Astronomical Research with the Owens Valley Millimeter Array

AST 96 - 13717。加州理工学院。PI：N。z. 斯科维尔 欧文斯谷毫米波天线阵的天文研究 该奖项支持研究，技术开发和 加州理工学院的学生教育 欧文斯谷毫米阵列。数组由6个精度组成 10.4米直径的天线，目前可以定位到 最大间距为南北220米，东西200米。所有的 望远镜配备了双通道（2.6和1.3毫米） 低温硅接收器在较短的波长下， 该阵列可达到的角分辨率为0.7角秒。 目前，该阵列大约50%的观测时间 致力于非加州理工学院天文学家的研究。 在过去三年的赠款任期内，欧文斯谷 阵列获得了分子发射的孔径合成图像 从彗星到演化恒星的外壳， 银河系中的恒星形成区以及旋臂 和其他星系的活跃核该阵列还被用于 对活动星系核、星暴和 高红移的超亮星系 在上一次赠款期间 在此期间，天文台还取得了一些技术进步， 包括发展同时观察 在1毫米和3毫米处，将连续带宽加倍至2 GHz， 安装自动调谐和全LO覆盖。主动系统 还设计了一种补偿大气相位波动的方法 安装开始了。 在接下来的三年时间里， 天文台的科学计划将继续包括研究 高红移的河外星系、原恒星和星星形成区以及与之相关的原行星状星云， 银河系的结构，准直流出年轻 恒星、星际化学和各种太阳系 对象

AST 96-13717. California Institute of Technology. PI: N. Z. Scoville Astronomical Research with the Owens Valley Millimeter Array This award supports research, technological development and student education at the California Institute of Technology's Owens Valley millimeter array. The array is made up of 6 precision 10.4m-diameter antennas, which currently can be positioned out to maximum spacings of 220m north-south and 200m east-west. All the telescopes are equipped with dual-channel (2.6 and 1.3mm) cryogenic SiS receivers. At the shorter wavelength, the highest angular resolution attainable by the array is 0.7 arcseconds. Approximately 50% of the array's observing time is presently devoted to investigations by non-Caltech astronomers. During the tenure of the past three year grant, the Owens Valley array has obtained aperture synthesis images of molecular emission in domains ranging from comets to the envelopes of evolved stars, to star-forming regions in the Galaxy, as well as the spiral arms and active nuclei of other galaxies. The array has also been used for extensive studies of active galactic nuclei, starburst and ultraluminous galaxies at high redshifts. During the last grant period, the observatory also made a number of technical advances, including the development of the ability to observe simultaneously at 1 and 3mm, doubling the continuum bandwidth to 2 GHz, and installing automated tuning and full LO coverage. An active system to compensate for atmospheric phase fluctuations was also designed and installation begun. In the next three year grant period the observatory's scientific programs will continue to include studies of high redshift extragalactic systems, protostars and star- forming regions and their associated protoplanetary nebulae, the structure of the Milky Way Galaxy, collimated outflows from young stars, interstellar chemistry and a variety of solar system objects.