Results 31 to 40 of about 4,667,827 (292)

Early Spectral Evolution of Classical Novae: Consistent Evidence for Multiple Distinct Outflows [PDF]

open access: yesAstrophysical 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

Nova KT Eri 2009: infrared studies of a very fast and small amplitude He/N nova [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
We present near-infrared spectroscopic and photometric observations of the nova KT Eridani taken during the first 100 days following its discovery in 2009 November. The JHK spectra of the object have been taken from the Mount Abu Infrared Observatory using the Near-Infrared Imager/Spectrometer.
Raj, Ashish   +2 more
openaire   +2 more sources

A Multiwavelength Light-curve Analysis of the Classical Nova YZ Ret: An Extension of the Universal Decline Law to the Nebular Phase

open access: yesThe Astrophysical Journal, 2023
YZ Ret is the first X-ray flash detected classical nova, and is also observed in optical, X-ray, and gamma-ray. We propose a comprehensive model that explains the observational properties.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

M31N 2005-09c: a fast Fe II nova in the disk of M 31 [PDF]

open access: yesAstronomy & Astrophysics, 2007
Classical novae are quite frequent in M~31. However, very few spectra of M31 novae have been studied to date, especially during the early decline phase. Our aim is to study the photometric and spectral evolution of a M31 nova event close to outburst. We present photometric and spectroscopic observations of M31N 2005-09c, a classical nova in the disk of
Hatzidimitriou, D.   +5 more
openaire   +3 more sources

A very luminous, highly extinguished, very fast nova – V1721 Aquilae [PDF]

open access: yesAstronomy & Astrophysics, 2011
9 pages 10 figures, accepted for publication in A&A.
Hounsell, R.   +5 more
openaire   +2 more sources

Low- and Medium-Dispersion Spectropolarimetry of Nova V475 Scuti (Nova Scuti 2003): Discovery of an Asymmetric High-Velocity Wind in a Moderately Fast Nova [PDF]

open access: yesThe Astronomical Journal, 2006
27 pages, 7 figures, accepted for publication in ...
Kawabata, Koji S.   +8 more
openaire   +2 more sources

The peculiar fast nova Herculis 1991

open access: yesThe Astrophysical Journal, 1992
Unlike previously observed fast novae, the temporal evolution of Nova Her 1991 is similar to slower, dusty novae in which the appearance of thermal infrared emission from condensing dust was coincident with a transition in the visible light curve. However, the total luminosity radiated by Nova Her 1991 in the infrared was only ∼5% of the outburst ...
Charles E. Woodward   +3 more
openaire   +1 more source

FAST video series

open access: yes, 2014
Produced & directed a series of Families and Schools Together (FAST) videos. FAST has been recognized for its established track record of high retention rates (80%) of parents who are socially marginalized, and across languages, cultures, religion ...
McGorrian, T.   +1 more
core   +4 more sources

A NuSTAR observation of the fast symbiotic nova V745 Sco in outburst [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2015
Abstract The fast recurrent nova V745 Sco was observed in the 3–79 keV X-rays band with NuSTAR 10 d after the optical discovery. The measured X-ray emission is consistent with a collisionally ionized optically thin plasma at temperature of about 2.7 keV.
Orio, M.   +4 more
openaire   +3 more sources

AT 2016dah and AT 2017fyp: the first classical novae discovered within a tidal stream [PDF]

open access: yesMonthly 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

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