SIMBAD references

2001MNRAS.326L..13O - Mon. Not. R. Astron. Soc., 326, L13-L18 (2001/September-2)

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

ORIO M., PARMAR A., BENJAMIN R., AMATI L., FRONTERA F., GREINER J., OGELMAN H., MINEO T., STARRFIELD S. and TRUSSONI E.

Abstract (from CDS):

We present BeppoSAX observations of Nova Velorum 1999 (V382 Vel), carried out in a broad X-ray band covering 0.1-300keV only 15d after the discovery(ref???[q4]) and again after 6 months. The nova was detected at day 15 with the BeppoSAX instruments which measured a flux Fx≃1.8x10–11erg.cm–2.s–1 in the 0.1-10keV range and a 2σ upper limit Fx<6.7x10–12erg.cm–2.s–1 in the 15-60keV range. We attribute the emission to shocked nebular ejecta at a plasma temperature kT≃6keV. At six months no bright component emerged in the 15-60keV range, but a bright central supersoft X-ray source appeared. The hot nebular component previously detected had cooled to a plasma temperature kT<1keV. There was strong intrinsic absorption of the ejecta in the first observation and not in the second, because the column density of neutral hydrogen decreased from N(H)≃1.7x1023 to N(H)≃1021cm–2 (close to the interstellar value). The unabsorbed X-ray flux also decreased from Fx=4.3x10–11 to Fx≃10–12erg.cm–2.s–1.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): stars: individual: V382 Vel - novae, cataclysmic variables - X-rays: stars

Simbad objects: 7

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2020.02.18-14:31:49

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