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 1815-1827

Ämneskategorier

Fysik

Astronomi, astrofysik och kosmologi