY OF DWARF NOVA VZ AQUARII
Odessa Astronomical Publications, 2017 New linear elements for outbursts of VZ Aqr from 1904 to 1987 were obtained with P0 = 50.4053d. Two states of outburst activity are distinguished with cycle lengths 47.128d and 55.041d, replacing each other during Π = 13.2yr and accompanied by a maximum ...
L. I. Shakun
doaj +1 more source
Hot white dwarfs and the UV delay in dwarf novae
, 1998 We calculate the effect of illumination of dwarf nova accretion discs by radiation from a hot, central, white dwarf. We show that only for very hot white dwarfs (Teff ~ 40 000$ K) the inner region of quiescent dwarf nova discs are partially depleted so ...
Dubus, G. +2 more
core +2 more sources
V1006 Cygni: Dwarf nova showing three types of outbursts and simulating some features of the WZ Sge-type behavior [PDF]
, 2015 We observed the 2015 July-August long outburst of V1006 Cyg and established this object to be an SU UMa-type dwarf nova in the period gap. Our observations have confirmed that V1006 Cyg is the second established object showing three types of outbursts ...
Taichi Kato +19 more
semanticscholar +1 more source
Time-Dependent Variations of Accretion Disk [PDF]
Journal of Astronomy and Space Sciences, 1987 In dward nova we assume the primary star as a white dwarf and the secondary as the late type star which filled Roche lobe. Mass flow from the secondary star leads to the formation of thin accretion disk around the white dwarf.
Hye-Weon Na +2 more
doaj
SUPEROUTBURST OF V1504 CYGNI IN 2003
Odessa Astronomical Publications, 2017 The photometry of the SU UMa-type dwarf nova V1504 Cygni during the superoutburst is performed. The star displayed the superoutburst decay at a rate about 0.15 mag / day. Evolution of super-humps during the superoutbursts is discussed.
O. I. Antonyuk
doaj +1 more source
Theoretical Light-curve Models of the Symbiotic Nova CN Cha—Optical Flat Peak for 3 Yr
The Astrophysical Journal, 2023 CN Cha is a slow symbiotic nova characterized by a 3 yr long optical flat peak followed by a rapid decline. We present theoretical light curves for CN Cha, based on hydrostatic approximation, and estimate the white-dwarf (WD) mass to be ∼0.6 M _☉ for a ...
Mariko Kato, Izumi Hachisu
doaj +1 more source
1998 Superoutburst of the Large-Amplitude SU UMa-Type Dwarf Nova WX Ceti
, 2001 We observed the 1998 November superoutburst of WX Cet, a dwarf nova originally proposed as a WZ Sge-like system. The observation established that WX Cet is an SU UMa-type dwarf nova with a mean superhump period of 0.05949(1) d, which is 2.1% longer than ...
Kato, Taichi +4 more
core +2 more sources
The standstill luminosity in Z Cam systems [PDF]
, 2000 We consider accretion discs in close binary systems. We show that heating of a disc at the impact point of the accretion stream contributes significantly to the local energy budget at its outer edge. As a result the thermal balance relation between local
King, A., Rudge, C., Stehle, R.
core +3 more sources