The 2mass Tully–Fisher Survey: Mapping the mass in the Universe

Abstract

The 2mass Tully–Fisher Survey (2 mtf ) aims to measure Tully–Fisher (TF) distances for all bright, inclined spirals in the 2mass Redshift Survey (2 mrs ) using high-quality H i widths and 2mass photometry. Compared with previous peculiar-velocity surveys, the 2 mtf survey provides more accurate width measurements and more uniform sky coverage, combining observations with the Green Bank, Arecibo , and Parkes telescopes. With this new redshift-independent distance database, we will significantly improve our understanding of the mass distribution in the local Universe.