The 2MASS Tully-Fisher Survey : Mapping the Mass in the Universe
T. Hong, L. Staveley-Smith, K. Masters, C. Springob, L. Macri, B., Koribalski, H. Jones, and T. Jarrett
TL;DR
The 2MASS Tully-Fisher Survey (2MTF) provides a comprehensive, high-quality dataset of galaxy distances to better understand the mass distribution in the local universe, improving upon previous surveys with more accurate measurements and uniform sky coverage.
Contribution
This survey introduces a new, high-quality, uniform dataset of galaxy distances using improved HI widths and 2MASS photometry, enhancing the mapping of mass in the universe.
Findings
More accurate galaxy width measurements.
Uniform sky coverage in the survey.
Enhanced understanding of local universe mass distribution.
Abstract
The 2MASS Tully-Fisher Survey (2MTF) aims to measure Tully-Fisher (TF) distances for all bright inclined spirals in the 2MASS Redshift Survey (2MRS) using high quality HI widths and 2MASS photometry. Compared with previous peculiar velocity surveys, the 2MTF 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.
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