标题： 高光谱分辨率的恒星人口合成演化：光学波段 显示英文标题

标题： Evolutionary Stellar Population Synthesis at High Spectral Resolution: Optical Wavelengths

摘要： 我们展示了基于新合成恒星大气模型库的单星族（SSP）综合结果，该库的光谱采样分辨率为0.3 Å，覆盖从3000 Å到7000 Å的波长范围，并涵盖了广泛的金属丰度（两倍太阳、太阳、半太阳和十分之一太阳）。 这个恒星库由1650条光谱组成，这些光谱使用了恒星大气领域最新的改进计算得出。 特别是它包含了非LTE线掩模模型（适用于热星，Teff >= 27500 K）以及LTE线掩模模型（Phoenix，适用于冷星，3000 K <= Teff <= 4500 K）。 由于该库具有高光谱分辨率，进化综合模型可以用来预测大量弱吸收线的强度，以及在广泛年龄范围内最强线轮廓的演化。 SSP结果已针对1百万年到170亿年的年龄范围，利用日内瓦和帕多瓦轨道组提供的恒星演化模型进行了计算。 对于年轻的恒星群体，我们的结果对高温恒星有非常详细的覆盖，并且与帕多瓦和日内瓦等时线的结果相似。 对于中间和年老的恒星群体，一旦将我们的结果降级到较低分辨率，除了恒星演化物理所施加的限制外，与其他团队的结果相似。 描述了我们库在分析综合群体方面的局限性和优势。 完整的恒星光谱库和进化模型可以在以下网址获取：http://www.iaa.csic.es/~rosa 和 http://www.iaa.csic.es/~mcs/Sed@，或者向前两位作者索取。 显示英文摘要

摘要： We present the single stellar population (SSP) synthesis results of our new synthetic stellar atmosphere models library with a spectral sampling of 0.3 A, covering the wavelength range from 3000 A to 7000 A for a wide range of metallicities (twice solar, solar, half and 1/10 solar). The stellar library is composed of 1650 spectra computed with the latest improvements in stellar atmospheres. In particular it incorporates non-LTE line-blanketed models for hot (Teff >= 27500 K) and LTE line-blanketed models (Phoenix) for cool (3000 K =< Teff =< 4500 K) stars. Because of the high spectral resolution of this library, evolutionary synthesis models can be used to predict the strength of numerous weak absorption lines, and the evolution of the profiles of the strongest lines over a wide range of ages. The SSP results have been calculated for ages 1 Myr to 17 Gyr using the stellar evolutionary provided by the Geneva and Padova-tracks groups. For young stellar populations, our results have a very detailed coverage of high-temperature stars with similar results for Padova and Geneva isochrones. For intermediate and old stellar populations, our results, once degraded to a lower resolution, are similar to the ones obtained by other groups apart from limitations imposed by the stellar evolutionary physics. The limitations and advantages of our library for the analysis of integrated populations are described. The full set of the stellar library and the evolutionary models are available for retrieval at the websites http://www.iaa.csic.es/~rosa and http://www.iaa.csic.es/~mcs/Sed@, or on request from the first two authors.