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Replaying the 2001 Outburst of WZ SGE

Published online by Cambridge University Press:  22 February 2018

D. Steeghs
D. Steeghs*
Affiliation:
Harvard-Smithsonian Center for Astrophysics

Abstract

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I present the key results of extensive optical spectroscopy obtained during the first three weeks of the 2001 super-outburst of WZ Sge. A sequence of Doppler maps of the accretion flow in various lines was constructed, and used to create real-time movies of WZ Sge as it evolved through the outburst. Main results include the detection of two-armed spiral asymmetries in the disk, emission from the irradiated donor star and an extended stream of emission around day 19 of the outburst that bears the hallmarks of a mass-transfer burst event.

Resumen

Resumen

Presento los resultados clave de la espectroscopía óptica extensa obtenida durante las primeras tres semanas de la superexplosión en 2001 de WZ Sge. Se construyó una secuencia de mapas Doppler del flujo de acreción en varias líneas, y se utilizó para crear películas en tiempo real de WZ Sge conforme avanzaba su evolución a través de la explosión. Los principales resultados incluyen la detección de asimetrías espirales de dos brazos en el disco, emisión irradiada desde la estrella donadora y una extensa corriente de emisión alrededor del día 19 después de la explosión que muestra huellas de un evento explosivo con transferencia de masa.

Keywords

AccretionAccretion Disks — NovaeCataclysmic Variables — StarsIndividual (WZ SGE)
Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 178 - 179
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

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