Gap Transients Interacting with Circumstellar Medium
Universe, 2022 In the last 20 years, modern wide-field surveys discovered a new class of peculiar transients, which lie in the luminosity gap between standard supernovae and classical novae. These transients are often called “intermediate luminosity optical transients”
Yongzhi Cai +3 more
doaj +1 more source
Classical and Recurrent Nova Models [PDF]
Proceedings of the International Astronomical Union, 2011 AbstractRemarkable progress in the understanding of nova outbursts has been achieved through combined efforts in photometry, spectroscopy and numerical simulations. According to the thermonuclear runaway model, novae are powered by thermonuclear explosions in the hydrogen-rich envelopes transferred from a low-mass stellar companion onto a close white ...
José Pont, Jordi +5 more
openaire +2 more sources
Ultraviolet and X-ray Light-Curves of Novae Observed by the Neil Gehrels Swift Observatory
Universe, 2022 With rapid response capabilities, and a daily planning of its observing schedule, the Neil Gehrels Swift Observatory is ideal for monitoring transient and variable sources.
Kim L. Page +2 more
doaj +1 more source
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
doaj +1 more source
Theory of Nova Outbursts and Type Ia Supernovae
Acta Polytechnica CTU Proceedings, 2015 We briefly review the current theoretical understanding of the light curves of novae. These curves exhibit a homologous nature, dubbed the universal decline law, and when time-normalized, they almost follow a single curve independently of the white dwarf
M. Kato, I. Hachisu
doaj +1 more source
Theoretical Light-curve Models of the Symbiotic Nova CN Cha—Optical Flat Peak for 3 Yr
The Astrophysical Journal, 2023 CN Cha is a slow symbiotic nova characterized by a 3 yr long optical flat peak followed by a rapid decline. We present theoretical light curves for CN Cha, based on hydrostatic approximation, and estimate the white-dwarf (WD) mass to be ∼0.6 M _☉ for a ...
Mariko Kato, Izumi Hachisu
doaj +1 more source
Early Spectral Evolution of Classical Novae: Consistent Evidence for Multiple Distinct Outflows [PDF]
Astrophysical Journal, 2020 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 processes. Here, we
E. Aydi +20 more
semanticscholar +1 more source
AT 2016dah and AT 2017fyp: the first classical novae discovered within a tidal stream [PDF]
Monthly notices of the Royal Astronomical Society, 2020 AT 2016dah and AT 2017fyp are fairly typical Andromeda galaxy (M 31) classical novae. AT 2016dah is an almost text book example of a ‘very fast’ declining, yet uncommon, Fe ii‘b’ (broad-lined) nova, discovered during the rise to peak optical luminosity,
M. Darnley +9 more
semanticscholar +1 more source
A Theory for the Maximum Magnitude versus Rate of Decline Relation of Classical Novae [PDF]
Astrophysical Journal, 2020 We propose a theory for the maximum magnitude versus rate of decline (MMRD) relation of novae using free–free emission model light curves built on the optically thick wind theory. We calculated for various sets of , where is the peak absolute V magnitude,
I. Hachisu +4 more
semanticscholar +1 more source
Hydrodynamic Simulations of Oxygen–Neon Classical Novae as Galactic 7Li Producers and Potential Accretion-induced Collapse Progenitors [PDF]
Astrophysical JournalWe report on studies of classical nova (CN) explosions where we follow the evolution of thermonuclear runaways (TNRs) on oxygen–neon (ONe) white dwarfs (WDs).
S. Starrfield +5 more
semanticscholar +1 more source