Study of Global Star formation in Our Galaxy by servey observation of Emission lines of Anmonia molecules

为了对北海道大学11米射电望远镜进行升级改造，我们研制了22 GHz的新射电接收机、22 GHz接收机的磨光机、数字频谱分析仪以及北海道大学11米射电望远镜的控制系统。本研究的目的是通过观测银河系分子云中致密核中的ANMONIA分子来研究银河系全球恒星形成的性质。在本研究中，由于密度和温度的研究对研究分子云中恒星的形成非常重要，所以我们将从旋转激发态的高度激发观测四条不同的谱线。我们对银河系旋臂上的天鹅座分子进行了实验观测。我们已经成功地检测出(J，K)=(1，1)，(2，2)和(3，3)条直线。利用这些谱线的强度，我们推导出了20K的分子温度，与以前的观测结果一致。我们将对银河系致密分子云中的Anmolia分子进行巡天观测，以研究全球恒星的形成。

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.