2004 Fiscal Year Final Research Report Summary
Study of Global Star formation in Our Galaxy by servey observation of Emission lines of Anmonia molecules
| Project/Area Number |
14340058
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Hokkaido University |
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Principal Investigator |
HABE Asao Hokkaido University, Graduate School of Sci., Associate Professor, 大学院・理学研究科, 助教授 (90180926)
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| Co-Investigator(Kenkyū-buntansha) |
FUJIMOTO Msayuki Hokkaido University, Graduate School of Sci., Professor, 大学院・理学研究科, 教授 (00111708)
KANEKO Noboru Hokkaido University, Graduate School of Sci., Associate Professor, 大学院・理学研究科, 助教授 (50001847)
NAKAI Naomasa Tsukuba University, Department of Physics, Professor, 物理学系, 教授 (80192665)
KAMENO Seiji National Observatory of Japan, Division of Radio Astronomy, Instructor, 宇宙電波天文学系, 助手 (20270449)
SORAI Kazuo Hokkaido University, Graduate School of Sci., Instructor, 大学院・理学研究科, 助手 (80344464)
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| Project Period (FY) |
2002 – 2004
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| Keywords | molecular cloud / star formation / our Galaxy / interstellar molecule / Radio astronomy / astrophysics / Anmonia molecule |
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| Research Abstract |
In order to upgrade Hokkaido University 11m radio telescope, we have made the new radio receiver of 22Ghz, the hone for 22GHz receiver, the degital spctrum analyzers, and the control system of Hokkaido university 11m radio telescope. Purpose of our study is to investigate of property of global star formation in our galaxy, by observation of Anmonia molecules whic is in dense cores in molecular clouds in our galaxy. In this study, we will observe four, different spectral lines from highly exitation of rotational states of Anmonia molecules to know rotational excitation temperature, since study of density and temperature is very important to study star formation in molecular clouds.
We have made the test observation of Anmonia molecules in the Cygnus region which is in the spiral arm in our Galaxy. We have succeeded to detect (J,K)=(1,1),(2,2) and (3,3)lines. By using the intensity of these lines, we deduce temperature of molecules which is 20K and is consistent with previous observation.
We will make survey observation of Anmolia molecules in dense molecular clouds in our galaxy to study global star formation.
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