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2016.9.5-9.11

9月5日(月)13:30~15:00    太陽系小天体セミナー     南棟2階会議室
Sep 5 mon    Solar System Minor Body Seminar  Conference Room, South Bldg.2F  

9月7日(水)10:00~12:00    総研大コロキウム        中央棟(北)1F講義室
Sep 7 wed          SOKENDAI colloquium       Lecture Room

詳細は以下をご覧下さい。

9月5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
9月5日(月曜日)13時30分~15時
場所
南棟2階会議室

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

9月7日(水)

Campus
Mitaka
Seminar
SOKENDAI colloquium
Regularly Scheduled/Sporadic
Regular
Date and time
7 September 2016, 10:00-12:00
Place
Lecture Room

Speaker
Satoshi Tanioka
Affiliation
M1, SOKENDAI (Supervisor; Yoichi Aso)
Title
Towards Direct Measurement of the Coating Thermal Noise using Cryogenic Optical Cavities
Speaker
Hiroyuki Ishikawa
Affiliation
M1, SOKENDAI (Supervisor; Takayuki Kotani)
Title
Metallicity determination of M dwarfs through synthetic spectral fitting in the near-infrared

Abstract
Recently many exoplanet surveys targeting M dwarfs have been planned or conducted around the world. In order to discuss the parameters and population of the planets they will find, our understanding of their host stars are important. The precise parallaxes of the stars measured by Gaia or Hipparcos can be used to derive luminosities and then infer masses and radii, but not metallicities. The most common method to determine the metallicities of FGK-type stars is the synthetic spectral fitting in the optical region. However, M dwarfs have cool atmosphere which enable the formation of molecules with complex absorption bands, and so it is difficult to apply the method. Therefore, most of the studies about the metallicities of M dwarfs have been based on empirical methods so far. Thesedays, some high-resolution near-infrared spectroscopes are constructed and the synthetic spectral fitting begins to become possible in the near-infrared. It is promising method because M dwarfs is brighter and have fewer molecular lines in the near-infrared region than optical. In this presentation I introduce the paper by Onehag et al. (2012) who challenged it for the first time using CRIRES at ESO-VLT. We are planning to apply such method to later type M dwarfs by use of the data of IRD planet survey at Subaru.

Speaker
Yuta Kawamura
Affiliation
M1, SOKENDAI (Supervisor;Hiroshi Matsuo)

Title
Evaluation of 0.8K refrigerator for the development of photon counting detector

Facilitator
-Name:Kotomi Taniguchi

Comment
TV conference system is available connecting from Nobeyama, Hawaii, Mizusawa, and Okayama.

以上

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