Results 61 to 70 of about 1,255,451 (193)

Outstanding problems in nuclear astrophysics: recent progress at TRIUMF

open access: yesAIP Advances, 2014
Recent experimental and theoretical efforts at TRIUMF on nuclear reactions relevant to big bang nucleosynthesis, quiescent stellar fusion, classical novae, and Type I X-ray bursts are described.
B. Davids
doaj   +1 more source

Ultraviolet observations of classical novae in outburst [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
More than a dozen classical novae in outburst have been observed with the International Ultraviolet Explorer since its launch in 1978. These data represent a crucial breakthrough in understanding several aspects of the classical novae phenomenon including nucleosynthesis, the energetics of the explosion, the dynamics of the mass ejection, and the ...
Angelo Cassatella   +1 more
openaire   +1 more source

Ancient Nova Shells of RX Pup Indicate Evolution of Mass Transfer Rate

open access: yesThe Astrophysical Journal Letters
RX Pup is a symbiotic binary that experienced a nova outburst in the 1970s. Here we report a discovery of a ∼1300 yr old nova shell around the system and a possible detection of a ∼7000 yr old nova shell. Together with the nova shell ejected in the 1970s,
Krystian Iłkiewicz   +4 more
doaj   +1 more source

Light Curve Morphology and Spectral Evolution in Classical and Recurrent Novae: Toward a Unified Physical Framework

open access: yesUniverse
Nova 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

On the possible existence of two classes of progenitors for classical novae [PDF]

open access: yes, 1992
In a 'fiducial sample' of classical novae for which the distances are established independently of the maximum magnitude vs rate of decline relationship, novae with t2 equal to or less than 12 days are found to be concentrated at low heights above the ...
DELLA VALLE, Massimo   +3 more
core  

A search for cool molecular gas in GK Persei and other classical novae

open access: yes, 2022
Detecting molecular line emission from classical nova remnants has the potential to reveal information on the composition of the ejecta, in particular accurate isotopic ratios in the matter processed by a thermonuclear runaway.
Tomek Kamiński   +7 more
core   +1 more source

Optical Spectroscopy and Temporal Evolution of the Nova V1405 Cas

open access: yesThe Astrophysical Journal
This 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
doaj   +1 more source

V2487 Oph 1998: a post nova in an intermediate polar

open access: yesEPJ Web of Conferences, 2014
V2487 Oph (Nova Oph 1998) is a classical nova that exploded in 1998. XMM-Newton observations performed between 2 and 9 years after the explosion showed emission related to restablished accretion, and indicative of a magnetic white dwarf.
Hernanz Margarita
doaj   +1 more source

New infrared results for classical novae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
AbstractRecent infrared studies of classical novae are described. The nucleation and growth of dust in nova ejecta was confirmed by optical/infrared photometry of several novae during the past five years including QU Vul, V842 Cen, V827 Her, and QV Vul.
openaire   +1 more source

Millinovae: A New Class of Transient Supersoft X-Ray Sources without a Classical Nova Eruption

open access: yesThe Astrophysical Journal Letters
Some accreting binary systems containing a white dwarf (such as classical novae or persistent supersoft sources) are seen to emit low-energy X-rays with temperatures of  ∼ 10 ^6 K and luminosities exceeding 10 ^35 erg s ^−1 .
Przemek Mróz   +20 more
doaj   +1 more source

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