论文标题
开放集群化学丰度和映射调查:VI。 Apogee DR17的银河化学梯度分析
The Open Cluster Chemical Abundances and Mapping Survey: VI. Galactic Chemical Gradient Analysis from APOGEE DR17
论文作者
论文摘要
开放群集化学丰度和映射(OCCAM)调查的目的是通过构造和分析数百个开放群集中恒星的恒星红外光谱的构造和分析来限制关键的银河动态和化学演化参数。 OCCAM调查的第六次贡献介绍了150个开放式簇中的恒星样本的SDS/Apogee数据17(DR17)结果,我们指定的是“高质量”,基于其颜色 - 质量图的出现。我们找到了与apogee dr17 dr17 dr17 dr17 dr17的良好相关性的良好相关性一致性的良好的研究。高质量样本的子集,包括16个化学元素,包括[fe/h]的子集,用于半乳酸半径($ r_ {gc} $)和指导中心半径($ r_ {guide} $)。 DEX/KPC在$ 6 <r_ {gc} <11.5 $ kpc的范围内,对于[Fe/h]而言,与$ r_ {guide} $相似,也可以指出,对于O,MG,S,CA,CA,CA,NA,NA,NA,AL,AL,AL,AL,AL,AL,AL,AL,AL,也可以指出,则可以启动。元素。
The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the construction and analysis of a large, comprehensive, uniform data set of infrared spectra for stars in hundreds of open clusters. This sixth contribution from the OCCAM survey presents analysis of SDSS/APOGEE Data Release 17 (DR17) results for a sample of stars in 150 open clusters, 94 of which we designate to be "high quality'' based on the appearance of their color-magnitude diagram. We find the APOGEE DR17-derived [Fe/H] values to be in good agreement with those from previous high resolution spectroscopic open cluster abundance studies. Using a subset of the high quality sample, the Galactic abundance gradients were measured for 16 chemical elements, including [Fe/H], for both Galactocentric radius ($R_{GC}$) and guiding center radius ($R_{Guide}$). We find an overall Galactic [Fe/H] vs $R_{GC}$ gradient of $-0.073 \pm 0.002$ dex/kpc 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.