Date & Time: 2022/April/7 (Thu) 17:00-18:30, Venue: Zoom TV Conference System. This is an informal seminar on the formation of stars and planets. We welcome anyone interested in the subject.

Title: Revealing the Star Formation History of our Solar Neighborhood: Supernova-Driven Star Formation on the Surface of the Local Bubble

Speaker: Catherine Zucker（ Center for Astrophysics, Harvard & Smithsonian）

Abstract:

Given its proximity, the solar neighborhood has long been considered a fundamental laboratory for understanding how stars form. However, until very recently, this understanding was largely based on static “plane of the sky” views, making it extraordinarily challenging to build a 3D physical picture of dense gas and young stars using 2D integrated quantities. In this talk, I will discuss how new 3D spatial and dynamical constraints from Gaia have transformed our understanding of star formation near the Sun. I will show how essentially all nearby star-forming complexes lie on the surface of the Local Bubble, and that their young stars show outward expansion perpendicular to the bubble’s surface. Using these young stars’ motions to reconstruct the star formation history of our solar neighborhood, I will explain how a set of supernova explosions beginning 14 Myr ago powered the expansion of the Local Bubble. This expansion swept up the ambient interstellar medium into an extended shell that has now fragmented and collapsed into the most prominent nearby star-forming complexes, in turn providing strong observational evidence for supernova-driven star formation. I will conclude by discussing the relationship between the Local Bubble and other recently discovered structures (the Radcliffe Wave and the Perseus-Taurus Supershell), which together provide new context for understanding triggered star formation in the larger galactic ecosystem.

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: 61, Affiliations: 25

Participants list:

MPIA: P Andreas BURKERT

Harvard: P Alyssa GOODMAN, PD Catherine ZUCKER

UVienna: P João ALVES

ASIAA: PD Jinshi SAI, PD Masayuki YAMAGUCHI

Tohoku: PD Yuki TANAKA

Ibaraki: P Munetake MOMOSE, P Toru TSURIBE

Hosei: P Tomoaki MATSUMOTO

JAMSTEC: PD Sota ARAKAWA

Kogakuin: AP Takayuki MUTO

NAOJ: A Kazunari IWASAKI, PD Doris ARZOUMANIAN, PD Yuji MATSUMOTO, PD Masato KOBAYASHI

NAOJ/SOKENDAI: M2 Tomohiro YOSHIDA

RIKEN: PD Shota NOTSU, PD Ryosuke TOMINAGA

CHIBA: P Tomoyuki HANAWA

UTokyo: P Takeru SUZUKI, A Yasuo DOI, PD Gianni CATALDI, PD Shigo HIRANO, D3 Hiroto MITANI, D1 Kaho MORII, D1 Yoshihide YAMATO, M1 Yuto KOMICHI, B4 Suguru TAKEBAYASHI

Nagoya (Ta-lab): P Shu-ichiro INUTSUKA, A Hiroshi KOBAYASHI, PD Valeska VALDIVIA, PD Kenji KUROSAKI, PD Jiro SHIMODA, PD Gabriel RIGON, PD Yoshiaki MISUGI, D3 Kensuke KAKIUCHI, D3 Daisei ABE, D3 Ryunosuke MAEDA, D2 Leonardo VASCONCELLOS, D1 Kanta KITAJIMA, M2 Yuta SAKURAI, M2 Ryushi MIYAYAMA, M2 Tomotaka NISHIKAWA

Nagoya (Uir-lab): AP Taro MATSUO

Nagoya (A-lab): AP Kengo TACHIHARA

Shiga Med: AP Kazutaka MOTOYAMA

Kyoto: A Yuri FUJII

Osaka: P Kentaro TERADA, A Takayoshi SANO

Kyushu: D2 Asako SATO, D2 Naoto HARADA, M2 Takashi HAYAKAWA, M1 Ayumu SHOSHI, M1 HaoHai YANG, B4 Mitsuki OMURA

Kyushu Kyoritsu: P Yoshito SHIMAJIRI

Kurume: A Masanobu KUNITOMO

Kagoshima: P Shigehisa TAKAKUWA, D2 Daisuke TAKAISHI, M2 Yudai KOBAYASH

次回：6/23(木) 17:30-

連絡世話人：黒崎 健二（名古屋大学） kurosaki.k[at]nagoya-u.jp