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2019.10.28-2019.11.1

10月29日(火)13:30~15:00 太陽系小天体セミナー  南棟2階会議室
Oct 29 Tue          Solar System Minor Body Seminar Conference Room, South Bldg.2F

10月30日(水)10:30~12:00 総研大コロキウム    講義室
Oct 29 Tue          SOKENDAI colloquium   Lecture Room

11月1日(金)16:00~17:00 談話会  大セミナー室  
Nov 1 Fri         NAOJ seminar  Large Seminar Room

詳細は以下をご覧下さい。

10月29日(火)

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
10月29日(火曜日)13時30分~15時
場所
南棟2階会議室
講演者
樋口あや
所属
天文データセンター
タイトル
Toward understanding origin of gas in debris disks
Abstract
Debris disks have optically thin dust components around main sequence stars. Recently, several debris disks harboring a gas componenthave been discovered in survey observations at optical, infrared, and radio wavelengths, and its origin has been discussed in terms of the evolution of protoplanetary disks and the formation of planetary bodies. In fact, many debris disks are known to reveal submillimeter-wave CO emission, e.g., 49 Ceti, β Pictoris, and 15 others or more. In addition to the CO emission, the submillimeter-wave [C I] emission has been observed toward a few debris disks. I will present recent observations of gaseous debris disks and also present our result of the first subarcsecond images of 49 Ceti in the [C I] 3P1?3P0 emission and the 614 μm dust continuum emission observed with ALMA.

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

10月30日(水)

Campus
Mitaka
Seminar
SOKENDAI colloquium
Regularly Scheduled/Sporadic
Regular
Date and time
October 30th, 2019, 10:30 -12:00

Place
Lecture Room

Speaker
Yoshiki Hatta
Affiliation
SOKENDAI 4th year (D2)(Supervisor: Takashi Sekii, Hirohisa Hara, and Othman Benomar )
Title
Progress report on modeling KIC 11145123

Facilitator
-Name: Kei Ito

10月30日(水)

Campus
Mitaka
Seminar
NAOJ seminar
Regularly Scheduled/Sporadic
Regular
Date and time
November 1st, 2019, 16:00 -17:00
Place
Large Seminar Room
Speaker
Nienke van der Marel
Affiliation
NRC Herzberg Astronomy and Astrophysics (Canada)
Title
A look into the birth cradles of planets with ALMA: signatures of planet formation in protoplanetary disks
Abstract
Successful exoplanet surveys in the last decade have revealed
that planets are ubiquitous throughout the Milky Way, and show a large
diversity in mass, location and composition. At the same time, new
facilities such as the Atacama Large Millimeter/submillimeter Array (ALMA)
and optical/infrared facilities including Subaru/SCExAO and VLT/SPHERE have
provided us with sharper images than ever before of protoplanetary disks
around young stars, the birth cradles of planets. The high spatial
resolution has revealed unexpected structures in disks, such as rings,
gaps, asymmetries and spiral arms, and the enormous jump in sensitivity has
provided the tools for both large, statistically relevant surveys and deep,
sensitive molecular line studies. These observations have revolutionized
our view of planet formation, disk formation and disk evolution, bringing
model simulations and observations closer to the same level of detail. In
this talk I will discuss the current transformation in our understanding of
planet formation and the next steps and challenges in connecting theory
with exoplanet demographics and protoplanetary disk observations.

Facilitator
-Name: Hamana, Takashi

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