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Astron. Astrophys. 338, 132-138 (1998)


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Near-infrared adaptive optics imaging of dust shells around five late-type stars with COME-ON+ *

P. Cruzalèbes 1, B. Lopez 2, M. Bester 3, E. Gendron 4 and B. Sams 5

1 Observatoire de la Côte d'Azur, Département Fresnel UMR 6528, Av. Copernic, F-06130 Grasse, France (cruzalebes@obs-azur.fr)
2 Observatoire de la Côte d'Azur, Département Fresnel UMR 6528, BP 4229, F-06034 Nice Cedex 4, France (lopez@obs-nice.fr)
3 Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA 94720-7450, USA (manfred@ssl.berkeley.edu)
4 Observatoire de Paris - Meudon, DESPA, F-92195 Meudon Cedex, France (egendron@hplyot.obspm.fr)
5 Mediateam, Weidenweg 2c, D-85375 Neufahrn, Germany (sams@mediateam.de)

Received 15 January 1998 / Accepted 26 June 1998

Abstract

Near-infrared images of circumstellar dust shells around five late type stars have been obtained with the ESO - COME-ON+ adaptive optics system in 1994 September. Full angular resolution of the 3.60 m ESO - La Silla telescope was achieved at 1.25, 1.65 and 2.2µm (respectively 0.09, 0.12 and [FORMULA] of angular resolution). A dynamic range of 1000:1 is obtained in the images.

Key words: circumstellar matter – stars: imaging – stars: late type – stars: AGB and post-AGB

* Based on observations collected at the European Southern Observatory, La Silla (Chile)

Send offprint requests to: P. Cruzalèbes

© European Southern Observatory (ESO) 1998

Online publication: September 8, 1998

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