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2014.11.24-11.30

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

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