The Distances and Origins of the High Velocity Hydrogen Clouds

高速氢云的距离和起源

• 批准号: 8718883
• 负责人: Antoinette Songaila
• 金额: $ 4万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-05-15 至 1991-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8718883&HistoricalAwards=false
• 关键词: Distances; Origins; Velocity; Hydrogen; Clouds

Drs. Antoinette and Lennox Cowie at the University of Hawaii will use observations of interstellar spectral lines to determine the distances to high velocity clouds of neutral atomic hydrogen gas. Approximately 10 percent of the Galactic sky is covered by high velocity clouds of neutral atomic hydrogen, but their origin and location has remained elusive for twenty years. No matter what their origin, they are potentially an extremely interesting phenomenon which may be important to our understanding of galaxy evolution and the energy and mass balance of the interstellar medium. The missing key to the high velocity clouds is a knowledge of their distances. The Cowies' project is aimed at determining those distances.

博士。夏威夷大学的安托瓦内特和伦诺克斯·考伊将利用星际谱线的观测来确定中性原子氢气高速云的距离。 银河系天空大约 10% 被中性原子氢高速云覆盖，但它们的起源和位置二十年来一直难以捉摸。 无论它们的起源是什么，它们都可能是一种极其有趣的现象，这对于我们理解星系演化以及星际介质的能量和质量平衡可能很重要。 高速云缺少的关键是了解它们的距离。 考伊斯夫妇的项目旨在确定这些距离。