NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-09-22 T08:03:54 PDT
Help | Comment | NED Home

For refcode 2009AJ....138.1938C:
Retrieve 13375 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2009AJ....138.1938C The Extragalactic Distance Database: All Digital H I Profile Catalog Courtois, Helene M.; Tully, R. Brent; Fisher, J. Richard; Bonhomme, Nicolas; Zavodny, Maximilian; Barnes, Austin Abstract. An important component of the Extragalactic Distance Database is a group of catalogs related to the measurement of H I line profile parameters. One of these is the All Digital H I catalog which contains an amalgam of information from new data and old. The new data result from observations with Arecibo and Parkes Telescopes and with the Green Bank Telescope, including continuing input since the award of the NRAO Cosmic Flows Large Program. The old data have been collected from archives, wherever available, particularly the Cornell University Digital H I Archive, the Nancay Telescope extragalactic H I archive, and the Australia Telescope H I archive. The catalog currently contains information on ~15, 000 profiles relating to ~13, 000 galaxies. The channel-flux per channel files, from whatever source, is carried through a common pipeline. The derived parameter of greatest interest is W_ m50_, the profile width at 50% of the mean flux. After appropriate adjustment, the parameter W_mx_ is derived, the line width that statistically approximates the peak-to-peak maximum rotation velocity before correction for inclination, 2V_max_sini. Key words: astronomical data bases: miscellaneous, catalogs, galaxies: distances and redshifts, radio lines: galaxies
Retrieve 13375 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home