Secular apsidal configuration of non-resonant exoplanetary systems

    Research output: Contribution to journalArticle

    Abstract

    Using a high-order (order 12) expansion of the perturbative potential in powers of eccentricities [Libert, A.-S., Henrard, J., 2005. Celest. Mech. Dynam. Astron. 93, 187-200], we study the secular effects of two coplanar planets which are not in mean motion resonances. The main results concern eccentricity variations, oscillation amplitude of the angular difference of the apsidal lines (Δπ{variant}) and frequency of such an oscillation. We show that this analytical approach describes correctly the behaviour of most of the exosystems and underlines the known limitations of the linear Laplace-Lagrange theory. Apsidal configuration of υ Andromedae, HD 168443, HD 169830, HD 38529, HD 74156 and HD 12661 are examined. We also point out the great sensitivity of the υ Andromedae system to the initial values ( e1 ( 0 ), e2 ( 0 ) or Δ π{variant} ( 0 )).

    Original languageEnglish
    Pages (from-to)186-192
    Number of pages7
    JournalIcarus
    Volume183
    Issue number1
    DOIs
    Publication statusPublished - 1 Jul 2006

    Keywords

    • Celestial mechanics
    • Extrasolar planets
    • Planetary dynamics
    • Resonances

    Fingerprint Dive into the research topics of 'Secular apsidal configuration of non-resonant exoplanetary systems'. Together they form a unique fingerprint.

  • Projects

    Cite this