Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aj....136.1815l&link_type=abstract
The Astronomical Journal, Volume 136, Issue 5, pp. 1815-1827 (2008).
Astronomy and Astrophysics
Astronomy
17
Accretion, Accretion Disks, Line: Profiles, Novae, Cataclysmic Variables, Stars: Winds, Outflows
Scientific paper
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.
Black John
Bode Michael
Evans Aneurin
Eyres Stewart P. S.
Geballe Thomas
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