HYPERLEDA. II. Homogenized HI data (Paturel+, 2003)

Details HYPERLEDA. II. Homogenized HI data (Paturel+, 2003) HYPERLEDA. II. Homogenized HI data (Paturel+, 2003)

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat.7238....0p&link_type=abstract

VizieR On-line Data Catalog: VII/238. Originally published in: 2003A&A...412...57P

Mathematics

Galaxy Catalogs, H I Data, Radial Velocities

Scientific paper

After a compilation of HI data from 611 references and new observations made in Nancay, we produce a catalog of homogenized HI data for 16781 galaxies. The homogenization is made using the EPIDEMIC method from which all data are progressively converted into the adopted standard. The result is a catalog giving: 1) the logarithm of twice the maximum rotation velocity, log2VMsini, converted to the system of Mathewson et al. (1996ApJS..107...97M). This quantity is given without correction for inclination; 2) the HI magnitude, m21, (area of the 21-cm line width expressed in magnitude) converted to the flux system of Theureau et al. (1998A&AS..130..333T); 3) the HI velocity, VHI, expressed with the optical definition (i.e., using wavelengths instead frequencies). The typical uncertainties are: 0.04 for log2VMsini, 0.25mag for m21 and 9km/s for VHI.
(4 data files).

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