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2016.6.27-7.3

6月27日(月)13:30~15:00   太陽系小天体セミナー   南棟2階会議室
Jun 27 mon           Solar System Minor Body Seminar   Conference Room, South Bldg.2F   

6月29日(水)10:00~12:00   総研大コロキウム 中央棟(北)1F講義室 
Jun 29 wed    SOKENDAI colloquium    Lecture Room

6月29日(水)13:30~14:30   理論コロキウム    コスモス会館会議室
Jun 29 wed    DTA colloquium    Conference Room, Cosmos Lodge

6月30日(木)15:00~16:00   VLBIコロキウム    中央棟(南)2階VLBIセミナー室
Jun 30 thu  VLBI Colloquium   VLBI Seminar Room, Main Bldg. (South) 2F

詳細は以下をご覧下さい。

6月27日(月)

キャンパス
三鷹
セミナー名
太陽系小天体セミナー
定例・臨時の別
定例
日時
6月27日(月曜日)13時30分~15時
場所
南棟2階会議室
講演者
藤原康徳・蓮尾隆一

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

6月29日(水)

Campus
Mitaka
Seminar
SOKENDAI colloquium
Regularly Scheduled/Sporadic
Regular
Date and time
29June 2016, 10:00-12:00

Place
Lecture Room
Speaker
Speaker 1 Shogo Ishikawa
Affiliation
SOKENDAI
Title
TBD
Speaker
Speaker 2 Masahiro Onitsuka
Affiliation
SOKENDAI
Title
TBD
Speaker
Speaker 3 Kotomi Taniguchi
Affiliation
D2, SOKENDAI (Supervisor; Masao Saito)
Title
13C isotopic fractionation of HC3N in star forming regions
Abstract:I will talk about observations with the Nobeyama 45-m telescope during this observational season. We investigate 13C isotopic fractionation of HC3N and discuss its main formation mechanisms in L1527 and G28.28-0.36.

Facilitator
-Name:Kotomi Taniguchi
Comment
TV conference system is available connecting from Nobeyama, Hawaii, Mizusawa, and Okayama.

6月29日(水)

Campus
Mitaka
Seminar
DTA colloquium
Regularly Scheduled/Sporadic
Regularly Scheduled Date and time:29 June 2016, 13:30-14:30
Place
Conference Room, Cosmos Lodge
Speaker
Carmen Adriana Martinez Barbosa
Affiliation
Leiden Observatory, University of Leiden
Title
Tracing the journey of the Sun and the solar siblings through the Milky Way
Abstract
The products of radioactive elements found in the meteorite fossil record and the high eccentricities of objects located in the outer regions of the Solar System, suggest that the Sun was born in an open cluster 4.6 Gyr ago. Such an open cluster however, was quickly destroyed by the intense gravitational field of the Galaxy. As a conse- quence, the stars that were born together with the Sun, the so-called solar siblings, might be currently dispersed all over the Galactic disk. In this talk I will explain how open cluster simulations can help us in predicting the current phase-space coordinates of the solar siblings. These simulations include the gravitational forces within the cluster, the effects of stellar evolution on the cluster population and the gravitational force due to the Milky Way. The result of these sim- ulations will serve as a guide to search for solar siblings in future surveys such as the Gaia mission and GALAH. The identification of solar siblings is of crucial importance to understand the environment where the Solar system was formed and the place in the Galaxy where the Sun was born.
Facilitator
-Name:Tomoya Takiwaki

Comment
in English

6月30日(木)

キャンパス
三鷹
セミナー名
VLBIコロキウム
定例・臨時の別
定例
日時
6月30日(木曜日)15時 ~16時
場所
中央棟(南)2階VLBIセミナー室
講演者
Nagisa Shino
所属
SOKENDAI (Mizusawa VLBI Observatory)
タイトル
Investigating methanol maser observation of massive star forming region
IRAS18144-1723 and IRAS20198+3716
Abstract
The purpose of this study is to define the formation process of massive stars by the observation of methanol masers. VLBI observations using the methanol maser is effective tool to understand the massive star formation. There are previous studies that performed surveys of 6.7GHz and 44GHz methanol masers, although the samples are small. Therefore, we observed 6.7GHz methanol masers using JVN, and analyzed 44GHz methanol masers using VLA archive data.

We made the spatial distribution map of 6.7GHz methanol masers and 44GHz methanol masers of 4 sources. In this presentation, I will talk about
IRAS18144-1723 and IRAS20198+3716. IRAS18144-1723 has 5spots of 6.7GHz methanol masers and 10 spots of 44GHz methanol masers. IRAS20198+3716 has 11spots of 6.7GHz methanol masers and 10 spots of 44GHz methanol masers.

I argue emission positions of 6.7GHz methanol masers and spatial distribution map of 44GHz methanol masers of IRAS18144-1723 and
IRAS20198+3716.

連絡先
-名前:倉持一輝

備考
英語、テレビ参加可

以上

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