6月5日（火）13:30～14:30 理論コロキウム 講義室
Jun 5 Tue DTA colloquium Lecture Room
6月5日（火）13:30～15:00 太陽系小天体セミナー 南棟２階会議室
Jun 5 Tue Solar System Minor Body Seminar Conference Room, South Bldg.2F
6月8日（金）16:00～17:00 国立天文台談話会 大セミナー室
Jun 8 Fri NAOJ Seminar Large Seminar Room
詳細は以下をご覧下さい。
6月5日（火）
- Campus
- Mitaka
- Seminar
- DTA colloquium
- Regularly Scheduled/Sporadic
- Regularly Scheduled
- Date and time
- June 5, 2018, 13:30-14:30
- Place
- Lecture room
- Speaker
- Doris Arzoumanian
- Affiliation
- Nagoya University
- Title
- Observed properties of nearby molecular filaments
- Abstract
- The highly filamentary structure of the interstellar medium is impressively revealed by the unprecedented quality and sky coverage of Herschel and Planck images tracing the Galactic cold dust emission. These observations provide the required data to describe in detail the properties of the filamentary structures observed in both quiescent clouds and in star forming regions, where the densest filaments appear to be the main sites of star formation. The omnipresence of filaments in observations as well as in numerical simulations suggests that the formation of filamentary structures is a natural product of the interplay between interstellar shock waves, gravity, and magnetic fields. The detailed description of their observed properties is important to improve our understanding of their formation and evolution process. I will present what we have learned about the properties of the filamentary structures derived from Herschel dust continuum and ground based single dish molecular line observations, and I will discuss the observational constraints on the formation and evolution of molecular filaments.
- Facilitator
- -Name：Tomoya Takiwaki
- Comment
- in English
6月5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
- 6月5日（火曜日）13時30分～15時
- 場所
- 南棟２階会議室
- 講演者
- 土屋智恵
- 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8日（金）
- Campus
- Mitaka
- Seminar
- NAOJ seminar
- Regularly Scheduled/Sporadic
- Scheduled
- Date and time
- Fri 8 June. 16:00~17:00
- Place
- Large Seminar Room
- Speaker
- Ting-Wen Lan
- Affiliation
- Kavli IPMU
- Title
- “From Atoms to Mysterious Molecules: Probing the Diffuse Universe with SDSS Absorption Spectroscopy”
- Abstract
-
The diffuse gas and molecules in and around galaxies are essential ingredients for shaping the Universe that we observe.
In this talk, I will show that we can explore and characterize the properties of the diffuse gas from its absorption line
features imprinted in the spectra of background objects. By combining the SDSS spectroscopic datasets with statistical
techniques, we can reveal gas absorption signals originated from the circumgalactic medium (CGM) of high redshift
galaxies to the interstellar medium of our Milky Way, with strengths across a huge dynamical range over three orders
of magnitude. I will show several results obtained from this exploration, including the physical properties of the CGM,
the relationships between galaxies and their surrounding gas, and the sky distribution of diffuse interstellar bands (DIBs),
signatures of mysterious molecules in our Milky Way. - Facilitator
- -Name： Matsuda, Yuichi