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Statistical Properties of Extrasolar Planets

Published online by Cambridge University Press:  26 May 2016

R. Paul Butler ,
Geoffrey W. Marcy ,
Debra A. Fischer ,
Steven S. Vogt ,
C. G. Tinney ,
Hugh R. A. Jones ,
Alan J. Penny  and
Kevin Apps
R. Paul Butler
Affiliation:
Dept. of Terrestrial Magnetism, Carnegie Inst. of Washington, 5241 Broad Branch Rd, NW, Washington DC, 20015-1305 USA
Geoffrey W. Marcy
Affiliation:
Astronomy Dept., University of California, Berkeley, CA 94720 USA
Debra A. Fischer
Affiliation:
Astronomy Dept., University of California, Berkeley, CA 94720 USA
Steven S. Vogt
Affiliation:
UCO/Lick Observatories, University of California, Santa Cruz, CA 95064 USA
C. G. Tinney
Affiliation:
Anglo-Australian Observatory, P.O. Box 296, Epping, NSW 1710, Australia
Hugh R. A. Jones
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK
Alan J. Penny
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, 0×11 0QX, UK
Kevin Apps
Affiliation:
Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QJ, UK

Abstract

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The emerging statistical properties from the first 50 extrasolar planets are startlingly different from the picture that was imagined prior to 1995. About 0.75% of nearby solar type stars harbor jovian planets in 3 to 5 day circular orbits. Another ∽7% of stars have jupiter–mass companions orbiting in eccentric orbits within 3.5 AU. The mass distribution of substellar companions rises abruptly near 5 MJup and continues increasing down to the detection limit near 1 MJup-Orbital eccentricities correlate positively with semimajor axes, even for planets beyond the tidal circularization zone within 0.1 AU, distinguishing planets from binary stars. The planet bearing stars are metal–rich relative to both nearby stars and to the Sun. Analogs of Solar System planets have not been detected to date as they require precision of 3 m s−1 maintained for more than a decade.

Type
Part I: Discovery and study of extrasolar planets - current
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 3 - 11
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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