From brown dwarfs to planets

Details From brown dwarfs to planets From brown dwarfs to planets

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997abos.conf..313m&link_type=abstract

Conference Paper, Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium 161, Publisher: B

Astronomy and Astrophysics

Astronomy

36

Brown Dwarf Stars, Extrasolar Planets, Planetary Systems, Solar Orbits, Jupiter (Planet), Planetary Evolution, Orbit Decay, Extraterrestrial Life

Scientific paper

The burst of discoveries of planets and brown dwarfs during the past year has revealed an unexpected diversity of planetary systems. 51 Pegasi, the first extrasolar planet detected in orbit around a solar-type star, appears to be the prototype of a new family of Jovian planets, the 'Hot Jupiters'. Though the physical mechanisms underlying the orbital decay of protoplanets are already understood, we are far from having a general view of planetary formation and of the diversity of planetary systems. We consider the following: If the orbital decay of protoplanets is sometimes so efficient, what is the frequency of planetary systems like ours, what is the frequency of telluric planets, and what is the limit between planets and brown dwarfs?

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