RUI/Collaborative Research: A Spectroscopic Survey of Circumstellar Gas in Lambda Boo Stars

这是与三所大学合作项目的一部分，目的是对快速旋转的A型矮星周围的星周气体进行详细研究。一颗A型主序星星星燃烧着氢，它的光谱显示出强烈的氢吸收线。 其中一些A型恒星的表层金属丰度也很低，有时被称为“Lambda Boo”星，以第一颗显示出这些特征的Lambda Bootis命名。 该项目将侧重于观测气体排放，以限制从盘到星星的吸积模型，并更好地了解行星形成和演化模型。 该项目将产生更广泛的影响，有助于了解恒星和行星系统的演化。 这些机构还将增加一个重要的本科教育组成部分，让学生参与数据采集，减少，分析和结果出版。

This is part of a collaborative project with three universities to conduct a detailed study of circumstellar gas around rapidly rotating A-type dwarf stars. An A-type main-sequence star is burning hydrogen and ais distinguished by having spectra showing strong hydrogen absoprtion lines. Some of these A type stars also have low metal abundances in their surface layers and are sometimes referred to as "Lambda Boo" stars, after lambda Bootis, the first one to show these features. This project will focus on observing the gas emission in order to constrain models of accretion from disk to the star and to better understand planetary formation and evolution models. This project will have broader impacts of contributing to knowledge of stellar and planetary system evolution. These institutions will also add a significant undergraduate educational component, involving students in the data acquisition, reduction, analysis, and publication of results.