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蝣エ謇 | 譚ア莠ャ蟾・讌ュ螟ァ蟄ヲ 遏ウ蟾晏床6蜿キ鬢ィ 404B |
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繧ケ繧ア繧ク繝・繝シ繝ォ | 16:10-17:10 逕コ莠墓ク壹&繧�(逾樊虻螟ァ蟄ヲ) 17:30-18:30 Ji-Lin Zhou縺輔s�亥漉莠ャ螟ァ蟄ヲ�� (Skype蜿ょ刈) |
Experimental study on static and impact strength of sintered agglomerates
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Planet Formation around Single and Binary Stars
Ji-Lin Zhou縺輔s�亥漉莠ャ螟ァ蟄ヲ�� --------- More than 550 exoplanets have been detected during the past years, mainly by Doppler radial velocity measurement and photometric transit techniques. Moreover, 1235 candidates were announced through transit survey by Kepler mission. In this presentation, we will address three topics in modeling the planet formation: (1) formation of hot super Earths; (2) formation of orbital architectures in multiple planet systems, and (3) planet formation around binary stars. We will show that, under type I migration, hot super Earth can be formed, but with a significant reduction of migration speed; N-body simulation can reproduce most orbital signatures of the observed exoplanets, but the planet desert of 10-100 Earth masses remains. In binary systems, a fast decay or a slight inclined disk around the main star helps to reduce the relative speed among planetesimals, which results in an accretion-friendly environment for planet formation. In a highly inclined binary system, disk self gravity can be suppressed within a critical location, and the presence of disk helps to reduce the critical inclination (~40 deg) that Kozai effect occurred. --------- |