The 1999 Outburst of the Recurrent Nova U Scorpii

dc.contributor.author	Anupama, G. C
dc.contributor.author	Dewangan, G. C
dc.date.accessioned	2008-08-14T11:31:40Z
dc.date.available	2008-08-14T11:31:40Z
dc.date.issued	2000-03
dc.identifier.citation	The Astronomical Journal, Vol. 119, No. 3, pp. 1359 - 1364	en
dc.identifier.issn	0004-6256
dc.identifier.uri	http://hdl.handle.net/2248/3151
dc.description.abstract	The 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 Msolar. Based on the Mg I b 5174 Å and the Fe I+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.	en
dc.format.extent	159405 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	The American Astronomical Society	en
dc.relation.uri	http://www.iop.org/EJ/abstract/1538-3881/119/3/1359/	en
dc.subject	Stars: novae	en
dc.subject	Cataclysmic variables	en
dc.subject	Stars: individual (U Scorpii)	en
dc.subject	Techniques: spectroscopic	en
dc.title	The 1999 Outburst of the Recurrent Nova U Scorpii	en
dc.type	Article	en