改进的Strömgren滤波框架下种群综合模型的比较研究
Comparative studies of Population Synthesis Models in the frame work of modified Strömgren filters
摘要：
演化模型是恒星星族研究的重要组成部分，可以理解它们的演化，但是尽管它们有着悠久的发展历史，它们经常歪曲和误解通过宽带和光谱测量观察到的恒星星族的性质。随着这些综合模型的不断增多，模型比较成为选择合适的模型进行升级的重要分析。随着模型的比较，我们重新调查的技术修改斯特伦格伦测光测量可靠的参数敏感的颜色和估计精确的模型年龄和金属丰度。用GALEV和Worthey的Lick/IDS模型评估Rakos/Schulz模型发现较小的颜色变化：Δ（uz-vz）$\leq$ 0.056，Δ（bz-yz）$\leq$ -0.05和Δ（vz-yz）$\leq$ 0.061。这项研究传达了一个很好的协议GALEV模型与修改后的Strömgren颜色，但与观察到的球状星团数据的紫外线模型预测差，而光谱模型表现不佳，由于使用较旧的等时线和恒星光谱库与不准确/不充分的知识，各种恒星的阶段和他们的治疗。总的来说，评估发现，通过减轻年龄金属丰度简并的影响，修改后的斯特伦格伦测光非常适合研究不同类型的恒星星族。
英文摘要：
Evolutionary models form a vital part of stellar population research to understand their evolution, but despite their long history of development, they often misrepresent and misinterpret the properties of stellar population observed through broadband and spectroscopic measurements. With the growing numbers of these synthesis models, model comparison becomes an important analysis to choose a suitable model for upgrade. Along with the model comparison, we reinvestigate the technique of modified Strömgren photometry to measure reliable parameter-sensitive colours and estimate precise model ages and metallicities. The assessment of Rakos/Schulz models with GALEV and Worthey's Lick/IDS model find smaller colour variation: Δ(uz-vz) $\leq$ 0.056, Δ(bz-yz) $\leq$ -0.05 and Δ(vz-yz) $\leq$ 0.061. The study conveys a good agreement of GALEV models with the modified Strömgren colours but with poor UV model predictions with the observed globular cluster data, while the spectroscopic models perform badly due to the use of older isochrone and stellar spectral libraries with inaccurate/insufficient knowledge of various stellar phases and their treatment. Overall, the assessment finds modified Strömgren photometry well suited to study different types stellar populations by mitigating the effects of the age-metallicity degeneracy.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
