AAS 199th meeting, Washington, DC, January 2002
Session 135. Circumstellar Material and Atmospheres: Hotter
Display, Thursday, January 10, 2002, 9:20am-4:00pm, Exhibit Hall

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[135.11] Imaging the Ejecta from the Final Flash Star V605 Aql

K. H. Hinkle, R.R. Joyce, S.T. Ridgway (NOAO), L. Close (Steward Obs.), T. Lebzelter, J. Hron, K. Andre, M. Sperl (Inst. fur Astronomie)

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.


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