The Open Cluster Chemical Abundances and Mapping Survey. VI. Galactic Chemical Gradient Analysis from APOGEE DR17
The Open Cluster Chemical Abundances and Mapping Survey. VI. Galactic Chemical Gradient Analysis from APOGEE DR17
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DOI：
10.3847/1538-3881/ac7ce5
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发表时间：
2022-06
期刊：
影响因子：
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通讯作者：
Natalie Myers;J. Donor;Taylor Spoo;P. Frinchaboy;K. Cunha;A. Price-Whelan;S. Majewski;R. Beaton;G. Zasowski;J. O’Connell;A. Ray;D. Bizyaev;C. Chiappini;D. A. Garc'ia-Hern'andez;D. Geisler;H. Jönsson;R. Lane;P. Longa-Peña;I. Minchev;D. Minniti;C. Nitschelm;A. Roman-Lopes
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文献类型：
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作者：
Natalie Myers;J. Donor;Taylor Spoo;P. Frinchaboy;K. Cunha;A. Price-Whelan;S. Majewski;R. Beaton;G. Zasowski;J. O’Connell;A. Ray;D. Bizyaev;C. Chiappini;D. A. Garc'ia-Hern'andez;D. Geisler;H. Jönsson;R. Lane;P. Longa-Peña;I. Minchev;D. Minniti;C. Nitschelm;A. Roman-Lopes
疏散星团化学丰度和绘图调查的目标是通过构建和分析数百个疏散星团中恒星的大量、全面、统一的红外光谱数据集来限制关键的银河系动力学和化学演化参数。这是OCCAM巡天的第六份贡献，介绍了对SDSS/APOGEE数据发布17（DR 17）结果的分析，这些结果来自150个疏散星团中的恒星样本，其中94个我们根据它们的颜色-星等图的外观指定为“高质量”。我们发现APOGEE DR 17衍生的[Fe/H]值与以前的高分辨率光谱疏散星团丰度研究的结果吻合得很好。使用高质量样品的一个子集，测量了银河系16种化学元素的丰度梯度，包括[Fe/H]，银心半径（R GC）和引导中心半径（R guide）。我们发现在6 > R GC < 11.5 kpc的范围内，银河系[Fe/H]对R GC的整体梯度为−0.073 ± 0.002 dex kpc−1，[Fe/H]对R指南也有类似的梯度。O、Mg、S、Ca、Mn、Na、Al、K和Ce的丰度梯度也很大。我们的大样本还允许我们探索其余15种元素在四个年龄段中的梯度演变。
The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the construction and analysis of a large, comprehensive, uniform data set of infrared spectra for stars in hundreds of open clusters. This sixth contribution from the OCCAM survey presents analysis of SDSS/APOGEE Data Release 17 (DR17) results for a sample of stars in 150 open clusters, 94 of which we designate to be “high-quality” based on the appearance of their color–magnitude diagram. We find the APOGEE DR17-derived [Fe/H] values to be in good agreement with those from previous high-resolution spectroscopic open cluster abundance studies. Using a subset of the high-quality sample, the Galactic abundance gradients were measured for 16 chemical elements, including [Fe/H], for both Galactocentric radius (R GC) and guiding center radius (R guide). We find an overall Galactic [Fe/H] versus R GC gradient of −0.073 ± 0.002 dex kpc−1 over the range of 6 > R GC < 11.5 kpc, and a similar gradient is found for [Fe/H] versus R guide. Significant Galactic abundance gradients are also noted for O, Mg, S, Ca, Mn, Na, Al, K, and Ce. Our large sample additionally allows us to explore the evolution of the gradients in four age bins for the remaining 15 elements.