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

Tully博士将继续他的计划，利用星系自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。他将分别在北部和南部天空测量新的深度和统一成像测量Panstarars和SkyMapper的光度。他将通过阿雷西博、格林班克和帕克斯射电望远镜测量到的中性氢发射的线宽来计算自转速度。当务之急是将新测量的光度与他之前的测量结果联系起来，并完成目前正在进行的3项中性氢测量。塔利博士将继续扩展他的银河系外距离数据库，该数据库将距离确定所需的各种信息汇集在一起，并允许将这些信息放在一个共同的尺度上。该数据库现在包含了50,000个星系的信息，并可在网上获得。一名研究生将通过参与研究来接受培训。扩大的银河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互动软件。塔利博士将与SkySkan数字天文馆制造商和伊米洛亚天文中心合作，制作未来的3-D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.