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The Milky Way’s stellar disk
The Astronomy and Astrophysics Review ( IF 25.8 ) Pub Date : 2013-05-01 , DOI: 10.1007/s00159-013-0061-8
Hans-Walter Rix , Jo Bovy

A suite of vast stellar surveys mapping the Milky Way, culminating in the Gaia mission, is revolutionizing the empirical information about the distribution and properties of stars in the Galactic stellar disk. We review and lay out what analysis and modeling machinery needs to be in place to test mechanism of disk galaxy evolution and to stringently constrain the Galactic gravitational potential, using such Galactic star-by-star measurements. We stress the crucial role of stellar survey selection functions in any such modeling; and we advocate the utility of viewing the Galactic stellar disk as made up of ‘mono-abundance populations’ (MAPs), both for dynamical modeling and for constraining the Milky Way’s evolutionary processes. We review recent work on the spatial and kinematical distribution of MAPs, and point out how further study of MAPs in the Gaia era should lead to a decisively clearer picture of the Milky Way’s dark-matter distribution and formation history.

中文翻译:

银河系的星盘

一系列绘制银河系的大量恒星调查,最终在盖亚任务中达到顶峰,正在彻底改变有关银河星盘中恒星分布和特性的经验信息。我们审查并列出了需要采用哪些分析和建模机制来测试盘状星系演化机制并严格限制银河引力势,使用此类逐星测量。我们强调恒星调查选择函数在任何此类建模中的关键作用;我们主张将银河星盘视为由“单一丰度种群”(MAP)组成的实用性,既用于动力学建模,也用于约束银河系的进化过程。我们回顾了最近关于 MAP 的空间和运动学分布的工作,
更新日期:2013-05-01
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