Signatures of planets

Details Signatures of planets Signatures of planets

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998exdu.work...59d&link_type=abstract

Exozodiacal Dust Workshop, p. 59

Astronomy and Astrophysics

Astronomy

6

Zodiacal Dust, Gravitational Effects, Spectral Signatures, Planetary Orbits, Cosmic Background Explorer Satellite, Infrared Astronomy Satellite, Lagrangian Equilibrium Points, Asteroid Belts, Planets, Terrestrial Dust Belt

Scientific paper

The disk of dust in our own solar system, aka the zodiacal cloud, carries clear signatures of the gravitational effects of the planets on the orbits of the dust particles. The signatures that have been identified in the IRAS and COBE data sets include: (1) A warp in the plane of symmetry of the cloud due to the fact that the planets do not have a common orbital plane; (2) A displacement of the Sun from the center of symmetry of the disk due to the fact that the orbits of the planets are eccentric; (3) Bands of dust associated with the breakup of large asteroids; and (4) Rings and clouds of dust produced by trapping of particles in resonances external to the orbit of the Earth. In addition, dust particles are expected to be trapped in resonances external to the orbits of the other planets. We also expect particles to be trapped in 1:1 resonances with the planets and to form Trojan-type clouds of dust that coorbit with the L4 and L5 Lagrangian equilibrium points.

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