Predicting the Configuration of Planetary System: KOI-152 Observed by Kepler

Abstract

The recent Kepler discovery of KOI-152 reveals a system of three hot super-Earth candidates that are in or near a 4:2:1 mean motion resonance. It is unlikely that they formed in situ, the planets probably underwent orbital migration during the formation and evolution process. The small semimajor axes of the three planets suggest that migration stopped at the inner edge of the primordial gas disk. In this paper we focus on the influence of migration halting mechanisms, including migration "dead zones", and inner truncation by the stellar magnetic field. We show that the stellar accretion rate, stellar magnetic field and the speed of migration in the proto-planetary disk are the main factors affecting the final configuration of KOI-152. Our simulations suggest that three planets may be around a star with low star accretion rate or with high magnetic field. On the other hand, slow type I migration, which decreases to one tenth of the linear analysis results, favors forming the configuration of KOI-152. Under such formation scenario, the planets in the system are not massive enough to open gaps in the gas disk. The upper limit of the planetary masses are estimated to be about $15,19$, and $24M_{\oplus }$, respectively. Our results are also indicative of the near Laplacian configurations that are quite common in planetary systems.

11 pages, 8 figures, accepted for publication in ApJ

References in corpus (11)

• Toward a Deterministic Model of Planetary Formation V. Accumulation Near the Ice Line
• Migration and the formation of systems of hot super-Earths and Neptunes
• Models of the in situ formation of detected extrasolar giant planets
• Accretion in the Rho-Oph pre-main sequence stars
• Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
• On the corotation torque in a radiatively inefficient disk
• On disc protoplanet interactions in a non-barotropic disc with thermal diffusion
• Assembling the Building Blocks of Giant Planets around Intermediate Mass Stars
• Five Kepler target stars that show multiple transiting exoplanet candidates
• The Dynamical Simulations of the Planets Orbiting GJ 876
• The Librating Companions in HD 37124, HD 12661, HD 82943, 47 Uma and GJ 876: Alignment or Antialignment?

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