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Modelling the Late-time Hubble Space Telescope Imaging of the Outburst of the Recurrent Nova RS Ophiuchi (2006)

Published online by Cambridge University Press:  21 February 2013

Valério A. R. M. Ribeiro ,
Michael F. Bode  and
Robert Williams
Valério A. R. M. Ribeiro
Affiliation:
Astrophysics, Cosmology and Gravity Centre, Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa email: vribeiro@ast.uct.ac.za
Michael F. Bode
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead, CH41 1LD, UK
Robert Williams
Affiliation:
Space Telescope Institute, 3700 San Martin Drive Baltimore, MD 21218USA
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Abstract

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The nebular remnant of RS Ophiuchi was modelled using combined HST/ACS imaging and ground-based spectroscopy on day 155 after outburst as a two component bipolar expansion with a low velocity innermost hour-glass over density and a more extended high velocity dumbbell structure. The model was evolved to a much later date, day 455 after outburst, when second epoch HST images were secured. However, due to the lack of simultaneous ground-based spectroscopy the evolved model was much harder to constrain. One suggestion put forward was that the dumbbell structure expanded linearly while the inner hour-glass showed signs of deceleration. Archival data in the form of ground-based spectroscopy on day 415 were subsequently obtained. These new data suggest indeed that a non-linear expansion of the system occurred.

Keywords

binaries: symbioticcircumstellar matterline: profilesnovaecataclysmic variablesstars: individual (RS Ophiuchi)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 137 - 140
Copyright
Copyright © International Astronomical Union 2013

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