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Rotation and Oxygen Abundances of Blue Horizontal Branch Stars

Rotation and Oxygen Abundances of Blue Horizontal Branch Stars
蓝色水平分支恒星的旋转和氧丰度
批准号：
9315136
负责人：
Ruth Peterson
金额：
$12.63万
依托单位：
Individual Award
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1994
资助国家：
美国
项目状态：
已结题
起止时间：
1994-05-01 至 1997-12-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315136&HistoricalAwards=false
关键词：
RotationOxygenAbundancesBlueHorizontal

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英文摘要
9315136 Peterson In various globular clusters, stars are distributed along the horizontal branch in quite different ways. Although mass loss on the red giant branch is widely thought to be responsible for this distribution, the underlying parameter which controls the mass loss has not been established. The PI will measure rotation velocities, oxygen abundances and helium abundances for horizontal branch stars in clusters with a range of properties. This will help to establish whether any of these parameters play an important role in horizontal branch evolution. ***
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