THE RAVE CATALOG OF STELLAR ELEMENTAL ABUNDANCES: FIRST DATA RELEASE
THE RAVE CATALOG OF STELLAR ELEMENTAL ABUNDANCES: FIRST DATA RELEASE
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DOI：
10.1088/0004-6256/142/6/193
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
C. Boeche;A. Siebert;M. Williams;R. D. Jong;M. Steinmetz;J. Fulbright;G. Ruchti;O. Bienaym'e;J. Bland-Hawthorn;R. Campbell;K. Freeman;B. Gibson;G. Gilmore;E. Grebel;A. Helmi;U. Munari;J. Navarro;Q. Parker;W. Reid;G. Seabroke;A. Siviero;F. Watson;R. Wyse;T. Zwitter
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文献类型：
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作者：
C. Boeche;A. Siebert;M. Williams;R. D. Jong;M. Steinmetz;J. Fulbright;G. Ruchti;O. Bienaym'e;J. Bland-Hawthorn;R. Campbell;K. Freeman;B. Gibson;G. Gilmore;E. Grebel;A. Helmi;U. Munari;J. Navarro;Q. Parker;W. Reid;G. Seabroke;A. Siviero;F. Watson;R. Wyse;T. Zwitter
我们目前的化学元素丰度为36,561恒星观测的径向速度实验（RAVE），一个雄心勃勃的光谱调查我们的银河系在银河系纬度|B|> 25°，星等范围为9 <IDENIS <13。RAVE光谱覆盖了Ca-三重态区域，在8410-8795 nm处，分辨率为R = 7500。RAVE化学目录的第一次数据发布是对第三次RAVE径向速度和恒星参数数据发布的补充，它包含元素Mg、Al、Si、Ca、Ti、Fe和Ni的化学丰度，根据对合成光谱和真实的光谱进行的准确性测试判断，平均误差为10.2 dex。通过专用处理管道估计丰度，其中从吸收线等效宽度库获得各条线的生长曲线，以构建模型光谱，然后通过χ2最小化技术将其与观察到的光谱匹配。我们计划在未来的数据发布中扩展这一管道，以包括对其他元素（如氧和硫）的估计。
We present chemical elemental abundances for 36,561 stars observed by the RAdial Velocity Experiment (RAVE), an ambitious spectroscopic survey of our Galaxy at Galactic latitudes |b| > 25° and with magnitudes in the range 9 <IDENIS <13. RAVE spectra cover the Ca-triplet region at 8410–8795 Å with resolving power R ∼ 7500. This first data release of the RAVE chemical catalog is complementary to the third RAVE data release of radial velocities and stellar parameters, and it contains chemical abundances for the elements Mg, Al, Si, Ca, Ti, Fe, and Ni, with a mean error of ∼0.2 dex, as judged from accuracy tests performed on synthetic and real spectra. Abundances are estimated through a dedicated processing pipeline in which the curve of growth of individual lines is obtained from a library of absorption line equivalent widths to construct a model spectrum that is then matched to the observed spectrum via a χ2 minimization technique. We plan to extend this pipeline to include estimates for other elements, such as oxygen and sulfur, in future data releases.