言語種別 英語 発行・発表の年月 2017/06 形態種別 学術雑誌 査読 査読あり 標題 ALMA View of the Galactic Center Minispiral: Ionized Gas Flows around Sagittarius A∗   ALMA View of the Galactic Center Minispiral: Ionized Gas Flows around Sagittarius A∗ 執筆形態 共著 掲載誌名 The Astrophysical Journal 掲載区分 国外 巻・号・頁 842(2),pp.15 著者・共著者 Tsuboi, Masato; Kitamura, Yoshimi; Uehara, Kenta; Miyawaki, Ryosuke; Tsutsumi, Takahiro; Miyazaki, Atsushi; Miyoshi, Makoto   Tsuboi, Masato; Kitamura, Yoshimi; Uehara, Kenta; Miyawaki, Ryosuke; Tsutsumi, Takahiro; Miyazaki, Atsushi; Miyoshi, Makoto 概要 We have observed the “Galactic center minispiral (GCMS)” in the H42α recombination line as a part of the first large-scale mosaic observation in the Sagittarius A complex using Atacama Millimeter/submillimeter Array (ALMA). We revealed the kinematics of the ionized gas streamers of the GCMS. We found that the ionized gas streamers of the Northern Arm (NA) and Eastern Arm (EA) in their outer regions somewhat deviate from the Keplerian orbits that were derived previously from the trajectories in the inner regions.