The Iron Project: Large-scale Atomic Calculations for Iron-Period Elements
The Iron Project: Large-scale Atomic Calculations for Iron-Period Elements
批准号:
9115057
负责人:
Anil Pradhan
金额:
$21.13万
依托单位国家:
美国
项目类别:
Continuing grant
财政年份:
1992
资助国家:
美国
项目状态:
已结题
起止时间:
1992-01-01 至 1995-12-31
中文摘要
一些重元素的精确计算, 考虑碰撞激发的电离的各个阶段, 辐射跃迁,光电离和复合将是 使用R矩阵方法进行。 重点将主要是 铁周期元素,以解决明显的 在天文学物体中镍相对于铁过量。 迄今为止没有考虑的相对论效应将被 在计算中加入了原子数据库 建造和一些天体物理模型进行。 密切 与Opacity项目合作。 的 计算将在俄亥俄州的Cray YMP上进行, 没有NSF的费用。
英文摘要
Accurate calculations for a number of heavy elements in various stages of ionization considering collisional excitation, radiative transitions, photoionization and recombination will be performed using the R-matrix method. The focus will be primarily on the Iron period elements in order to resolve the apparent overabundance of Ni relative to Iron in astronomical objects. Relativistic effects heretofore not considered will be incorporated into the calculations, an atomic database constructed and some astrophysical modelling performed. Close collaboration with the Opacity project is intended. The calculations will be performed on the Cray YMP at Ohio State at no cost to the NSF.
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Accurate Stellar Opacities To Solve Astrophysical Problems
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批准号:1409207
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项目类别:Standard Grant
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资助金额:$44.01万
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财政年份:2014
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负责人:Anil Pradhan
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依托单位:
A Re-examination of Stellar Opacities and Implications for Solar Models
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批准号:0907763
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项目类别:Standard Grant
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资助金额:$39.5万
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财政年份:2009
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负责人:Anil Pradhan
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依托单位:
Theory of Recombination Lines in Astrophysical Sources
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批准号:0506889
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项目类别:Standard Grant
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资助金额:$29.4万
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财政年份:2005
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负责人:Anil Pradhan
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依托单位:
High-Precision Computational Spectroscopy Of Fe-Peak Elements
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批准号:0205827
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项目类别:Continuing grant
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资助金额:$25.52万
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财政年份:2002
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负责人:Anil Pradhan
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依托单位:
The Iron Project: Large-Scale Atomic Calculations For The Iron-Group And Heavier Elements
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批准号:9870089
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项目类别:Continuing grant
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资助金额:$24.0万
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财政年份:1998
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负责人:Anil Pradhan
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依托单位:
The Iron Project: Large-Scale Atomic Calculations For Iron Group Elements
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批准号:9421898
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项目类别:Continuing grant
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资助金额:$24.0万
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财政年份:1995
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负责人:Anil Pradhan
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依托单位:
U.S.-U.K. Cooperative Research: Stellar Opacities and Atomic Data
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批准号:9013946
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项目类别:Standard Grant
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资助金额:$1.35万
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财政年份:1990
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负责人:Anil Pradhan
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依托单位:
Radiative and Collisional Atomic Data for Singly Ionized Iron (FEII)
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批准号:8996215
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项目类别:Continuing grant
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资助金额:$9.74万
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财政年份:1989
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负责人:Anil Pradhan
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依托单位:
Radiative and Collisional Atomic Data for Singly Ionized Iron (FEII)
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批准号:8717626
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项目类别:Continuing Grant
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资助金额:$2.26万
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财政年份:1988
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负责人:Anil Pradhan
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依托单位:
海外基金