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Related papers: A Thousand and One Nova Outbursts

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We present a numerical scheme for the evolution of an accretion disc through a dwarf nova outburst. We introduce a time-varying artificial viscosity into an existing smoothed particle hydrodynamics code optimised for two and…

Astrophysics · Physics 2009-10-31 Michael Truss , James Murray , Graham Wynn , Richard Edgar

The physical mechanism driving mass ejection during a nova eruption is still poorly understood. Possibilities include ejection in a single ballistic event, a common envelope interaction, a continuous wind, or some combination of these…

A classical nova is a thermonuclear runaway initiated on a white dwarf accreting solar-like material from its stellar companion. Once the white dwarf accretes enough mass, the pressure at the base of the accreted layer reaches a critical…

Solar and Stellar Astrophysics · Physics 2025-04-18 Alexander Smith Clark , Michael Zingale

We analyze temporal evolution of the number of accreting white dwarfs with shell hydrogen burning in semidetached and detached binaries. We consider a stellar system in which star formation lasts for 10 Gyr with a constant rate, as well as…

High Energy Astrophysical Phenomena · Physics 2015-05-19 L. R. Yungelson

We report photometry results of a frequently outbursting dwarf nova, ER Ursae Majoris. To measure the outburst parameters of the system, we carried out analyses of the light curve, periodograms, and O-C diagrams. We investigated the…

Solar and Stellar Astrophysics · Physics 2026-01-26 K. Bakowska , B. Kirpluk , P. Zielinski , M. Motylinski , A. Gurgul , J. Golonka , K. Szyszka

The evolution of novae and Cataclysmic Variables (CVs) is driven by changes in the binary orbital periods. In a direct and critical test for various evolution models and their physical mechanisms, I measure the sudden changes in the period…

Solar and Stellar Astrophysics · Physics 2023-08-02 Bradley E. Schaefer

We present a statistical study of all measurable photometric features of a large sample of dwarf novae during their outbursts and superoutbursts. We used all accessible photometric data for all our objects to make the study as complete and…

Solar and Stellar Astrophysics · Physics 2016-05-16 Magdalena Otulakowska-Hypka , Arkadiusz Olech , Joseph Patterson

Context. The explosive burning that drives nova eruptions results in unique nucleosynthesis that heavily over-produces certain isotopes relative to the solar abundance. However, novae are often ignored when considering the chemical…

Astrophysics of Galaxies · Physics 2024-07-29 Alex J. Kemp , Amanda I. Karakas , Andrew R. Casey , Benoit Cote , Robert G. Izzard , Zara Osborn

We found that the 1899 nova V606 Aql currently shows dwarf nova outbursts with a typical cycle length of 270 d and amplitudes of ~1.5 mag using Public Data Release of Zwicky Transient Facility observations. The low mass-transfer rate in…

Solar and Stellar Astrophysics · Physics 2021-07-16 Taichi Kato , Naoto Kojiguchi

Using the disc instability model and a simple but physically reasonable model for the X-ray, extreme UV, UV and optical emission of dwarf novae we investigate the time lags observed between the rise to outburst at different wavelengths. We…

Astrophysics · Physics 2009-11-10 Matthias R. Schreiber , Jean-Marie Hameury , Jean-Pierre Lasota

Recurrent novae are binary stars in which a white dwarf accretes matter from a less evolved companion, either a red giant or a main-sequence star. They have dramatic optical brightenings of around 5-6 mag in V in less than a day, several…

Solar and Stellar Astrophysics · Physics 2015-05-27 Sotiris Adamakis , Stewart Eyres , Aveek Sarkar , Robert Walsh

(Abridged) We report on the analysis of high-speed photometry of the dwarf nova EX Dra through its outburst cycle with eclipse mapping techniques. The eclipse maps show evidence of the formation of a one-armed spiral structure in the disc…

Astrophysics · Physics 2009-10-31 Raymundo Baptista , M. S. Catalan

Hubble Space Telescope spectra obtained in 2010 and 2011, three and four years after the large amplitude dwarf nova outburst of V455 And, were combined with optical photometry and spectra to study the cooling of the white dwarf, its spin,…

We examine the properties of white dwarfs (WDs) accreting hydrogen-rich matter in and near the stable burning regime of accretion rates as modeled by time-dependent calculations done with Modules for Experiments in Stellar Astrophysics…

Solar and Stellar Astrophysics · Physics 2015-06-17 William M. Wolf , Lars Bildsten , Jared Brooks , Bill Paxton

Two types of nova evolutions can be realized in low mass white dwarfs of ~0.5-0.7 M_sun, i.e., an evolution with optically thick winds like in usual classical novae, or an another type of evolution without them like in the symbiotic nova PU…

Solar and Stellar Astrophysics · Physics 2015-05-30 Mariko Kato , Izumi Hachisu

We show that long-period dwarf novae offer a promising route for making Type Ia supernovae. For typical dwarf nova duty cycles d ~ 0.1 - 0.01, mass is accreted by the white dwarf mainly during dwarf nova outbursts at rates allowing steady…

Astrophysics · Physics 2009-11-07 A. R. King , D. J. Rolfe , K. Schenker

Light curve analysis of decay phase of nova outburst are summarized. Nova duration is determined by the strong wind mass-loss which depends only on the white dwarf mass. Fast novae correspond very massive white dwarfs and very slow novae…

Astrophysics · Physics 2007-05-23 Mariko Kato

The theoretical and observed populations of pre-cataclysmic variables (pre-CVs) are dominated by systems with low-mass white dwarfs (WDs), while the WD masses in CVs are typically high. In addition, the space density of CVs is found to be…

Solar and Stellar Astrophysics · Physics 2016-01-27 G. Nelemans , L. Siess , S. Repetto , S. Toonen , E. S. Phinney

I review X-ray observations of classical and recurrent novae in outburst. Significant X-ray flux is emitted by the nova shell, with a peak luminosity up to 10**35 erg/cm**2/s in the 0.2-10 keV range.In recurrent nova systems, or in novae…

Astrophysics · Physics 2016-08-30 Marina Orio

Novae are the observational manifestations of thermonuclear runaways on the surface of accreting white dwarfs (WDs). Although novae are an ubiquitous phenomenon, their properties at low metallicity are not well understood. Using the…

Solar and Stellar Astrophysics · Physics 2019-10-02 Hai-Liang Chen , T. E. Woods , L. R. Yungelson , Luciano Piersanti , M. Gilfanov , Zhanwen Han