Results 21 to 30 of about 1,532,155 (277)
Nova KT Eri 2009: infrared studies of a very fast and small amplitude He/N nova [PDF]
Monthly 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
M31N 2005-09c: a fast Fe II nova in the disk of M 31 [PDF]
Astronomy & 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]
Astronomy & 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]
The 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
The 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
A NuSTAR observation of the fast symbiotic nova V745 Sco in outburst [PDF]
Monthly 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
Beryllium detection in the very fast nova ASASSN-16kt (V407 Lupi) [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We present high-resolution spectroscopic observations of the fast nova ASASSN-16kt (V407 Lup). A close inspection of spectra obtained at early stages has revealed the presence of low-ionization lines, and among the others we have identified the presence of the ionised $^7$Be doublet in a region relatively free from possible contaminants. After studying
L Izzo +10 more
openaire +9 more sources
The Calibration of Novae as Distance Indicators [PDF]
, 1995 The problem of the correct calibration of the maximum magnitude versus rate of decline relationship for Galactic novae is discussed, on the basis of the properties of the nova populations of M31 and the Large Magellanic Cloud (LMC). We have compared the "
DELLA VALLE, Massimo +3 more
core +1 more source
Positron Annihilation Gamma Rays from Novae [PDF]
, 1987 The potential for observing annihilation gamma rays from novae is investigated. These gamma rays, a unique signature of the thermonuclear runaway models of novae, would result from the annihilation of positrons emitted by beta(+)-unstable nuclei produced
Clayton, Donald D, Leising, M D
core +4 more sources
V2676 Oph: Estimating physical parameters of a moderately fast nova
Acta Astronomica, 2018 Using our previously reported observations, we derive some physical parameters of the moderately fast nova V2676 Ophiuchi 2012 # 1. The best-fit CLOUDY model of the nebular spectrum obtained on 2015 May 8 shows a hot white dwarf source with Tbb = 1.0 x 10^{5} K having a luminosity of 1.0 x 10^{38} ergs/s.
Raj, A. +4 more
openaire +2 more sources