Observational study of the formation and the evolution of dense cores by 25 SIS Focal Plane Array Receiver System

25 SIS焦平面阵列接收系统对致密核心形成和演化的观测研究

• 批准号: 10640237
• 负责人: SUNADA Kazuyoshi
• 金额: $ 2.05万
• 依托单位: National Astronomical Observatory, Japan
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10640237/
• 关键词: Radio Astronomy; Molecular Clouds; Star Formation; Hierarchical Structure; SIS Receiver; Dense Cores; Focal Plane Array Receiver; 画像解析; データ解析; IDL

The goal of this project is to understand the formation and the evolution of dense cores, using the new instruments BEARS, which is SIS 25-BEam Array Receiver System. During the term of our project, we were developing and making an effort to improve the performance of this receiver system. This receiver opens for the common use observation from 2000. More than half of the total observing time, this receiver was used.In order to investigate the formation and the evolution of dense cores, we started the observation. First of all, we observed the diffuse molecular clouds, where are thought to be young molecular clouds. These clouds are sight of the formation of dense cores. Thus, the observations of these clouds tell us the formation mechanism of dense cores.From the observations, we found the structure of the diffuse cloud is very complicated and they have already had high density regions. We also found the evidence how to develop such a complicated structures. Observation is now on going to be able to discuss statistically.

该项目的目标是了解致密岩心的形成和演化，使用新仪器BEARS，这是SIS 25波束阵列接收系统。在我们的项目期间，我们正在开发并努力提高该接收机系统的性能。该接收器从2000年开始开放供通用观测。为了研究致密核的形成和演化，我们开始了观测。首先，我们观察到了弥漫的分子云，这里被认为是年轻的分子云。这些云是致密核心形成的景象。因此，对这些云的观测告诉了我们致密核的形成机制，从观测中我们发现，弥漫云的结构非常复杂，已经有了高密度区。我们也发现了如何发展这种复杂结构的证据。观察现在将能够讨论统计。

项目成果

S.Inutsuka & Y.Imaeda: "Reformulation of Smoothed Particle Hydrodynamics for Astrophysica Fluid dynamics"Computational Fluid Dynamics Journal. Vol.9, No.4 (in press). (2001)

犬冢

C.Yamaguchi et al.: "Design of the Focal Plane Array Receiver for the NRO 45-m Telescope"Radio Telescope, Proceeding of SPIE. 4015. 614-623 (2000)

C.Yamaguchi 等人：“NRO 45 米望远镜焦平面阵列接收器的设计”射电望远镜，SPIE 论文集。

T.Kamazaki et al.: "Search for Protostars in the P Ophiuchi Star Forming Region with the ISO PHOT" Star Formation with the Infrared Space Observatory ASP Conference Series. (J,L,Yun,and R.Liseaueds). 132. 370-373 (1998)

T.Kamazaki 等人：“利用 ISO PHOT 在 P Ophiuchi 恒星形成区域中搜索原恒星”与红外空间天文台 ASP 会议系列的恒星形成。

K.Sunada et al.: "BEARS-SIS 25-BEam Array Receiver System for the NRO 45-mtelescope"Radio Telescopes, Proceeding of SPIE. 4015. 237-246 (2000)

K.Sunada 等人：“NRO 45 米望远镜的 BEARS-SIS 25 束阵列接收系统”射电望远镜，SPIE 会议录。

M. Saito: "Dispersal of Dense Cores around Young Stellar Objects in Taurus"Proceeding of Star Formation 1999. 207-208 (1999)

M. Saito：“金牛座年轻恒星周围致密核心的分散”恒星形成学报 1999. 207-208 (1999)