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2013.7.1-7.7

7月1日(月)13:30~15:00   太陽系小天体セミナー   南棟2F 会議室
July 1 Mon Solar System Minor Body Seminar Conference Room, South Bldg. 2F

7月3日(水)10:00~12:00   総研大コロキウム   中央棟(北)1F 講義室
July 3 Wed   SOKENDAI Colloquium   Lecture Room

7月5日(金)16:00~17:00   国立天文台談話会   大セミナー室
July 5 Fri   NAOJ Seminar   Large Seminar Room, Subaru Bldg. 1F

7月1日(月)

キャンパス
三鷹
セミナー名
太陽系小天体セミナー
臨時・定例の別
定例
日時
7月1日(月曜日)13:30~15:00
場所
南棟2階会議室
講演者
古荘玲子
タイトル
研究分野レビュー(彗星)
連絡先
 名前:渡部潤一
備考
テレビ会議またはスカイプによる参加も可

7月3日(水)

Campus
Mitaka
Seminar Name
SOKENDAI colloquium
Regular/Irregular
Regular
Date
10:00-12:00, July 3, 2013
Place
Lecture Room
Speaker 1
Anjali John K
D2, SOKENDAI, Mitaka(supervisor : Yoshinori Suematsu)

Title
Temporal evolution of the Sun’s Polar Magnetic Patches as observedwith Hinode
Speaker 2
Onitsuka Masahiro
M2, SOKENDAI, Mitaka(supervisor : Tomonori Usuda)

Title
Detection of Carbon Monoxide and Water Absorption Lines in an Exoplanet Atmosphere
Speaker 3
Yang Yi
M1, SOKENDAI, Mitaka(supervisor : Saeko S. Hayashi)

Title
Detection of Carbon Monoxide and Water Absorption Lines in an Exoplanet Atmosphere
Organizer
Name : Ayumu Matsuzawa
Comment
TV conference system is available connecting from Nobeyama, Hawaii,
Mizusawa, and Okayama

7月5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
7月5日(金) 16:00-17:00
場所
大セミナー室
講演者
細川隆史
所属
東京大学大学院理学系研究科物理学専攻
タイトル
「High-mass Star Formation in the Early Universe」
Abstract
The first stars fundamentally transformed the early universe by emitting the first light and by producing the first heavy elements. These effects were predestinated by the mass distribution of the first stars, which is thought to be fixed by a complex interplay of gas accretion and protostellar radiation. In this talk, I present our recent work of radiation-hydrodynamics simulations and stellar evolution calculations that follow the growth of a primordial protostar. I show that,in the normal cases of the first star formation, the strong stellar UV feedback finally shuts off the mass accretion and limit the final stellar mass. We now predict a mass distribution of more than 100 first stars, which ranges from 10s to 100s Msun depending on physical properties of star-forming clouds. Although the formation of extremely massive stars (>> 1000 Msun) might be rare even in the early universe, black holes left after their deaths could be massive seeds of supermassive black holes observed in the distant universe. I also discuss a mode of forming the very massive (or supermassive) stars via very rapid mass accretion.
連絡先
名前:鈴木 竜二

以上

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