Astronomy and Astrophysics, volume 646A, 113-113 (2021/2-1)
Toward Cosmicflows-4: The HI data catalog.
DUPUY A., COURTOIS H.M., GUINET D., TULLY R.B. and KOURKCHI E.
Abstract (from CDS):
Aims.In this study, we present an update of a compilation of line width measurements of neutral atomic hydrogen (HI) galaxy spectra at 21 cm wavelength. Our All Digital HI (ADHI) catalog consists of the previous release augmented with our new HI observations and an analysis of archival data. This study provides the required HI information to measure the distances of spiral galaxies through the application of the Tully-Fisher (TF) relation.
Methods. We conducted observations at the Green Bank telescope (GBT) and reprocessed spectra obtained at the Nancay radiotelescope by the NancayInterstellar Baryons Legacy Extragalactic Survey and Kinematics of the Local Universe collaborations and we analyzed the recently published full completion Arecibo Legacy Fast ALFA (ALFALFA) 100% survey in order to identify galaxies with good quality HI line width measurements.
Results. This paper adds new HI data adequate for TF use for 385 galaxies observed at GBT, 889 galaxies from archival Nancay spectra, and 1515 rescaled Arecibo ALFALFA spectra.In total, this release adds 1274 new good quality measurements to the ADHI catalog. Today, the ADHI database contains 18874 galaxies, for which 15433 have good quality data for TF use. The final goal is to compute accurate distances to spiral galaxies, which will be included in the next generation of peculiar velocities catalog: Cosmicflows-4.
© A. Dupuy et al. 2021
methods: observational - line: profiles - catalogs - galaxies: distances and redshifts
VizieR on-line data:
<Available at CDS (J/A+A/646/A113): table2.dat table3.dat table4.dat img/*>
Status at CDS
Tables of objects mostly ingested in SIMBAD; some problems could not be solved.
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