A CCD Survey of the Brighter Stars in Globular Clusters
A CCD Survey of the Brighter Stars in Globular Clusters
批准号:
9115150
负责人:
Ian Thompson
金额:
$3.17万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1992
资助国家:
美国
项目状态:
已结题
起止时间:
1992-04-01 至 1994-09-30
中文摘要
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英文摘要
The staple of the field of observational stellar evolution is the study of the form of the Hertzsprung-Russell Diagram (stellar surface temperature vs. luminosity) of star clusters. Using a new wide-field CCD (Charge Coupled Device) camera and over a two year period, the the Principal and Co-Investigators will obtain accurate colors and brightnesses of the brighter stars in 50 globular clusters and place them on a uniform scale. These results will be used to derive the cluster ages and structural properties of the stars as they evolve off the "main sequence", become red giants, and ultimately "horizontal branch stars."
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海外基金