Chandra ACIS-I and LETGS X-ray observations of Nova 1999 Velorum (V382 Vel)

Details Chandra ACIS-I and LETGS X-ray observations of Nova 1999 Velorum (V382 Vel) Chandra ACIS-I and LETGS X-ray observations of Nova 1999 Velorum (V382 Vel)

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..637..377b&link_type=abstract

CLASSICAL NOVA EXPLOSIONS: International Conference on Classical Nova Explosions. AIP Conference Proceedings, Volume 637, pp. 3

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15

Novae, Dwarf Novae, Recurrent Novae, And Other Cataclysmic Variables, X-Ray Sources, X-Ray Bursts

Scientific paper

The prelimenary analysis of the Chandra ACIS-I and LETGS observations carried out over a period of 8 months starting 7 months after the outburst of Nova Velorum 1999 (=V382 Vel) is presented here. We find that within a period of less than 6 weeks the flux of the soft X-ray component (.0.4-0.8 keV) decreases nearly 200 fold. In addition, we find that the soft component seems to become fainter following a steeper power law than the hard component. Most lines detected with the Chandra LETGS are broadened with a corresponding FWHM ~ 2000 km/s that is compatible with the velocity of the expanding shell. The He-like triplets of OVII and NVI allow us to put some constraints on the plasma temperature of 4.5-5.0 105 K.

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