Interstellar Reddening in the Solar Neighborhood. III. A Renewal for the Southern Hemisphere

太阳附近的星际红化。

• 批准号: 8913418
• 负责人: Charles Perry
• 金额: $ 2.5万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-12-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913418&HistoricalAwards=false
• 关键词: Interstellar; Reddening; Solar; Neighborhood.; III.

Dr. Perry will use this grant to complete an observational study of the dust component of the interstellar medium in the neighborhood of the Sun. This study concentrates on stars accessible from the Southern Hemisphere. The results will complete the coverage of the spatial distribution of the interstellar reddening in the solar neighborhood, as similar data for stars in the Northern Hemisphere have already been analyzed. Although cosmic dust may comprise only one percent of the interstellar medium, its presence has a pronounced effect on astronomical observations because it is a wavelength dependent absorber of radiation from stars. It is essential, therefore, in many astronomical studies to correct for this reddening effect for any direction in space and at various distances from the Sun. Dr. Perry's aim is to provide reliable information on which astronomers can make a reddening correction.

佩里博士将利用这笔赠款完成一项观察性研究 星际介质中尘埃成分的 太阳附近 这项研究集中在恒星 从南半球可以到达。 结果将 完成对空间分布的覆盖 在太阳附近的星际红化，作为类似的数据， 已经分析过了。 虽然宇宙尘埃可能只占地球表面的百分之一 星际介质，它的存在有明显的影响， 天文观测，因为它是一个波长依赖 恒星辐射的吸收体。 因此，在 许多天文学研究来纠正这种变红效应， 空间中的任何方向和离太阳的不同距离。 博士 佩里的目的是提供可靠的信息， 天文学家可以进行红化修正。