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The X-ray emission from Nova V382 Velorum: I. The hard component observed with BeppoSAX

M. Orio·A. Parmar·R. Benjamin·L. Amati·F. Frontera·J. Greiner·H. Ogelman·T. Mineo·S. Starrfield·E. Trussoni
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Abstract

We present BeppoSAX observations of Nova Velorum 1999 (V382 Vel), done in a broad X-ray band covering 0.1-300 keV only 15 days after the discovery and again after 6 months. The nova was detected at day 15 with the BeppoSAX instruments in the energy range 1.8-10 keV and we attribute the emission to shocks in the ejecta. The plasma temperature was kT~6 keV and the unabsorbed flux was F(x)~4.3 x 10(-11) erg/cm**2/s. The nebular material was affected by high intrinsic absorption of the ejecta. 6 months after after the outburst, the intrinsic absorption did not play a role, the nova had turned into a bright supersoft source, and the hot nebular component previously detected had cooled to a plasma temperature kT<=1 keV. No emission was detected in either observation above 20 keV.

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M. Orio, A. Parmar, R. Benjamin, L. Amati, F. Frontera, J. Greiner, H. Ogelman, T. Mineo, S. Starrfield, E. Trussoni. 2001-02-26. The X-ray emission from Nova V382 Velorum: I. The hard component observed with BeppoSAX. https://doi.org/10.1046/j.1365-8711.2001.04448.x

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