タケカワ シュンヤ   Takekawa Shunya
  竹川 俊也
   所属   神奈川大学  工学部 物理学教室
   職種   助教
言語種別 英語
発行・発表の年月 2015/12
形態種別 その他論文
標題 Deep Mapping Observations of the Galactic Circumnuclear Disk with Two Single-dish Telescopes
執筆形態 共著
掲載誌名 ASP Conference Series
掲載区分国外
巻・号・頁 499,pp.171-171
著者・共著者 Takekawa, S,Oka, T,Tanaka, K
概要 The circumnuclear disk (CND) is a potential reservoir for material accreting into the central parsec of our Galaxy. Two giant molecular clouds (GMCs; +20 km s-1 and +50 km s-1 clouds) are adjacent to the CND. Although several authors have suggested the physical connection between these GMCs and the CND, no compelling evidence of physical connections has been found to date. Recently we have performed deep OTF mapping observations of the CND with the NRO 45 m radio telescope and the ASTE 10 m telescope in the HCN J=1-0, SiO J=2-1, CS J=2-1, HCO+ J=4-3 lines, etc.We discovered a bridge in the l-b-V space which connects the CND and the +20 km s-1 cloud. We interpret this as a gas streamer from outside to the CND.