Results 101 to 110 of about 86,009 (222)
Optical Spectroscopy and Temporal Evolution of the Nova V1405 Cas
The Astrophysical JournalThis paper presents the findings from our study of nova V1405 Cas over the first 1051 days after the outburst. The study includes an analysis of the photometric light-curve evolution, along with a detailed spectroscopic analysis.
Gesesew Reta Habtie +3 more
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The behaviour of quiescent accretion discs in dwarf novae
We propose a simple explanation for the constant mean brightness observed between outbursts in dwarf novae. Secular changes in the total energy dissipation rate of the accretion disc brought about by variations in surface density, temperature and disc ...
Wynn, G. A. +2 more
core +1 more source
The Fall and the Rise of X-Rays from Dwarf Novae in Outburst: RXTE Observations of VW Hydri and WW Ceti [PDF]
, 2011 In a dwarf nova, the accretion disk around the white dwarf is a source of ultraviolet, optical, and infrared photons, but is never hot enough to emit X-rays.
Nelson, T. +7 more
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A 70 pc Diameter Nova Superremnant Surrounding the Recurrent Nova RS Ophiuchi
The Astronomical JournalRecurrent novae undergo thermonuclear-powered eruptions separated by less than 100 yr, enabled by subgiant or red giant donors transferring hydrogen-rich matter at very high rates onto their massive white dwarf companions.
Michael M. Shara +11 more
doaj +1 more source
Can dwarf novae produce type Ia supernovae?
Astronomy & AstrophysicsContext. Accreting white dwarfs (WDs) are considered some of the most promising progenitor candidates of type Ia supernovae (SNe Ia). Dwarf novae (DNe), a subclass of cataclysmic variables, consist of a CO WD accretor and a low-mass donor star, which can
Li R., Wu C., Dai Z., Wang B.
doaj +1 more source
Publications of the Astronomical Society of the Pacific, 2005 We report a photometric study of the WZ Sagittae-type dwarf nova PQ Andromedae. The light curve shows strong (0.05 mag full amplitude) signals with periods of 1263(1) and 634(1) s, and a likely double-humped signal with P=80.6(2) min. We interpret the first two as nonradial pulsation periods of the underlying white dwarf, and the last as the orbital ...
Patterson, Joseph +4 more
openaire +2 more sources
UniverseNova eruptions exhibit diverse photometric and spectroscopic properties traditionally classified using empirical light-curve morphology and spectral taxonomy.
Saad Mohammed Alshehri +1 more
doaj +1 more source
The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra
The Astrophysical Journal Supplement SeriesThe Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos +2 more
doaj +1 more source
A Photoionization Model for the Infrared Coronal Line Emission in the Classical Nova V1716 Scorpii
The Astrophysical JournalA near-infrared spectrum of nova V1716 Scorpii (PNV J17224490-4137160), a recent bright ( ${V}_{\max }=7.3$ mag), Fermi-LAT detected γ -ray source, was modeled using the photoionization code CLOUDY.
C. E. Woodward +4 more
doaj +1 more source
A Simple, Unifying Model of the Extreme Ultraviolet Spectra of Dwarf Novae in Outburst
, 2003 A simple model of the boundary layer and accretion disk wind of dwarf novae in outburst is briefly described and applied to the Chandra Low Energy Transmission Grating spectra of WZ Sge and SS Cyg in ...
Mauche, C W
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