|Title||Kinematics of the Local Universe. XIII. 21-cm line measurements of 452 galaxies with the Nançay radiotelescope, JHK Tully-Fisher relation, and preliminary maps of the peculiar velocity field |
|Authors||Theureau, G.; Hanski, M. O.; Coudreau, N.; Hallet, N.; Martin, J. -M. |
2007A&A...465...71T Search ADS ↗
|Abstract||Aims:This paper presents 452 new 21-cm neutral hydrogen line measurements carried out with the FORT receiver of the meridian transit Nançay radiotelescope (NRT) in the period April 2003-March 2005. |
Methods: This observational programme is part of a larger project aiming at an exhaustive and magnitude-complete HI extragalactic catalogue for Tully-Fisher applications (the so-called KLUN project, for Kinematics of the Local Universe studies, to end in 2008). The whole on-line HI archive of the NRT today contains reduced HI-profiles for 4500 spiral galaxies of declination δ > -40° (http://klun.obs-nancay.fr).
Results: As an example of this application, we used the direct Tully-Fisher relation in three (JHK) bands in deriving distances to a large catalogue of 3126 spiral galaxies distributed through the whole sky and sampling the radial velocity range well between 0 and 8000 km s-1. Thanks to an iterative method accounting for selection bias and smoothing effects, we show a detailed and original map of the velocity field in the Local Universe as a preliminary output. Data Tables [see full text], [see full text], and [see full text] and HI-profiles (Fig. [see full text]) are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (184.108.40.206) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/465/71
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