Analysis of Results from Volumes 1 - 4 of the Michigan Spectral Catalogue

根据光谱对恒星进行分类是天文学研究中一个重要而悠久的部分。光谱提供了恒星的温度、组成、演化阶段、绝对亮度和距离等信息。我们对恒星演化和银河系动力学的大部分了解都是基于恒星光谱目录中包含的信息。首席研究员（PI）提议继续她的工作，目前由美国国家科学基金会资助，对哈佛大学亨利·德雷珀（HD）目录中的恒星进行二维分类。迄今为止，已有13万颗恒星被分类，它们的光谱类型以密歇根光谱目录的名义公布。在目前的提案中，PI打算对目录第5卷中的恒星进行分类，这些恒星都位于南半球；并开始对第六卷的恒星进行分类。本科生和研究生将参与其中，但根据光谱对恒星进行分类的关键任务将由PI专门完成，以保持一致性。

The classification of stars according to their optical spectra is an important and time honored part of astronomical research. The spectra give information about the stars' temperatures, compositions, evolutionary stages, absolute brightnesses, and distances. Much of what we know about stellar evolution and Galactic dynamics is based on the information contained in spectral catalogues of stars. The Principal Investigator (PI) proposes to continue with her work, currently funded by NSF, on the two-dimensional classification of stars from Harvard's Henry Draper (HD) Catalogue. To date, 130,000 stars have been classified and their spectral types published under the title Michigan Spectral Catalogue. In the current proposal, the PI intends to classify stars for Volume 5 of the catalogue, all of which lie in the Southern Hemisphere; and to start the classification of stars for Volume 6. Undergraduate and graduate students will participate, though the crucial task of classifying the stars according to their spectra will be done exclusively by the PI in order to maintain uniformity.