Development of Sub-Arc Second Angular Resolution with One Kilometer Baseline in the Millimeter Array

毫米波阵中一公里基线亚弧秒角分辨率的发展

• 批准号: 9413933
• 负责人: William Welch
• 金额: $ 124.4万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413933&HistoricalAwards=false
• 关键词: Development; Sub; Arc; Second; Angular

ABSTRACT STI-9413933 Welch, William J. This project will increase the number of antennas in the Berkeley, Illinois, Maryland Association (BIMA) Array from nine to 11, thereby increasing its speed and sensitivity, and will increase the angular resolution of the array to 0.1" (HST resolution) by adding stations which produce one kilometer baselines both East-West and North- South. Optical fiber will be used to interconnect them. Much of the unique and important science to arise from millimeter interferometers has resulted from their superior spatial resolution compared to large single antennas. Current millimeter arrays are limited to resolutions of 1.5" to 3" by the maximum available separations between antennas. However, this resolution is not a fundamental limit. Extrapolation from experience with current millimeter arrays suggests that observations should be successful on several kilometer baselines during good weather. The important new science that this development will enable includes adequate resolution to fully image star formation, the study of rich interstellar chemistry in distant clouds, imaging Active Galactic Nuclei, and imaging the important smaller members of the solar system. ***

摘要 STI-9413933韦尔奇，威廉·J。 该项目将把伊利诺斯州伯克利和马里兰州协会（比马）阵列的天线数量从9个增加到11个，从而提高其速度和灵敏度，并通过增加产生东西和南北1公里基线的台站，将阵列的角分辨率提高到0.1”（HST分辨率）。 光纤将被用来连接它们。 毫米干涉仪产生的许多独特而重要的科学都是由于它们比大型单天线具有上级空间分辨率。 目前的毫米阵列的分辨率仅限于1.5”至3”的天线之间的最大可用间隔。 然而，这一决议并不是一个根本性的限制。 根据目前毫米阵列的经验推断，在天气好的情况下，在几公里的基线上进行观测应该是成功的。 这一发展将使重要的新科学包括足够的分辨率来充分成像星星的形成，研究遥远云层中丰富的星际化学，成像活动星系核，以及成像太阳系中重要的较小成员。 ***