Date & Time: 2025/April/17 17:00-18:00, Venue: Zoom TV Conference System. This is an informal seminar on the formation of stars and planets. We welcome anyone interested in the subject.
Abstract:
It is now known that a significant fraction of the Milky Way ISM resides in a so-called "dark" phase, usually defined as a mixture of cold, optically thick HI and diffuse molecular hydrogen with densities that are insufficient to form and shield CO. I will present a brief overview of the so-called "Dark ISM" -- where it resides, how much there is, and its characteristic properties. I will then focus on two aspects of structure in the dark gas: (1) AU-scale structures in the cold atomic medium and their possible implications in measuring the fraction of cold/opaque HI, and (2) underlying structure in CO-dark molecular gas that can give rise to very broad, very weak molecular spectral features in OH and HCO+. I will introduce two new observational experiments that may further constrain both of these phenomena.
他、会議報告、速報など、飛び入りも歓迎します。今回もしくは次回以降、話題提供できる方は世話人までメールしていただけましたら幸いです。
Participants: 39, Affiliations:14
Participants list:
ASIAA: PD Yuya Fukuhara
Chiba: P Tomoyuki Hanawa
DIT: A Daisuke Takaishi
Ibaraki: P Munetake Momose
Macquarie/CSIRO: A/Prof Jo Dawson
Kagoshima: D3 Yudai Kobayashi
Kyushu: AP Doris Arzoumanian, D2 Ayumu Shoshi, D1 Mitsuki Omura, B4 Akina Yamamoto, B4 Kaho Hata
Nagoya: P Shu-ichiro Inutsuka, AP Hiroshi Kobayashi, PD Kanta Kitajima, D3 Tomotaka Nishikawa, D2 Izumi Seno, D2 Riona Yamada, D1 Kenshin Onogawa, M2 Shusuke Utsumi, M2 Kota Kobayashi, M2 Hayato Shimizu, M2 Yuji Miko, M1 Akihito Asai, M1 Kanaho Imata, M1 Taisei Shioya, M1 Yuki Tamaki, M1 Kosei Nozaki
NDA: A Kenji Kurosaki
Science Tokyo: PD Ryosuke Tominaga, D2 Ryota Yamamuro, D1 Shuo Guan
Shimane: A Mai Yamashita
Tohoku: PD Daisei Abe
Tokushima: AP Ray Furuya
UTokyo: P Takeru Suzuki, A Satoshi Ohashi, A Shota Notsu, PD Naoto Harada, D2 Yuto Komichi
次回：2025/May/15 17:00-
連絡世話人：冨永遼佑（東京科学大学） tominaga.r.aa[at]m.titech.ac.jp