Results 11 to 20 of about 1,532,155 (277)

Discovery of a probable very fast extragalactic nova in a symbiotic binary [PDF]

Astronomy & Astrophysics, 2022
Very fast novae are novae that evolve exceptionally quickly (on timescales of only days). Due to their rapid evolution, very fast novae are challenging to detect and study, especially at early times. Here we report the discovery, made as part of our Transient UV Objects project, of a probable very fast nova in the nearby spiral galaxy NGC 300.
Modiano, D., Wijnands, R.
openaire   +5 more sources

A Comprehensive Light-curve Model of the Very Fast Nova V1674 Herculis

The Astrophysical Journal
V1674 Her is one of the fastest novae, of which the very early phase is well observed, including optical rise to the peak over 10 mag. We present a full theoretical light-curve model of V1674 Her.
Mariko Kato, Izumi Hachisu, Hideyuki Saio   +2 more
doaj   +3 more sources

A Multiwavelength Light-curve Analysis of the Very Fast Nova V1723 Sco

The Astrophysical Journal
We have analyzed multiwavelength light curves of the very fast nova V1723 Sco, based on our fully self-consistent nova explosion models. The time-stretching method gives a distance modulus in the V band of ( m  −  M ) _V  = 15.3 ± 0.2. Then, the absolute
Izumi Hachisu, Mariko Kato
doaj   +2 more sources

Fast Food and Deprivation in Nova Scotia [PDF]

Canadian Journal of Public Health, 2009
To examine the relationship between density of fast food restaurants and measures of social and material deprivation at the community level in Nova Scotia, Canada.Census information on population and key variables required for the calculation of deprivation indices were obtained for 266 communities in Nova Scotia.
Jennifer, Jones, Mikiko, Terashima, Daniel, Rainham   +2 more
openaire   +2 more sources

Quark nova model for fast radio bursts [PDF]

Research in Astronomy and Astrophysics, 2016
Updated Version: 18 pages, 9 figures, 2 tables; Style package (LaTeX macro) changed to RAA; Results unchanged; Discussion points added: other quark star observables, detailed light curve discussion (and figure), addition of rate estimate and clarifying additional clarifying comments.
Shand, Zachary, Ouyed, Amir, Koning, Nico, Ouyed, Rachid   +3 more
openaire   +2 more sources

Nova remnants … the fast siblings of planetary nebulae

Proceedings of the International Astronomical Union, 2023
AbstractClassical and recurrent novae are luminous eruptions taking place in binary star systems in which a white dwarf accretes material from a non-degenerate stellar companion. After the nova event, a shell of gas is expelled and expands into the surrounding environment at hundreds to thousands of km s−1.
Martín A. Guerrero, Edgar I. Santamaría   +1 more
openaire   +2 more sources

Near-infrared and optical studies of the fast nova V4643 Sgr (Nova Sagittarii 2001) [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
V4643 Sagittarii or Nova Sagittarii 2001 was discovered in outburst at 7.7 mag. on 2001 February 24. Here, we present near-infrared results of this fast classical nova obtained in the early decline phase in 2001 March followed by optical observations about one month later.
Ashok, N. M., Banerjee, D. P. K., Varricatt, W. P., Kamath, U. S.   +3 more
openaire   +2 more sources

Multiple outflows and delayed ejections revealed by early imaging of novae. [PDF]

Nat Astron
Novae are thermonuclear eruptions on accreting white dwarfs in interacting binaries. Although most of the accreted envelope is expelled, the mechanism—impulsive ejection, multiple outflows or prolonged winds, or a common-envelope interaction—remains ...
Aydi E, Monnier JD, Mérand A, Schaefer GH, Chomiuk L, Otulakowska-Hypka M, Fan JL, Li KL, Sokolovsky KV, Salinas R, Tucker M, Shappee B, Rudy R, Page KL, Kuin NPM, Buckley DAH, Craig P, Izzo L, Linford J, Metzger BD, Mukai K, Orio M, Shen KJ, Strader J, Sokoloski JL, Williams RE, Williams MN, Habtie GR, Kraus S, Anugu N, Bouquin JL, Chhabra S, Codron I, Gardner T, Gutierrez M, Ibrahim N, Lanthermann C, Setterholm BR, Ashall C, Hinkle JT, Jaeger T, Payne AV.   +41 more
europepmc   +6 more sources

BRAT-nova: fast and accurate mapping of bisulfite-treated reads [PDF]

Bioinformatics, 2016
Abstract Summary: In response to increasing amounts of sequencing data, faster and faster aligners need to become available. Here, we introduce BRAT-nova, a completely rewritten and improved implementation of the mapping tool BRAT-BW for bisulfite-treated reads (BS-Seq). BRAT-nova is very fast and accurate. On the human genome, BRAT-nova
Elena Yavorska Harris, Rachid Ounit, Stefano Lonardi   +2 more
openaire   +4 more sources

Quark-Novae in the outskirts of galaxies: an explanation of the fast radio burst phenomenon [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We show that old isolated neutron stars in groups and clusters of galaxies experiencing a Quark-Nova phase (QN: an explosive transition to a quark star) may be the source of fast radio bursts (FRBs). Each of the millions of fragments of the ultrarelativistic QN ejecta provides a collisionless plasma for which the ambient medium (
Rachid Ouyed, Denis Leahy, Nico Koning
openaire   +2 more sources