A high-resolution stellar library for evolutionary population synthesis
A high-resolution stellar library for evolutionary population synthesis
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DOI：
10.1111/j.1365-2966.2005.08703.x
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发表时间：
2005-01
影响因子：
4.8
通讯作者：
L. Martins;R. Delgado;C. Leitherer;M. Cerviño;P. A. I. D. A. D. Andalucia-P.-A.-I.-D.-A.-D.-Andalucia-103275432;Spain.
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文献类型：
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作者：
L. Martins;R. Delgado;C. Leitherer;M. Cerviño;P. A. I. D. A. D. Andalucia-P.-A.-I.-D.-A.-D.-Andalucia-103275432;Spain.
我们提供了一个包含1654个高分辨率恒星光谱的光谱库，采样率为0.3A，波长范围为3000 - 7000 A。该数据库的计算采用了恒星大气层的最新改进，结合了热、大质量（T eff ≥ 27 500 K）恒星的非局部热力学平衡（非LTE）线覆盖模型和冷（3000 ≤ T eff ≤ 4500 K）恒星的线覆盖模型。网格的总覆盖范围为3000 K ≤ T eff ≤ 55 000 K和-0.5 ≤ log g ≤ 5.5，四种化学丰度值：2倍太阳能、太阳能、半太阳能和1/10太阳能。进化合成模型使用这个库中提出的配套文件。我们通过计算和比较大量的H和He I线的等效宽度以及一些常用的金属指数来测试库的一般行为。我们还比较了库与经验库STELIB和Indo-US。完整的合成恒星光谱可在我们的网站上查阅（http：//www.iaa.csic.es/Ekrosa和http：//www.astro.iag.usp.br/Eklucimara/library.htm）。
We present a library of 1654 high-resolution stellar spectra, with a sampling of 0.3 A and covering the wavelength range from 3000 to 7000 A. The library was computed with the latest improvements in stellar atmospheres, incorporating non-local thermodynamic equilibrium (non-LTE) line-blanketed models for hot, massive (T eff ≥ 27 500 K) and line-blanketed models for cool (3000 ≤ T eff ≤ 4500 K) stars. The total coverage of the grid is 3000 K ≤ T eff ≤ 55 000 K and -0.5 ≤ log g ≤ 5.5, for four chemical abundance values: twice solar, solar, half solar and 1/10 solar. Evolutionary synthesis models using this library are presented in a companion paper. We tested the general behaviour of the library by calculating and comparing equivalent widths of numerous H and He I lines, and some of the commonly used metallic indices. We also compared the library with the empirical libraries STELIB and Indo-US. The full set of the synthetic stellar spectra is available from our websites (http://www.iaa.csic.es/∼rosa and http://www.astro.iag.usp.br/∼lucimara/library.htm).