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, Bärbel S. Koribalski, D. Heath Jones, Tom H. Jarrett, Aidan C. Crook

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

We present new 21-cm neutral hydrogen (H I) 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 ratio H I spectra from which we extract 148 high-accuracy (<5 per cent error) velocity widths and derive reliable rotation velocities. The observed sample consists of 303 southern (δ < -40°) galaxies selected from the 2MASS Redshift Survey with Ks < 11.25 mag, cz<10 000 km s-1 and axis ratio b/a<0.5. The H I observations reported in this paper will be combined with new H I 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° and will provide a more reliable map of peculiar velocities in the local Universe.

Original languageEnglish
Pages (from-to)1178-1188
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Volume432
Issue number2
DOIs
Publication statusPublished - Jun 2013
Externally publishedYes

Bibliographical note

Copyright 2013 The Authors. First published in Monthly Notices of the Royal Astronomical Society, 432(2), pp.1178-1188. The original publication is available at http://doi.org/10.1093/mnras/stt555, published by Oxford University Press on behalf of the Royal Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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    Hong, T., Staveley-Smith, L., Masters, K. L., Springob, C. M., Macri, L. M., Koribalski, B. S., ... Crook, A. C. (2013). 2MTF - II. new parkes 21-cm observations of 303 southern galaxies. Monthly Notices of the Royal Astronomical Society, 432(2), 1178-1188. https://doi.org/10.1093/mnras/stt555