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Astron. Astrophys. 339, 477-482 (1998)

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Dust distribution in radiation pressure outflow

Application to the BD+31°643 disk

A. Lecavelier des Etangs 1, 2, A. Vidal-Madjar 2 and R. Ferlet 2

1 NCRA, TATA Institute of Fundamental Research, Post Bag 3, Ganeshkhind, Pune University Campus, Pune 411 007, India
2 Institut d'Astrophysique de Paris, CNRS, 98bis Boulevard Arago, F-75014 Paris, France

Received 8 June 1998 / Accepted 8 September 1998


The radial distribution of dust has been calculated in outflows driven by radiation pressure in which the gas drag is taken into account. It is shown that the dust distribution in the newly discovered candidate disk around BD+31°643 can be explained by this simple model, provided that the ambient gas of the surrounding cluster IC 348 has a density [FORMULA]cm-3. The dust is probably produced within 2300 AU from the central binary star.

Key words: stars: individual: BD+ 31o 643 – circumstellar matter

Send offprint requests to: A. Lecavelier des Etangs

© European Southern Observatory (ESO) 1998

Online publication: October 21, 1998