We present H i 21 cm observations of 1194 galaxies out to a redshift of 10 000 km s−1 selected as inclined spirals (i ≳ 60°) from the 2MASS redshift survey. These observations were carried out at the National Radio Astronomy Observatory Robert C. Byrd Green Bank Telescope (GBT). This observing programme is part of the 2MASS Tully–Fisher (2MTF) survey. This project will combine H i widths from these GBT observations with those from further dedicated observing at the Parkes Telescope, from the Arecibo Legacy Fast Arecibo L-band Feed Array survey at Arecibo, and S/N > 10 and spectral resolution vres < 10 km s−1 published widths from a variety of telescopes. We will use these H i widths along with 2MASS photometry to estimate Tully–Fisher distances to nearby spirals and investigate the peculiar velocity field of the local Universe. In this paper, we report on detections of neutral hydrogen in emission in 727 galaxies, and measure good signal to noise and symmetric H i global profiles suitable for use in the Tully–Fisher relation in 484.
- galaxies: distances and redshifts
- galaxies: kinematics and dynamics
- galaxies: spiral
- radio lines: galaxies