Results 21 to 30 of about 459 (263)
Mixing fraction in classical novae [PDF]
Astronomy & Astrophysics, 2022 Context. Classical novae are powered by thermonuclear runaways occurring on the surface of accreting white dwarfs (WDs). In the observations, the enrichments of heavy elements in nova ejecta have been detected, indicating a mixing process between the accreted matter and the matter from the outer layers of the underlying WDs prior to nova outbursts ...
Guo, Yunlang, Wu, Chengyuan, Wang, Bo
openaire +2 more sources
Symbiotic Star T CrB as an Extreme SU UMa–type Dwarf Nova
The 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 ROSAT observations of classical novae [PDF]
International Astronomical Union Colloquium, 1996 We observed a number of classical and recurrent novae in the Galaxy and the LMC with the ROSAT X-ray telescope and searched the archival data for other serendipitous observations. Preliminary results show that only 9 out of 37 observed objects were bright enough in X-rays to be detected with ROSAT, either in outburst or at quiescence.Three basic ...
M. Orio, H. Ögelman, S. Balman
openaire +1 more source
The UBV Color Evolution of Classical and Symbiotic Novae
Acta 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
Is KT Mon a classical nova? [PDF]
Astronomy & Astrophysics, 2002 4 pages, accepted for publication in Astron ...
Kato, T., Yamaoka, H.
openaire +2 more sources
Acta 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
Spectra of V1405 Cas at the Very Beginning Indicate a Low-mass ONeMg White Dwarf Progenitor
The Astrophysical Journal, 2023 The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the properties of V1405 Cas (Nova Cassiopeiae 2021), which is an outlier given a ...
Kenta Taguchi +11 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Metabolic changes in immune cells direct the phenotype and function of the host immune system. Smart nanomaterials must target metabolic pathways to direct immune cell fate. This study reports the fabrication and first application of germanane quantum dots (GeHQDs) to modulate inflammation in vitro and in vivo.
Abhay Srivastava +7 more
wiley +1 more source
Formation of CN and CO Molecules in the Envelope of Nova V1391 Cas During the Near-maximum Phase
The Astronomical JournalModerate-resolution spectra ( R ≈ 2700) of the classical nova V1391 Cas were obtained in the near-infrared wavelength range of 0.95–2.45 μ m on UT 2020 August 14.41 using the Keck II telescope and the NIRES spectrograph.
Hideyo Kawakita, James E. Lyke
doaj +1 more source
Time-Dependent Dust Formation in Novae [PDF]
Journal of Astronomy and Space Sciences, 1991 The dust formation processes in novae are investigated with close attention to recent infrared observations. Using mainly the classical nucleation theory, we have calculated the time scales of dust formation and growth in the environments of novae. Those
Kyung-Won Suh
doaj