Imaging the Ejecta from the Final Flash Star V605 Aql

Autor(en)

K. H. Hinkle, R. R. Joyce, S. T. Ridgway, L. Close, T. Lebzelter, J. Hron, K. Andre, M. Sperl

Abstrakt

The cloud of ejecta resulting from a final helium shell flash in V605

Aql can be resolved with a diameter of slightly more than 1 arcsecond.

We have obtained images of this cloud in optical emission lines using

WFPC2/HST and in the near-infrared continuum using Hokupa'a/Gemini

North. The nebula was not resolved in a 10 micron image obtained at ESO.

This data will be compared to existing photometry of this object. The

images and the photometry suggest that the obscuring dust cloud around

the star, whose effects were first seen in 1923, is bipolar. Dust

formation appears to takes place in a disk surrounding this star. We

will show that the mass loss from V605 Aql did not occur suddenly but

has been ongoing since 1919.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

National Optical Astronomy Observatory, Tucson, University of Arizona, Universität Wien

Journal

Bulletin of the American Astronomical Society

Band

33

Seiten

1507

ISSN

0002-7537

Publikationsdatum

2002

ÖFOS 2012

103004 Astrophysik

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