论文标题
用开放式簇映射银河金属性梯度：最新和未来的挑战
Mapping the Galactic Metallicity Gradient with Open Clusters: The State-of-the-Art and Future Challenges
论文作者
论文摘要
在本文中，我们利用通过高分辨率光谱调查和程序（即Apogee，Gaia-eso，Galah，galah，occaso和Spa）为开放群集成员收集的数据。这些数据已被匀浆，然后进行了整体分析。所得的目录包含251个银河开放簇的[Fe/H]和轨道参数。通过具有高质量金属确定的175个开放式群集获得的径向金属梯度的斜率为$ - $ 0.064 $ \ pm $ 0.007 dex kpc $^{ - 1} $。径向金属分布通过开放式群集缩放到r $ _ {\ rm gal} $ = 12.1 $ \ pm $ 1.1 kpc。在[fe/h] -l $ _ {\ rm z} $图中以开放式簇追踪的坡度为$ - $ 0.31 $ \ pm $ 0.02 10 $^{3} $ dex km $^{ - 1} - 1} $ kpc $^{-1} $^{ - 1} $ s，但lm $ pm^$ z \ z} kpc s $^{ - 1} $。在本文中，我们还回顾了对开放群集研究的一些高优先级实践挑战，这些挑战将大大推动我们的理解超越最先进。最后，我们将银河径向金属性梯度与其他螺旋星系的形状进行比较。
In this paper, we make use of data collected for open cluster members by high-resolution spectroscopic surveys and programmes (i.e., APOGEE, Gaia-ESO, GALAH, OCCASO, and SPA). These data have been homogenised and then analysed as a whole. The resulting catalogue contains [Fe/H] and orbital parameters for 251 Galactic open clusters. The slope of the radial metallicity gradient obtained through 175 open clusters with high-quality metallicity determinations is $-$0.064 $\pm$ 0.007 dex kpc$^{-1}$. The radial metallicity distribution traced by open clusters flattens beyond R$_{\rm Gal}$=12.1 $\pm$ 1.1 kpc. The slope traced by open clusters in the [Fe/H]-L$_{\rm z}$ diagram is $-$0.31 $\pm$ 0.02 10$^{3}$ dex km$^{-1}$ kpc$^{-1}$ s, but it flattens beyond L$_{\rm z}$=2769 $\pm$ 177 km kpc s$^{-1}$. In this paper, we also review some high-priority practical challenges around the study of open clusters that will significantly push our understanding beyond the state-of-the-art. Finally, we compare the shape of the galactic radial metallicity gradient to those of other spiral galaxies.
