基本信息
浏览量:176
职业迁徙
个人简介
hrough a study of the Galactic globular clusters, it should be possible to answer such questions as "What is the age difference between the youngest and oldest clusters?" and "What are their spreads in age as a function of metallicity and Galactocentric distance?" Because these numbers set the basic timescales for the formation of the halo, they provide fundamental input into our understanding of how galaxies evolve. Moreover, the age of the oldest cluster is an important cosmological constraint since the universe cannot be younger than its constituents. In their on-going effort to resolve these issues, VandenBerg and his group are incorporating helium and metals diffusion into their models, studying the consequences of deep-mixing in giant-branch stars, and extending the model grids to include the horizontal-branch and asymptotic giant branch phases. These calculations, which are tightly constrained by observations, will ultimately be used to synthesize the stellar populations of distant systems. D.A.V. has also been involved in a recent HST program to search for planets and he has joined a collaboration which proposes to use the Space Interferometry Mission (SIM) to measure direct trigonometric distances to the nearest globulars.
研究兴趣
论文共 186 篇作者统计合作学者相似作者
按年份排序按引用量排序主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
arXiv (Cornell University)no. 3 (2024): 6888-6912
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYno. 3 (2023): 4517-4535
Karsten Brogaard, E. Pakštienė,Frank Grundahl,Šarūnas Mikolaitis,Gražina Tautvaišienė,D. Slumstrup, G. J. J. Talens,Don A. VandenBerg,Andrea Miglio,Torben Arentoft,H. Kjeldsen,Rimvydas Janulis,
K. Brogaard, E. Pakštienė, F. Grundahl, Š. Mikolaitis, G. Tautvaišiené, D. Slumstrup, G. J. J. Talens,Don A. VandenBerg,Andrea Miglio, T. Arentoft, H. Kjeldsen, R. Janulis,
VizieR Online Data Catalog (2020)
引用0浏览0引用
0
0
Topcu G. Böcek,Afsar M.,Sneden C.,Pilachowski C. A.,Denissenkov P. A.,VandenBerg D. A.,Wright D., Mace G. N.,Jaffe D. T., Strickland E.,Kim H.,Sokal K. R.
C. Sneden,Gamze Böcek Topcu,Melike Afşar,Pavel A. Denissenkov,Don A. VandenBerg, C. A. Pilachowski, Doug Wright, Gregory N. Mace, D. Jaffe, Emily Strickland, H. Kim
American Astronomical Society Meeting Abstracts #235 (2020)
引用0浏览0引用
0
0
加载更多
作者统计
合作学者
合作机构
D-Core
- 合作者
- 学生
- 导师
数据免责声明
页面数据均来自互联网公开来源、合作出版商和通过AI技术自动分析结果,我们不对页面数据的有效性、准确性、正确性、可靠性、完整性和及时性做出任何承诺和保证。若有疑问,可以通过电子邮件方式联系我们:report@aminer.cn