Radio Astronomical Studies with the BIMA Array

AbstractAST 99 - 81363。伊利诺伊大学。该奖项支持伯克利-伊利诺伊-马里兰协会（BIMA）阵列的研究、技术开发和学生教育。BIMA由10个直径6.1米的天线组成，位于加州伯尼附近。BIMA的任务是在30-245 GHz频率范围内对天文物体进行光谱和连续观测。天文台是由美国国家科学基金会和私人资金建造的。BIMA目前是美国从事毫米波波段干涉测量观测的两个设施之一（另一个是欧文斯谷毫米波阵列，也由美国国家科学基金会资助）。在未来三年内，BIMA计划开展以下科学项目：(1)1.3毫米星周盘的高分辨率（0.15英寸）成像。（ii）通过分子CN中的塞曼效应测量致密分子云中的磁场强度。（iii）使用Sunyaev-Zel'dovich效应搜索任何红移的星系团，并推导哈勃常数。继续对邻近星系进行CO成像调查。计划的技术发展包括：(i)实施双极化13毫米MMIC接收器。拓宽中频带宽并开发新的宽带相关器。安装装有冷却前端的新水蒸汽监测仪。升级天线控制系统

AbstractAST 99-81363. University of Illinois. PI: L.E. SnyderRadio Astronomical Studies with the BIMA ArrayThis award supports research, technological development, and student education at the Berkeley-Illinois-Maryland Association (BIMA) Array. BIMA consists of ten 6.1-meter-diameter antennas located near Burney, California. The mission of BIMA is to carry out spectroscopic and continuum observations of astronomical objects in the frequency range 30-245 GHz. The observatory was constructed with funds from the NSF and from private sources. BIMA is presently one of two US facilities engaged in interferometric observations in the millimeter wavelength band (the other being the Owens Valley Millimeter Array, also funded by NSF). Over the next three years, BIMA plans to carry out the following scientific programs: (i) High-resolution (0.15") imaging of circumstellar disks at 1.3mm.(ii) Measurement of magnetic field strengths in dense molecular clouds via the Zeeman effect in the molecule CN.(iii) Searches for galaxy clusters at any redshift, and derivation of the Hubble Constant, using the Sunyaev-Zel'dovich effect.(iv) Continuation of a CO imaging survey of nearby galaxies.Planned technological developments include:(i) Implementation of dual polarization l3mm MMIC receivers.(ii) Broadening the IF bandwidth and developing a new broadband correlator.(iii) Installing new water vapor monitors with cooled frontends.(iv) Upgrading the antenna control system