Results 31 to 40 of about 1,255,451 (193)
Understanding the cosmic abundance of 22Na: Lifetime measurements in 23Mg [PDF]
EPJ Web of Conferences, 2023 Simulations of explosive nucleosynthesis in novae predict the production of 22Na, a key astronomical observable to constrain nova models. Its gamma-ray line at 1.275 MeV has not yet been observed by the gamma-ray space telescopes.
Fougères C. +3 more
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Adding Classical Novae Contribution to the Isotopic Scaling model [PDF]
, 2023 The Isotopic Scaling model(West & Heger, 2013) provides a complete average isotopic decomposition for our Milky Way as a function of metallicity and it requires an initial Solar Abundance Decomposition as a starting point.
Chen, Mengxi
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The Astrophysical Journal Supplement Series, 2023 M87 has been monitored with a cadence of 5 days over a span of 9 months through the near-ultraviolet (NUV; F275W) and optical (F606W) filters of the Wide Field Camera 3 (WFC3) of the Hubble Space Telescope.
Michael M. Shara +12 more
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Theory of Classical Novae [PDF]
Proceedings of The Golden Age of Cataclysmic Variables and Related Objects - III — PoS(Golden2015), 2017 We briefly review the current understanding of classical novae. Nova light curves basically exhibit a homologous nature, beside the dust blackout and oscillatory behavior, in spite of very different evolution timescale from fast to slow novae. Optically thick winds governs the evolution of decay phase of nova outbursts, of which mass-loss rate ...
Mariko Kato, Izumi Hachisu
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Hard Emission from Classical Novae [PDF]
, 1992 The thermonuclear model of classical novae has been very successful in explaining many observed features of novae. It also predicts unique gamma-ray and X-ray signatures, a few of which possibly have already been observed. We describe recent developments
Leising, Mark D
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The outbursts of classical and recurrent novae [PDF]
Astronomische Nachrichten, 2010 AbstractIn this review, I present our current state of knowledge regarding both Classical Nova and Recurrent Nova systems. Two particular objects (V1974 Cyg and RS Oph) are chosen to illustrate the range of phenomena that may be associated with their outbursts.
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The Ejecta of Classical Novae [PDF]
Symposium - 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
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The Cyclic Evolution of Classical Novae [PDF]
International 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 ...
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Hydrogen Burning of $^{29}$Si and Its Impact on Presolar Stardust Grains from Classical Novae [PDF]
, 2022 Presolar stardust grains found in primitive meteorites are believed to retain the isotopic composition of stellar outflows at the time of grain condensation.
Downen, L. +19 more
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Relation between Long-term Activity and Luminosity of the Pre- and Post-novae CT Ser and V446 Her
The Astronomical Journal, 2023 We show a relation of the pre- and post-nova activity of CT Ser (nova 1948) and V446 Her (nova 1960), known to have remarkably similar orbital periods P _orb . We use both photographic and CCD photometric observations.
Vojtěch Šimon
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