Determination of Masses and Other Properties of Extrasolar Planetary Systems with More than One Planet | Zendy

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Determination of Masses and Other Properties of Extrasolar Planetary Systems with More than One Planet

Author(s) -

Michael Nauenberg

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/338808

Subject(s) - exoplanet , planet , physics , planetary system , planetary mass , astronomy , astrobiology , orbit (dynamics) , doppler effect , astrophysics , star (game theory) , giant planet , limit (mathematics) , aerospace engineering , mathematics , engineering , mathematical analysis

Recent analysis of the Doppler shift oscillations of the light fromextra-solar planetary systems indicate that some of these systems have morethan one large planet. In this case it has been shown that the masses of theseplanets can be determined without the familiar ambiguity due to the unknowninclination angle of the plane of the orbit of the central star provided,however, that its mass is known. A method is presented here which determinesalso a lower limit to the mass of this star from these observations. As anillustration, our method is applied to the Keck and Lick data for GJ876.Comment: 10 pages, 17 figures. Accepted for publication in Astrophysical Journa

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