Ongoing Accretion onto a Galactic Disk and Primordial Galaxies

银河盘和原始星系的持续吸积

• 批准号: 1410800
• 负责人: Mary Putman
• 金额: $ 27.57万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1410800&HistoricalAwards=false
• 关键词: Ongoing; Accretion; onto; Galactic; Disk

This program will develop a better understanding of the way in which fuel for star formation settles into the galactic disk of the Milky Way from the intergalactic medium. This goal will be accomplished through the use of survey data from the Arecibo Observatory that helps trace the location of gas in and near our Milky Way galaxy. Broader impacts of the work include training of undergraduate and graduate students. The project will have a direct impact on society through a program that brings astronomers into diverse middle schools throughout New York City. The goal is to inspire students at a juncture where they often choose to turn towards or away from science.Dr. Putman and her students will construct a multiphase map of the interface between the disk and halo of the Milky Way through the combination of a catalog of clouds from the GALFA-HI Survey, examination of their dust content, and comparisons to models and multi-wavelength observational data. The process of cooling at the disk-halo interface will be explored, as well as the interplay between accretion and feedback in controlling the star formation rate.

这个项目将使人们更好地了解恒星形成的燃料是如何从星系间介质进入银河系的星系盘的。这一目标将通过使用阿雷西博天文台的调查数据来实现，该数据有助于追踪银河系内外气体的位置。这项工作更广泛的影响包括培养本科生和研究生。该项目将通过一个将天文学家引入纽约市不同中学的项目，对社会产生直接影响。目标是在学生们经常选择转向或远离科学的关键时刻激励他们。Putman和她的学生将通过结合GALFA-HI调查的云目录，检查它们的尘埃含量，并与模型和多波长观测数据进行比较，构建银河系盘和晕之间界面的多相图。将探索盘晕界面的冷却过程，以及吸积和反馈在控制恒星形成速率方面的相互作用。