Results 31 to 40 of about 13,470 (289)

AT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL [PDF]

open access: yesThe Astrophysical Journal, 2012
We are systematically surveying all known and suspected Z Cam-type dwarf novae for classical nova shells. This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis.
Shara, Michael M.   +7 more
openaire   +3 more sources

Symbiotic Star T CrB as an Extreme SU UMa–type Dwarf Nova

open access: yesThe Astrophysical Journal Letters, 2023
T CrB is a symbiotic recurrent nova that exhibits quiescent and active phases between its classical nova eruptions. The statistical properties of these active phases have been poorly studied thus far. Because of that their nature remained unknown.
Krystian Iłkiewicz   +2 more
doaj   +1 more source

The Ejecta of Classical Novae [PDF]

open access: yesSymposium - International Astronomical Union, 2001
Classical novae are interacting binary stars in which a thermonuclear runaway in material accreted onto a white dwarf from a companion red dwarf results in the ejection of around 10−4M⊙ at hundreds to thousands of kilometres per second. Recent Hubble Space Telescope and MERLIN imaging of the expanding ejecta from several classical novae are presented ...
T.J. O'Brien   +4 more
openaire   +1 more source

The UBV Color Evolution of Classical and Symbiotic Novae

open access: yesActa Polytechnica CTU Proceedings, 2015
We identified a general course of classical nova outbursts in the B − V vs. U − B diagram. It has been reported that novae show spectra similar to A–F supergiants near optical light maximum.
I. Hachisu, M. Kato
doaj   +1 more source

The Cyclic Evolution of Classical Novae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
The cyclic evolution of classical novae (CN) cannot be observed, as in the case of recurrent or dwarf novae. The duration of a typical cycle may range from a few thousand to a few 105 years. Thus we have to rely on theoretical studies for understanding the periodic outbursts — due to thermonuclear runaways (TNR) — on the surface of accreting white ...
openaire   +1 more source

Models for the soft X-ray emission of post-outburst classical novae

open access: yes, 2005
A hydrostatic and stationary white dwarf envelope model has been developed for the study of the post-outburst phases of classical novae and their soft X-ray emission.
Hernanz, Margarita, Sala, Gloria
core   +1 more source

When a Nova Becomes Old

open access: yesActa Polytechnica CTU Proceedings, 2015
Here we present the preliminary results of a project aimed at unveiling the nature of classical novae decades after their eruption. The ultimate goal of this project is to describe the population of cataclysmic variables which give rise to nova ...
A. Ederoclite   +3 more
doaj   +1 more source

Fermi LAT Gamma-ray Detections of Classical Novae V1369 Centauri 2013 and V5668 Sagittarii 2015

open access: yes, 2016
We report the Fermi Large Area Telescope (LAT) detections of high-energy (>100 MeV) gamma-ray emission from two recent optically bright classical novae, V1369 Centauri 2013 and V5668 Sagittarii 2015.
Cheung, C. C.   +11 more
core   +3 more sources

A Nova Outburst Powered by Shocks [PDF]

open access: yes, 2017
Classical novae are runaway thermonuclear burning events on the surfaces of accreting white dwarfs in close binary star systems, sometimes appearing as new naked-eye sources in the night sky.
Beloborodov, Andrei M.   +15 more
core   +1 more source

The awakening of a classical nova from hibernation [PDF]

open access: yesNature, 2016
Cataclysmic variable stars (CVs) are close binary systems consisting of a white dwarf (primary) that is accreting matter from a low-mass companion star (secondary). From time to time such systems undergo large-amplitude brightenings. The most spectacular eruptions, over $10^4$ times in brightness, occur in classical novae and are caused by a ...
Mroz, P.   +11 more
openaire   +3 more sources

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