G. C. Anupama and G. C. Dewangan 2000 The Astronomical Journal 119 1359 doi:10.1086/301249
The 1999 Outburst of the Recurrent Nova U Scorpii
FREE ISSUEG. C. Anupama1 and G. C. Dewangan2
Show affiliationsThe optical spectra of the recurrent nova U Sco obtained in five epochs 0.45–42.35 days after the 1999 outburst maximum are presented here. For the first time, an outburst spectrum of U Sco has been obtained as early as 0.45 days after maximum. The spectral evolution is broadly similar to the 1979 and 1987 outbursts. The mass of the ejected shell is estimated to be ~10-7 M
. Based on the Mg I b 5174 Å and the Fe 
+ Ca I 5270 Å absorption indices in the late-decline phase spectrum of day 42.35, we estimate the secondary to be a K2 subgiant star.
- Keywords
novae, cataclysmic variables; stars: individual (U Scorpii); techniques: spectroscopic
- Dates
-
Issue 3 (2000 March)
Received 1999 July 16, accepted for publication 1999 November 29
-
The 1999 Outburst of the Recurrent Nova U Scorpii
G. C. Anupama and G. C. Dewangan 2000 The Astronomical Journal 119 1359
-
Climate change in Inner Mongolia from 1955 to 2005—trends at regional, biome and local scales
N Lu et al 2009 Environ. Res. Lett. 4 045006
-
Mesoscopic scattering of spin s particles
C A Müller et al 2005 J. Phys. A: Math. Gen. 38 7807
-
The Evolution of Blue Stragglers Formed via Stellar Collisions
J. A. Ouellette and C. J. Pritchet 1998 The Astronomical Journal 115 2539
-
Effect of surface interactions on the hysteresis of capillary condensation in nanopores
F. Casanova et al 2008 EPL 81 26003
-
Impacts of recent climate change on Wisconsin corn and soybean yield trends
Christopher J Kucharik and Shawn P Serbin 2008 Environ. Res. Lett. 3 034003
-
Observational Evidence of Optical Variability in L Dwarfs
Malay Maiti 2007 The Astronomical Journal 133 1633
-
Fermi Observations of GRB 090902B: A Distinct Spectral Component in the Prompt and Delayed Emission
A. A. Abdo et al 2009 ApJ 706 L138
-
The Large- and Small-Scale Structures of Dust in the Star-forming Perseus Molecular Cloud
Helen Kirk et al. 2006 ApJ 646 1009
-
The r-Process in Supersonic Neutrino-driven Winds: The Role of the Wind Termination Shock
Takami Kuroda et al. 2008 ApJ 672 1068