Astronomical Researches with High-level Overseas Telescopes

Nakamura对标准恒星进行了光度观测，以便在飞行中校准宇宙飞船muse - c上的多波段相机。成功地获得了几颗标准恒星的数据。巴巴在墨西哥的圣佩德罗马丁天文台进行了散斑光谱观测。他和其他有趣的双星被观测到。柴田用VLBA对6个超强激光源核的HI吸收进行了观测。佐藤用VLBA对NGC3079进行了监测程序，研究了超强激光源核区的结构。田村在莫纳克亚山顶的JCMT上用偏振计对金牛座T星进行了亚毫米偏振测量。首次在几颗金牛座T星上检测到亚毫米偏振，提供了原行星盘磁场的信息。利用NRAO的43米望远镜，F.Sato在附近恒星形成区域的大片区域获得了20000多个HI光谱。Ohishi使用SEST寻找热分子云核心的大环状分子，并发现了呋喃可能发出的信号。Sakamoto以弧秒分辨率观测了5个邻近螺旋星系的分子气体，揭示了< 100pc分辨率下的气体分布和运动学。探测到各种特征，包括由棒状气体产生的双峰，核气体盘，可能由核恒星爆发引起的中央气体孔。窄带成像观测是由Ogura在Byurakan天体物理天文台对赫比格-哈罗候选者进行的。在TMC和NGC 2264中分别发现了一个非凡的HH天体和一个奇特的双极星云。Nakai利用VLBA绘制了塞弗特星系IC2560核区的H20脉泽发射图。结果表明，微波激射斑在原子核内0.1 pc的致密区呈直线分布，表明存在绕核旋转的气体盘。

Nakamura made photometric observations of the standard stars for the in-flight calibration of the multi-band camera aboard the spacecraft MUSES-C.Data for several standard stars were successfully obtained. Speckle spectroscopic observations were conducted at the San Pedro Martir Observatory in Mexico by Baba. Be and other interesting binary stars were observed. Shibata made observations of HI absorption from the nuclei of 6 megamaser sources using VLA.S.Sato made a monitoring program of NGC3079 using VLBA to investigate the structure of the nuclear region of megamaser source. Tamura conducted submillimeter polarization measurements of T Tauri stars with polarimeter on the JCMT atop of Mauna Kea. The submillmiter polarizations were positively detected for the first time from several T Tauri stars, providing information of the magnetic fields in protoplanetary disks. With the 43m telescope at NRAO, more than 20000 HI spectra were obtained in large areas of nearby star-forming regions by F.Sato. Ohishi used the SEST to search for large cyclic molecules toward hot molecular cloud cores and found a possible signal from furan. Sakamoto observed molecular gas in the nuclei of five neraby spiral galaxies at arcsecond resolution to reveal gas distribution and kinematics at < 100 pc resolutions. Various features are detecte including twin peaks of gas produced by bars, nuclear gas disks, central gas holes presumably caused by nuclear starbursts. Narrow-band Imaging observations were carried out of Herbig-Haro (HH) candidates at the Byurakan Astrophysical Observatory by Ogura. A remarkable HH object and a peculiar bipolar nebulawere discovered in TMC and NGC 2264, respectively. Nakai mapped H20 maser emission in the nuclearregion of a Seyfert galaxy IC2560, using VLBA.The result shows that maser spots are distributed along a line in the compact region of 0.1 pc in the nucleus, suggesting a gas disk rotating around the nucleus.