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

Tully博士将继续他的计划，利用星系旋转速度和光度之间的关系，即众所周知的Tully- fisher关系，来确定到附近盘状星系的距离。他将分别从Panstarrs和SkyMapper的新深度和均匀成像调查中测量北部和南部天空的亮度。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线宽中找到自转速度。当前的任务是将新调查的光度测量与他之前的测量结果联系起来，并完成目前正在进行的3次中性氢调查。Tully博士将继续扩展他的星系外距离数据库，该数据库汇集了确定距离所需的各种信息，并允许将这些信息放在一个共同的尺度上。这个数据库现在包含了5万个星系的信息，可以在网上找到。研究生将通过参与研究而得到训练。扩大后的星系外距离数据库将成为天文学界和公众宣传的资源。早期的版本已经被用来制作当地星系分布的3d动画，天文馆程序，以及通过美国自然历史博物馆提供的交互式软件。Tully博士将与skykan数字天文馆制造商和Imiloa天文中心合作，制作未来的3d可视化图像。

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.