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The Four-Dimensional Galaxy

四维星系

基本信息

批准号：
0607518
负责人：
Heather Morrison
金额：
$ 22.76万
依托单位：
Case Western Reserve University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2006
资助国家：
美国
起止时间：
2006-08-01 至 2010-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607518&HistoricalAwards=false
关键词：
Four Dimensional Galaxy

项目摘要

AST-0607518INSTITUTION: Case Western Reserve UniversityPI: Heather MorrisonTITLE: The Four-Dimensional GalaxyABSTRACTDr. Heather Morrison, at Case Western Reserve University, will use several surveys, primarily the Sloan Extension for Galactic Understanding and Exploration (SEGUE) K giant star survey" and the Spaghetti K giant survey", to trace the Galactic halo from galactocentric radii of 5-100 kiloparsecs. The SEGUE survey will produce a sample of 10,000 K giants two orders of magnitude larger than any previous sample. The Spaghetti survey and a new sample of metal-poor stars in the solar neighborhood will result in data for K giants in all 6 components of position/velocity space. Accurate distances, velocities and metallicities will be available for all these stars, making a four-dimensional map of the Milky Way that will be used to constrain the accretion history of the Galaxy, using both star streams in the halo and the structure of the outer disk.Dr. Morrison will undertake a calibration effort that is needed for the SEGUE K giant survey, but one that will be of use to future stellar researchers who wish to use the Sloan database with confidence. Dr. Morrison displays a commitment to outreach to the public and to students at her home institution. This research project will provide opportunities for undergraduate research and interactive classroom discussion. Finally, the Case program for Women in Science and Engineering, co-founded by Dr. Morrison, is involved in encouraging women undergraduates to stay in science.

研究机构：凯斯西储大学PI：石楠莫里森标题：四维星系摘要博士。凯斯西储大学的石楠莫里森将使用几个调查，主要是斯隆银河系理解和探索扩展（SEGUE）K巨星星星调查”和意大利面条K巨星调查”，从5-100千秒差距的银河系中心半径追踪银河系晕。 SEGUE调查将产生10，000 K巨星的样本，比以前的任何样本都大两个数量级。Spaghetti调查和太阳附近贫金属恒星的新样本将导致K巨星在位置/速度空间的所有6个分量中的数据。所有这些恒星的精确距离、速度和金属丰度都将被提供，制作一张银河系的四维地图，将被用来限制银河系的吸积历史，使用晕中的星星流和外盘的结构。莫里森博士将承担SEGUE K巨星调查所需的校准工作，但对于未来希望有信心使用斯隆数据库的恒星研究人员来说，这将是有用的。莫里森博士致力于向公众和她所在机构的学生推广。这个研究项目将为本科生的研究和互动课堂讨论提供机会。最后，由莫里森博士共同创立的科学和工程领域妇女案例方案参与鼓励女大学生留在科学领域。