SIMBAD references

2007A&A...466..389F - Astronomy and Astrophysics, volume 466, 389-393 (2007/4-4)

Planets of β Pictoris revisited.

FREISTETTER F., KRIVOV A.V. and LOEHNE T.

Abstract (from CDS):

Observations have revealed a large variety of structures (global asymmetries, warps, belts, rings) and dynamical phenomena (``falling-evaporating bodies'' or FEBs, the ``β Pic dust stream'') in the disk of β Pictoris, most of which may indicate the presence of one or more planets orbiting the star. Because planets of β Pic have not been detected by observations yet, we use dynamical simulations to find ``numerical evidence'' for a planetary system. We show that one planet at 12AU with a mass of 2 to 5MJ and an eccentricity ≲0.1 can probably already account for three major features (main warp, two inner belts, FEBs) observed in the β Pic disk. The existence of at least two additional planets at about 25 AU and 45 AU from the star seems likely. We find rather strong upper limits of 0.6MJ and 0.2MJ on the masses of those planets. The same planets could, in principle, also account for the outer rings observed at 500-800AU.

Abstract Copyright:

Journal keyword(s): celestial mechanics - minor planets, asteroids - methods: N-body simulations - stars: individual: β Pictoris - planetary systems - planetary systems: protoplanetary disks

Simbad objects: 3

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