A stream of particles from the begin {equation}ta Pictoris disc: A possible ejection mechanism

Details A stream of particles from the begin {equation}ta Pictoris disc: A possible ejection mechanism A stream of particles from the begin {equation}ta Pictoris disc: A possible ejection mechanism

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...402l...5k&link_type=abstract

Astronomy and Astrophysics, v.402, p.L5-L8 (2003)

Astronomy and Astrophysics

Astrophysics

4

Circumstellar Matter, Meteors, Meteoroids, Planetary Systems, Stars: Individual: Beta Pic

Scientific paper

Recently, a stream of particles originating from the direction of begin {equation}ta Pictoris, a young main sequence star surrounded by a dust disc, has been reported (Baggaley \cite{baggaley-2000}). Standard mechanisms of particle ejection from a disc fail to reproduce the properties of this stream. We find that scattering by a giant proto-planet with properties taken from the literature is consistent with the observations. The fact that a straightforward ejection mechanism reproduces the data supports the identification of the particle stream's source with beta Pic. Our work also indicates that protoplanetary dust discs form a potentially rich source of large interstellar grains, as widely detected in the Solar System.

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