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Where are the massive close-in extrasolar planets?

Pätzold, M. and Rauer, H. (2002) Where are the massive close-in extrasolar planets? Astrophysical Journal, 568 (2, Part 2), L117-L120.

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Abstract

About 68 extrasolar planets around main-sequence stars of spectral types F, G and K have been discovered up to now. The minimum masses (Mp sin i) of these planets are ranging from fractions of a Jupiter mass (MJ) to 15 MJ. The semimajor axes of the planetary orbits range from 0,04 out to 4 AU. At large semimajor axes, only massive planets have been discovered because of the observational selection effects. For semimajor axes less the 0.1 AU, however, there seems to be an observational lack of very massive planets (>1 MJ). Here we explain the absence of massive planets ath these distances by tidal interactions between planets and their central star that lead to a rapid decay of a planetary orbit toward the Roche zone of the star within a short timescale. A higher metallicity of planet-bearing stars and the recent discovery of a 6Li excess of a G0 star might further indicate that planets can indeed get lost in their host stars.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Where are the massive close-in extrasolar planets?
Authors:
AuthorsInstitution or Email of Authors
Pätzold, M.Institut für Geophysik und Meteorologie, Universität zu Köln, Cologne, Germany
Rauer, H.UNSPECIFIED
Date:2002
Journal or Publication Title:Astrophysical Journal
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:568
Page Range:L117-L120
Status:Published
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institut für Weltraumsensorik und Planetenerkundung
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 19:18

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