Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.0404s&link_type=abstract
American Astronomical Society Meeting 210, #04.04; Bulletin of the American Astronomical Society, Vol. 39, p.99
Astronomy and Astrophysics
Astronomy
1
Scientific paper
V723 Cas is a slow classical nova that was discovered in outburst in August 1995. Its early light curve is similar to HR Del and includes numerous "flares" that makes determination of the general properties based on the decay time difficult. Over the last 5 years the optical emission line spectrum has become increasingly dominated by high ionization lines such as [Fe VII] (6087) an [Fe X] (6373). A recent series of Swift X-ray observations have confirmed that V723 Cas is currently a strong X-ray source. The spectra resemble that of a super-soft-source with a peak around 0.4 keV implying that V723 Cas is still burning hydrogen fuel on the surface of its white dwarf more than 11 years after outburst. The Swift observations were part of a recent and continuing multiwavelength observational campaign, including GALEX, Spitzer and ground based optical and NIR spectroscopy. This poster presents preliminary analysis of the ultraviolet and optical data. Based on observations made with the NASA Galaxy Evolution Explorer. GALEX is operated for NASA by the California Institute fo Technology under NASA contract NAS5-98034.
Helton Andrew
Ness J.
Schwarz Greg
Starrfield Summer
Vanlandingham Karen
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