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Astron. Astrophys. 329, L53-L56 (1998)

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Letter to the Editor

A Vega-like disk associated with the planetary system of [FORMULA]  Cnc *

C. Dominik 1, R.J. Laureijs 2, M. Jourdain de Muizon 3, 4 and H.J. Habing 1

1 Sterrewacht, Leiden, P.O. Box 9513, 2300 RA Leiden, The Netherlands
2 ISO Science Operations Center, Astrophysics Division of ESA, Vilspa, P.O. Box 50727, E-28080 Madrid, Spain
3 DESPA, Observatoire de Paris, F-92190 Meudon, France
4 LAEFF-INTA, ESA Vilspa, P.O. Box 50727, E-28080 Madrid, Spain

Received 2 October 1997 / Accepted 24 October 1997


The star [FORMULA]  Cnc is among the first 10 stars which have been shown to host a planet. Following the discovery of the planet in 1996 we have obtained ISO observations in May 1996. The observations show that [FORMULA]  Cnc has a 25µm flux consistent (within the errors) with photospheric origin, and an excess of 170 [FORMULA] 30 mJy at 60µm. We interprete this excess as emission from dust grains in a Vega-like disk located approximately 60 AU from the star, containing at least [FORMULA] of material.

Key words: stars: planetary systems – stars: general – stars: individual: ae1 Cnc – Infrared: stars

* Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands and the United Kingdom) and with the participation of ISAS and NASA.

Send offprint requests to: C. Dominik

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© European Southern Observatory (ESO) 1998

Online publication: December 16, 1997