populationn. 1.[U]人口 2.[C]【一般用单数】(某一地区的)全体居民 over population个体数过剩 最新单词 computing counter的意思【计】 计算器 computing complexity是什么意思及音标【计】 计算复杂性; 计算复杂性 computing community是什么意思及反义词【计】 计算界 ...
Stellar population anomalies in numerous star clusters are well-documented, implying that the notion of star clusters as true SSPs faces serious challenges. In this review, we focus on stellar populations in massive clusters with different ages. We present the history and progress of research in ...
As well as commemorating the 50th anniversary of the beginnings of the subject, this book brings together experts on all relevant parts of astrophysics to discuss the outstanding questions relating to the stellar population concept as an observational tool that gives us a physic... (展开全部) 我...
stellar population [′stel·ər ‚päp·yə′lā·shən] (astronomy) Either of two classes of stars, termed population I and population II; population I are relatively young stars, found in the arms of spiral galaxies, especially the blue stars of high luminosity; population II stars...
1) stellar population 星族1. In this paper, we introduce the definition of stellar cluster and the stellar population synthesis method first. 介绍了简单星族的定义和星族合成方法;简述了蓝致密星系的观测特征和研究意义;列出了我们利用北京天文台2 。
We conclude that (a) star cluster populations provide an excellent metric of evolutionary state, as they can age-date the past epochs of star formation; and (b) the extended dwarf galaxy population must be considered in assessing the dynamical state of a compact group....
Kroupa, P. et al.The Stellar and Sub-Stellar Initial Mass Function of Simple and Composite PopulationsCh. 4, 115–242 (Springer, Dordrecht, 2013). Google Scholar Smail, I., Ivison, R. J. & Blain, A. W. A deep sub-millimeter survey of lensing clusters: a new window on galaxy forma...
The Tkin value for all models is set to 30 K, which is a typical dust temperature for the submillimetre galaxy population, and the lowest Tkin that H2 gas can reach for such intensive starburst conditions, due to cosmic ray heating43. In b and c, we also overlay the line ratios (...
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We determine the stellar population properties - age, metallicity, dust reddening, stellar mass and the star formation history - for all spectra classified as galaxies that were published by the Sloan Digital Sky Survey (SDSS data release 14) and by the DEEP2 (data release 4) galaxy surveys....