A volume-limited sample of IRAS galaxies to 4000 km/s, 2: Neutral hydrogen observations from the Parkes telescope

Details A volume-limited sample of IRAS galaxies to 4000 km/s, 2: Neutral hydrogen observations from the Parkes telescope A volume-limited sample of IRAS galaxies to 4000 km/s, 2: Neutral hydrogen observations from the Parkes telescope

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..851r&link_type=abstract

The Astronomical Journal, vol. 108, no. 3, p. 851-861

Astronomy and Astrophysics

Astronomy

6

Cosmology, Hydrogen, Infrared Astronomy, Infrared Astronomy Satellite, Line Spectra, Mass, Near Infrared Radiation, Red Shift, Sampling, Sky Surveys (Astronomy), Spatial Distribution, Spectrum Analysis, Spiral Galaxies, Algorithms, Correlation, Data Reduction, Distance, Monte Carlo Method, Random Errors, Signal To Noise Ratios, Tables (Data), Variations, Velocity

Scientific paper

We have extracted a volume-limited sample of spiral galaxies within 4000 km/s from the Strauss et al. (1992) redshift survey of Infrared Astronomical Satellite (IRAS) galaxies. The purpose of the sample is to use distances obtained from the neutral hydrogen/near-infrared (I-band) Tully-Fisher relation to study deviations from uniform Hubble expansion. This will allow us to estimate the distribution of mass in the local universe and to place constraints on the value of the cosmological density parameter, omega 0. Here we report neutral hydrogen (H I) observations of 61 galaxies from this sample taken at the 64 m Parkes telescope, 48 of which resulted in measured linewidth parameters. Empirical estimates of random and systematic errors in H I line widths at low signal-to-noise ratio are described.

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