A survey of the types of stars and massive planets that make up binary pairs in the Milky Way Galaxy

对银河系中构成双星对的恒星和大质量行星类型的调查

基本信息

批准号：
1616636
负责人：
Steven Majewski
金额：
$ 33.59万
依托单位：
University of Virginia Main Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-15 至 2021-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1616636&HistoricalAwards=false
关键词：
survey types stars massive planets

项目摘要

Scientists from the University of Virginia and Northern Kentucky University will work together to count how many stars in the Milky Way galaxy exist in pairs. Using an instrument that splits the light from each star into a "spectrum" they will show if each pair is made up of large or small stars, hot or cold stars, old or young stars. With this information astronomers can better understand how stars form in the Milky Way, and how important being a member of a pair can be to the birth of planets. The light from over 163,000 stars will be analyzed over a three year period by graduate and undergraduate students from each university. The data will be obtained using the Sloan Foundation Telescope at the Apache Point Observatory in New Mexico and the Irénée du Pont Telescope at Las Campanas Observatory in Chile.This is a collaborative proposal between Steven Majewski of the University of Virginia (UVa) and Nathan De Lee of Northern Kentucky University (NKU). Together with graduate and undergraduate students at both universities, these researchers propose to analyze Apache Point Observatory Galactic Evolution Experiment (APOGEE) radial velocity survey data of 163,000 stars spread throughout the galaxy (disk, halo and bulge) to search for companions to stars with a broad range of stellar spectral types, metallicities, and ages. They will exploit data acquired as part of the SDSS-III/APOGEE-1 high-resolution IR spectroscopic survey, which has already observed over 14,000 stars in multiple (dozens of) epochs. The proposers will complement these data with a new survey, SDSS-IV/APOGEE-2, to extend temporal baselines and the number of observed sources. Their goal is to determine the frequency of companions as a function of host star chemistry, dynamics, evolutionary stage, position in the Milky Way, and environment. They also propose follow-up near-IR speckle interferometric observations of a sample of targets using a new speckle camera on the WIYN telescope, which they plan to build with funds from this award. A pilot spectroscopic survey based on APOGEE-1 data has already produced samples of stellar, brown dwarf, and hot Jupiter companions in a few hundred systems. Dr. Majewski is the PI of both the APOGEE-1 and APOGEE-2 projects.

来自弗吉尼亚州和北部和北方的科学家将共同计算有银河系中有多少恒星，从星星列出了恒星的光线。恒星，年轻的恒星。并使用每所大学的学生使用Sloan Foundation望远镜在新墨西哥州的Apache Point Point Verscope和智利的Las Campanas天文台的IrénéeDuPont Telescope。 Nathan de Lee（NKU）（NKU）。 SDSS-III/Apogee-1高分辨率IR光谱调查的一部分，已经观察到多个恒星的多个恒星将通过新的调查来补充这些数据，以扩展SDSS-IV/Apogee-2他们的目标是确定伴侣的频率，作为y族人的进化阶段，在银河系中的位置和环境。 IS奖励。