11月26日(水)10:00~12:00 総研大コロキウム 中央棟(北)1F講義室
Nov 26 Wed SOKENDAI colloquium Lecture Room
11月26日(水)14:10~15:10 理論コロキウム 中央棟(北)1F講義室
Nov 26 Wed DTA Colloquium Lecture Room
11月28日(金)16:00~17:00 国立天文台談話会 大セミナー室
Nov 28 Fri NAOJ Seminar Large Seminar Room
詳細は以下をご覧下さい。
11月26日(水)
- Campus
- Mitaka
- Seminar Name
- SOKENDAI colloquium
- Regular/Irregular
- Regular
- Date
- 10:00-12:00,11/26, 2014
- Place
- Lecture Room
- Speaker
- Taiki Suzuki
- Affiliation
- D1, SOKENDAI, Mitaka(supervisor: Masatoshi Ohishi)
- Title
- Formation Process of Glycine Precursor, CH2NH
- Speaker
- Nagisa Shino
- Affiliation
- D3, SOKENDAI, Mitaka(supervisor: Mareki Honma)
- Title
- TBD
- Speaker
- Cheulhong Min
- Affiliation
- D3, SOKENDAI, Mitaka(supervisor: Mareki Honma)
- Title
- SiO maser observations for the symbiotic star R Aquarii (R Aqr)
- Organizer
- Name : Taiki Suzuki
- Comment
- TV conference system is available connecting from Nobeyama, Hawaii,Mizusawa, and Okayama.
11月26日(水)
- キャンパス
- 三鷹
- セミナー名
- 理論コロキウム
- 臨時・定例の別
- 定例
- 日時
- 11月26日(水曜日) 14時10分~15時10分
- 場所
- 講義室
- 講演者
- Brasser, Ramon
- 所属
- 東京工業大学 地球生命研究所
- タイトル
- Tilting Saturn without tilting Jupiter: Constraints on giant planet migration
- Abstract
- The migration and encounter histories of the giant planets in our Solar System can be constrained by the obliquities of Jupiter and Saturn. We have performed many N-body simulations of the evolution of the outer Solar System containing the giant planets and a disc of planetesimals to study the expected final obliquity distribution of the gas giants. The initial conditions resembled those of the smooth migration model of Hahn & Malhotra, the resonant Nice model or Morbidelli et al. and two models with five giant planets in resonance initially. We find that all models have a similar probability to reproduce the current orbital properties of the giant planets while only two of these are able to reproduce the current obliquities of the gas giants, though with a small probability.
- 連絡先
- 名前: 長谷川 靖紘
11月28日(金)
- キャンパス
- 三鷹
- セミナー名
- 国立天文台談話会
- 臨時・定例の別
- 定例
- 日時
- 11月28日(金) 16:00-17:00
- 場所
- 大セミナー室
- 講演者
- Zheng Cai
- 所属
- University of Arizona
- タイトル
- ” MApping the Most Massive Overdensity Through Hydrogen (MAMMOTH) ”
- Abstract
- We have undertaken a survey of the most massive galaxy structures in the early universe at z=2-4, traced by regions of the highest optical depth from IGM Lyα absorption over large scale of 10-30 Mpc. Our cosmological simulations show a strong correlation between the optical depth of intergalactic Ly-alpha absorption and mass overdensities at scales of 10- 40 Mpc. Based on our simulations and MMT observations, we have developed technique to search for the largest IGM Lyα absorption systems. By examining the absorption spectra of ?60,000 quasar sight-lines in the SDSS-III at z = 2.32 ± 0.04 we have identified the first field that traced by group of IGM Lyα absorbers, which then can be probed in Ly-alpha emission with our custom narrowband filter. The overdense nature of this field is further suggested by a high concentration of quasars at the same redshift. Our KPNO-4m/MOSAIC narrowband imaging and follow-up LBT/MODS spectroscopy have successfully revealed the large-scale galaxy overdensities in this field. Both our simulation and early observational results suggest the largest IGM Ly-alpha absorption systems could be used as a powerful way of tracing most massive galaxy structures in the early universe. In this talk, I will also highlight the great possibilities of using ambitious HSC and future PFS survey on IGM and large-scale structure studies.
- 連絡先
- 名前:鈴木 竜二