arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1605.00515astro-ph.GAastro-ph.IM
收藏

Gaia-ESO巡天:Milky Way场星的选择功能

The Gaia-ESO Survey: the selection function of the Milky Way field stars

E. Stonkute, S. E. Koposov, L. M. Howes, S. Feltzing, C. C. Worley, G. Gilmore, G. R. Ruchti, G. Kordopatis, S. Randich, T. Zwitter, T. Bensby, A. Bragaglia, R.… 展开作者

E. Stonkute, S. E. Koposov, L. M. Howes, S. Feltzing, C. C. Worley, G. Gilmore, G. R. Ruchti, G. Kordopatis, S. Randich, T. Zwitter, T. Bensby, A. Bragaglia, R. Smiljanic, M. T. Costado, G. Tautvaisiene, A. R. Casey, A. J. Korn, A. C. Lanzafame, E. Pancino, E. Franciosini, A. Hourihane, P. Jofre, C. Lardo, J. Lewis, L. Magrini, L. Monaco, L. Morbidelli, G. G. Sacco, L. Sbordone

摘要:

盖亚-ESO调查旨在瞄准所有主要的银河系组成部分(即,凸起,薄和厚盘,晕和集群),其目标是限制银河系的化学和动力学演化。本文介绍的方法和考虑因素,推动选择有针对性的,分配和成功观察银河系场星。为了正确地分析和解释调查数据,需要详细了解调查结构,特别是目标选择标准对观测到的银河系场恒星的影响。给出了VLT/FLAMES观测银河系场恒星的目标选择过程,并给出了衡量巡天目标选择的权重。权重可用于解释科学研究中Gaia-ESO调查数据的选择效应。我们提供了几个简单的例子,以强调在银河系的恒星星族的研究,包括这些信息的必要性。

英文摘要:

The Gaia-ESO Survey was designed to target all major Galactic components (i.e., bulge, thin and thick discs, halo and clusters), with the goal of constraining the chemical and dynamical evolution of the Milky Way. This paper presents the methodology and considerations that drive the selection of the targeted, allocated and successfully observed Milky Way field stars. The detailed understanding of the survey construction, specifically the influence of target selection criteria on observed Milky Way field stars is required in order to analyse and interpret the survey data correctly. We present the target selection process for the Milky Way field stars observed with VLT/FLAMES and provide the weights that characterise the survey target selection. The weights can be used to account for the selection effects in the Gaia-ESO Survey data for scientific studies. We provide a couple of simple examples to highlight the necessity of including such information in studies of the stellar populations in the Milky Way.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑