Astronomy with the BIMA Array

AST-96-13998。加州大学伯克利分校。PI：-闪电战-96-13999。伊利诺伊大学。派：-E.Snyder AST-96-13716。马里兰大学。Pi：-S.Vogel天文学与BIMA阵列伯克利-伊利诺伊州-马里兰阵列(BIMA)是一种毫米波干涉仪，目前由9个直径6米的天线组成；未来5年将至少增加另外两个天线。BIMA位于伯克利的Hat Creek射电天文台，由加州大学伯克利分校、伊利诺伊大学和马里兰大学通过NSF和国家资助联合运营。这些奖项是对每个机构同时提交的相同建议的奖励，并支持在BIMA阵列进行的天文研究、技术开发和学生培训。BIMA的天文研究包括对太阳系物体、恒星包层、银河系内恒星形成区域和外部星系分子云的高分辨率研究。BIMA在过去三年中取得的显著成就包括从6个元素扩展到9个元素，以及扩展阵列基线以提供优于0.5角秒的角度分辨率。这些技术进步使BIMA的科学家们获得了第一张年轻的星际圆盘的分辨率图像，发现了塞弗特星系NGC1068核心的分子棒，并证实了星际醋酸的发现。新奖项下的科学计划将主要集中在利用最近获得的更高速度和分辨率的阵列。在技术领域，BIMA的工作人员将集中精力尝试使用总功率波动来消除在长基线上运行时由大气引起的相位波动。

AST-96-13998. University of California at Berkeley. PI: - Blitz AST-96-13999. University of Illinois. PI: - E. Snyder AST-96-13716. University of Maryland. PI: - S. Vogel Astronomy with the BIMA Array The Berkeley-Illinois-Maryland Array (BIMA) is a millimeter-wave interferometer presently made up of 9 six-meter diameter antennas; at least two other antennas will be added to the array during the next 5 years. located at Berkeley's Hat Creek Radio Observatory, BIMA was jointly capitalized and is jointly operated by the University of California at Berkeley, the University of Illinois and the University of Maryland through a combination of NSF and State funding. These awards are for identical proposals submitted simultaneously by each institution, and support astronomical research, technological development and student training carried out at the BIMA array. Astronomical research at BIMA includes high resolution studies of solar system objects, stellar envelopes, star-forming regions in the Galaxy, and molecular clouds in external galaxies. Notable accomplishments during the past three years at BIMA include expansion from 6 to 9 elements, and the extension of the array baselines to provide angular resolutions better than 0.5 arcsecond. These technical advancements permitted BIMA scientists to obtain the first resolved image of a young circumstellar disk, and to discover a molecular bar at the core of the Seyfert galaxy NGC 1068, and to confirm the discovery of interstellar acetic acid. Scientific plans under the new award will focus heavily on exploiting the recently-achieved higher speed and resolution of the array. In the technical domain, BIMA staff will concentrate attempting to use total power fluctuations to remove the phase fluctuations caused by the atmosphere when operating over long baselines.