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Astron. Astrophys. 356, 691-694 (2000)

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Research Note

Possible emission lines from the gaseous [FORMULA] Pictoris disk

A. Lecavelier des Etangs 1, L.M. Hobbs 2, A. Vidal-Madjar 1, H. Beust 3, P.D. Feldman 4, R. Ferlet 1, A.-M. Lagrange 3, W. Moos 4 and M. McGrath 5

1 Institut d'Astrophysique de Paris, CNRS, 98 bis Boulevard Arago, 75014 Paris, France
2 University of Chicago, Yerkes Observatory, Williams Bay, WI 53191-0258, USA
3 Université J. Fourier, Laboratoire d'Astrophysique, B.P. 53, 38041 Grenoble Cedex 9, France
4 Johns Hopkins University, Department of Physics and Astronomy, Baltimore, MD 21218, USA
5 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA

Received 23 March 1999 / Accepted 4 February 2000

Abstract

We present the results of exploratory HST observations to detect the emission lines of ions in the [FORMULA] Pictoris disk with the spectrograph slit placed off the star. Possible emission lines from Fe II have been detected at [FORMULA]erg cm-2 s-1 at 0.5" from [FORMULA] Pictoris, which would suggest a total Fe II density of [FORMULA]cm-3 at 10 AU. This detection needs confirmation. If real, it requires a large production rate of gas and dust equivalent to the total disruption of ten bodies 30 kilometers in radius per year.

Key words: stars: individual: fi Pic – stars: circumstellar matter – stars: planetary systems – methods: data analysis

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© European Southern Observatory (ESO) 2000

Online publication: April 10, 2000
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