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Imaging Ejecta from the Final Flash Star V605 Aql

Published online by Cambridge University Press:  12 April 2016

Kenneth Hinkle ,
Richard Joyce ,
Steven Ridgway ,
Laird Close ,
Thomas Lebzelter ,
Josef Hron  and
Karin Andre
Kenneth Hinkle
Affiliation:
NOAO, P.O. Box 26732, Tucson, Arizona 85726, USA
Richard Joyce
Affiliation:
NOAO, P.O. Box 26732, Tucson, Arizona 85726, USA
Steven Ridgway
Affiliation:
NOAO, P.O. Box 26732, Tucson, Arizona 85726, USA
Laird Close
Affiliation:
Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, Arizona 85721, USA
Thomas Lebzelter
Affiliation:
Institute tor Astronomy, Türkenschanzstrasse 17, A1180 Vienna, Austria
Josef Hron
Affiliation:
Institute tor Astronomy, Türkenschanzstrasse 17, A1180 Vienna, Austria
Karin Andre
Affiliation:
Institute tor Astronomy, Türkenschanzstrasse 17, A1180 Vienna, Austria

Abstract

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The cloud of ejecta resulting from a final helium shell flash in V605 Aql has been imaged in both optical emission lines and infrared continuum. The obscuring circumstellar dust cloud, whose effects were first seen in 1923, is shown to be bipolar, suggesting dust formation takes place in a disk surrounding this star. The ongoing stellar mass loss in V605 Aql is part of the final flash episode, which has been ongoing since 1919. The pre-final flash planetary nebula, A58, is nearly circular. This implies that significant changes in the mass loss process occur between the AGB and final flash stages.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 187: Exotic Stars as Challenges to Evolution , 2002 , pp. 187 - 192
Copyright
Copyright © Astronomical Society of the Pacific 2002

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