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arXiv · 1304.0882

2MTF II. New Parkes 21-cm observations of 303 southern galaxies

Tao Hong·Lister Staveley-Smith·Karen L. Masters·Christopher M. Springob·Lucas M. Macri·Barbel S. Koribalski·D. Heath Jones·Tom H. Jarrett·Aidan C. Crook
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Abstract

We present new 21-cm neutral hydrogen (HI) observations of spiral galaxies for the 2MASS Tully Fisher (2MTF) survey. Using the 64-m Parkes radio telescope multibeam system we obtain 152 high signal-to-noise HI spectra from which we extract 148 high-accuracy (< 5% error) velocity widths and derive reliable rotation velocities. The observed sample consists of 303 southern (\delta < -40\deg) galaxies selected from the MASS Redshift Survey (2MRS) with K_s <11.25 mag, cz < 10,000 km/s and axis ratio b/a < 0.5. The HI observations reported in this paper will be combined with new HI spectra from the Green Bank and Arecibo telescopes, together producing the most uniform Tully-Fisher survey ever constructed (in terms of sky coverage). In particular, due to its near infrared selection, 2MTF will be significantly more complete at low Galactic latitude (|b|<15\deg) and will provide a more reliable map of peculiar velocities in the local universe.

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Tao Hong, Lister Staveley-Smith, Karen L. Masters, Christopher M. Springob, Lucas M. Macri, Barbel S. Koribalski, D. Heath Jones, Tom H. Jarrett, Aidan C. Crook. 2013-04-03. 2MTF II. New Parkes 21-cm observations of 303 southern galaxies. https://doi.org/10.1093/mnras/stt555

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