NEW H-BAND STELLAR SPECTRAL LIBRARIES FOR THE SDSS-III/APOGEE SURVEY
NEW H-BAND STELLAR SPECTRAL LIBRARIES FOR THE SDSS-III/APOGEE SURVEY
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用于 SDSS-III/远地点巡天的新 H 波段恒星光谱库
DOI：
10.1088/0004-6256/149/6/181
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
G. Zasowski
中科院分区：
文献类型：
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作者：
O. Zamora;O. Zamora;D. A. García;D. A. García;C. A. Prieto;C. A. Prieto;Ricardo Carrera;Ricardo Carrera;L. Koesterke;B. Edvardsson;F. Castelli;B. Plez;D. Bizyaev;D. Bizyaev;Kátia Cunha;A. E. G. Pérez;A. E. G. Pérez;Bengt Gustafsson;J. Holtzman;J. E. Lawler;S. Majewski;A. Manchado;A. Manchado;S. Mészáros;N. Shane;M. Shetrone;Verne V. Smith;G. Zasowski
斯隆数字巡天III（SDSS-III）阿帕奇点天文台星系演化实验（APOGEE）获得了高分辨率（R = 22,500）、高信噪比（> 100？）的H波段（λ 1.5-1.7 μm）光谱。我们计算了光谱库与有效温度（T eff？>）范围从3500到8000 K，用于测量数据的自动化学分析。这些数据库用于从SDSS-III数据发布12（DR 12）中的APOGEE光谱中导出恒星参数和丰度，它们基于ATLAS 9模型大气和ASS APOGEE光谱合成代码。我们提出了第二套库的基础上MARCS模型大气和光谱合成代码Turbospectrum。ATLAS 9/ASS测试仪（T eff？> = 3500-8000 K）和MARCS/Turbospectrum（T eff？> = 3500-5500 K）网格覆盖了宽范围的金属丰度（−2.5 ≤？> [M/H] ≤？> +0.5 dex）、表面重力（0 ≤ log g ≤？> 5 dex）、微湍流（0.5 ≤？>关于我们8 km s-1），碳（-1 ≤？> [C/M] ≤？> +1 dex）、氮（-1 ≤？> [N/M] ≤？> +1 dex）和α-元素（−1 ≤？> [α/M] ≤？> +1 dex）变化，因此具有七个维度。我们比较了ATLAS 9/ASS STULT和MARCS/Turbospectrum库，并将它们应用于分析太阳和K2巨星大角星的H波段光谱，以及在非常高的分辨率下观察到的知名巨星的选定样本。新的APOGEE库是公开的，可用于使用其他高分辨率光谱仪在H波段进行化学研究。
The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high signal-to-noise ratio ( > 100 ?> ) spectra in the H-band (∼1.5–1.7 μm) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature ( T eff ?> ) ranging from 3500 to 8000 K for the automated chemical analysis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS-III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASSϵT spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASSϵT ( T eff ?> = 3500–8000 K) and MARCS/Turbospectrum ( T eff ?> = 3500–5500 K) grids cover a wide range of metallicity (−2.5 ≤ ?> [M/H] ≤ ?> +0.5 dex), surface gravity (0 ≤ log g ≤ ?> 5 dex), microturbulence (0.5 ≤ &xgr; ?> ≤ ?> 8 km s−1), carbon (−1 ≤ ?> [C/M] ≤ ?> +1 dex), nitrogen (−1 ≤ ?> [N/M] ≤ ?> +1 dex), and α-element (−1 ≤ ?> [α/M] ≤ ?> +1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASSϵT and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H-band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H-band using other high-resolution spectrographs.
斯隆数字巡天第十次数据发布：来自 SDSS-III 阿帕奇点天文台银河演化实验的首个光谱数据
DOI：
10.1088/0067-0049/211/2/17
发表时间：
2014
期刊：
The Astrophysical Journal Supplement Series
影响因子：
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作者：
Ahn C
通讯作者：
Ahn C