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| 譌･譎� | 2011蟷ｴ06譛�16譌･�域惠) 16:10- |
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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 |
| �ｴ�ｶ莨夊ｭｰ謗･邯� | 莨夊ｭｰ螳､逡ｪ蜿ｷ�� |
| 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) |
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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. --------- |