Volume 465, Number 1, April I 2007
|Page(s)||71 - 85|
|Published online||19 December 2006|
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
LPCE/CNRS UMR6115, 3A Av. de la recherche scientifique, 45071 Orléans Cedex 02, France e-mail: firstname.lastname@example.org
2 Observatoire de Paris/Meudon, GEPI/CNRS URA1757, 92195 Meudon Principal Cedex, France
3 Tuorla observatory, University of Turku, 21500 Piikkiö, Finland
Accepted: 3 November 2006
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 (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.
Key words: astronomical data bases: miscellaneous / surveys / galaxies: kinematics and dynamics / radio lines: galaxies
© ESO, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.