Pan-STARRS Photometry, GBT HI Observations, and Galaxy Distances

Pan-STARRS 光度测量、GBT HI 观测和星系距离

• 批准号: 0908846
• 负责人: R. Brent Tully
• 金额: $ 23.81万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908846&HistoricalAwards=false
• 关键词: Pan; STARRS; Photometry; GBT; HI

Dr Tully will continue his program of determining distances to nearby disk galaxies, using a relation between galaxy rotation speed and luminosity that has become known as the Tully-Fisher relation. He will measure luminosities from the new deep and uniform imaging surveys Panstarrs and SkyMapper, in the northern and southern sky respectively. He will find rotation speeds from the line-widths of neutral hydrogen emission measured at the Arecibo, GreenBank and Parkes radio telescopes. The immediate tasks are to tie the photometry from the new surveys into his earlier measurements, and to complete 3 neutral hydrogen surveys now in progress. Dr Tully will continue to expand his Extragalactic Distance Database, which brings together the diverse information needed for distance determinations and allows these to be put onto a common scale. The database now contains information for 50,000 galaxies, and is available on the web.A graduate student will be trained through involvement in the research. An enlarged Extragalactic Distance Database will be a resource both for the astronomical community and for public outreach. Earlier versions have been used to produce 3-D animations of the local distribution of galaxies, planetarium programs, and interactive software available through the American Museum of Natural History. Dr Tully will work with the SkySkan digital planetarium manufacturer and the Imiloa Astronomy Center to produce future 3-D visualizations.

塔利博士将继续他的计划，确定距离附近的磁盘星系，使用星系旋转速度和光度之间的关系，已成为众所周知的塔利-费舍尔关系。 他将分别在北方和南方天空测量新的深度和均匀成像调查Panstarrs和SkyMapper的光度。 他将从阿雷西博、格林班克和帕克斯射电望远镜测量的中性氢发射的线宽中找到旋转速度。 当前的任务是将新的测量中的测光与他以前的测量结合起来，并完成目前正在进行的3次中性氢测量。 塔利博士将继续扩大他的河外距离数据库，该数据库汇集了距离测定所需的各种信息，并允许将这些信息放在一个共同的尺度上。 该数据库现在包含5万个星系的信息，并可在网上查阅。 一个扩大的河外距离数据库将成为天文学界和公众宣传的一个资源。 早期的版本已被用于制作星系局部分布的3D动画，天文馆程序和美国自然历史博物馆提供的交互式软件。 Tully博士将与SkySkan数字天文馆制造商和Imiloa天文中心合作，制作未来的3D可视化。