NOVA V2362 CYGNI NOVA CYGNI 2006: SPITZER, SWIFT, AND GROUND-BASED SPECTRAL EVOLUTIONReportar como inadecuado




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Resumen

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.



Autor: Lynch, David K.; - Woodward, Charles E.; - Gehrz, Robert; - Helton, L. Andrew; - Rudy, Richard J.; - Russell, Ray W.; - Pearson,

Fuente: http://repositorio.uchile.cl/



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