NOVA V2362 CYGNI (NOVA CYGNI 2006): SPITZER, SWIFT, AND GROUND-BASED SPECTRAL EVOLUTION
Artikel i vetenskaplig tidskrift, 2008
Nova V2362 Cygni has undergone a number of very unusual changes. Ground-based spectroscopy initially revealed a normal sequence of events: the object faded and its near-infrared emission lines gradually shifted to higher excitation conditions until about day 100 when the optical fading reversed and the object slowly brightened. This was accompanied by a rise in the Swift X-ray telescope flux and a sudden shift in excitation of the visible and IR spectrum back to low levels. The new lower excitation spectrum revealed broad line widths and many P-Cygni profiles, all indicative of the ejection of a second shell. Eventually, dust formed, the X-ray brightness—apparently unaffected by dust formation—peaked and then declined, and the object faded at all wavelengths. The Spitzer dust spectra revealed a number of solid-state emission features that, at this time, are not identified.
novae
accretion
outflows
cataclysmic variables
line: profiles
accretion disks
stars: winds
Författare
David K. Lynch
Charles E. Woodward
Robert Gehrz
L. Andrew Helton
Richard J. Rudy
Ray W. Russell
Richard Pearson
Catherine C. Venturini
S. Mazuk
John Rayner
Jan-Uwe Ness
Sumner Starrfield
R. Mark Wagner
Julian P. Osborne
Kim Page
Richard C. Puetter
R. Brad Perry
Greg Schwarz
Karen Vanlandingham
John H Black
Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik
Michael Bode
Aneurin Evans
Thomas Geballe
Matthew Greenhouse
Peter Hauschildt
Joachim Krautter
William Liller
James Lyke
Jim Truran
T. Kerr
S. P. S. Eyres
Steven N. Shore
Astronomical Journal
0004-6256 (ISSN) 1538-3881 (eISSN)
Vol. 136 number 5, 2008 November 1815-1827Ämneskategorier
Fysik
Astronomi, astrofysik och kosmologi