Results 41 to 50 of about 270 (168)
DETECTION OF SUPERHUMPS IN THE DWARF NOVA PV PERSEI
Odessa Astronomical Publications, 2017 The CBA (Center for Backyard Astrophysics) Belgium Observatory belongs to a global network of small photometric telescopes, that study periodic phenomena in Cataclysmic Variables (CVs).
T. Vanmunster
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The Astrophysical JournalThe rising phase toward the optical maximum of a classical nova is one of the last frontiers of nova study. Constructing free–free emission model light curves based on our fully self-consistent nova explosion models, we present several theoretical light ...
Mariko Kato +2 more
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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
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Nova Explosion of Mass-Accreting White Dwarfs [PDF]
Publications of the Astronomical Society of Japan, 1979 Abstract The evolution of mass-accreting white dwarfs has been computed from the onset of accretion through nova explosion. Two cases have been considered: a carbon-oxygen white dwarf of 1.3 M◉ with the accretion rate of 1.0 × 10−10M◉ yr−1 and a helium white dwarf of 0.4 M◉ with 1.0×10−8M◉ yr−1.
Ken’ichi Nomoto +2 more
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The Rise of Nova V1674 Herculis
The Astrophysical JournalObservational constraints on classical novae are heavily biased to phases near optical peak and later because of the simple fact that novae are not typically discovered until they become bright. The earliest phases of brightening, coming before discovery,
Robert M. Quimby +5 more
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The Astrophysical Journal, 2023 AH Her is a Z Cam-type dwarf nova with an orbital period of ∼0.258 days. Dwarf nova oscillations and long-period dwarf nova oscillations have been detected, but no quasiperiodic oscillations (QPOs) and negative superhumps (NSHs) have been found.
Qi-Bin Sun, Sheng-Bang Qian, Min-Yu Li
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Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis
The Astrophysical JournalClassical novae are common cataclysmic events involving a binary system of a white dwarf and a main-sequence or red giant companion star. In metal-poor environments, these explosions produce ejecta differently from their solar counterparts due to the ...
Athanasios Psaltis +3 more
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Dwarf Nova Outbursts and Superoutbursts [PDF]
International Astronomical Union Colloquium, 1996 Dwarf nova outbursts provide an almost unique opportunity of getting an insight into the nature of viscosity in accretion disks or, within the α- disk approach, of putting some constraints on α. In particular, the strong dependence of the viscous time-scale on viscosity itself permits us to estimate a almost directly from the observed time-scales.
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The Astrophysical JournalFor Galactic novae, I calculate and collect a comprehensive catalog of 208 measures of white dwarf (WD) masses ( M _WD ) and 232 measures of average V magnitudes in quiescence ( V _q ). These are collected into a comprehensive catalog of most fundamental
Bradley E. Schaefer
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The Astrophysical Journal, 1983 Observational data on mass-transfer rates and radii of disks indicate that the outer parts of disks in novae and nova-like binaries are sufficiently hot for stationary accretion; those in dwarf novae are too cool to avoid an accretion instability, while these in Z Cam systems are the borderline cases.
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