Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229....1a&link_type=abstract
Astrophysical Journal, Part 1, vol. 229, Apr. 1, 1979, p. 1-13.
Astronomy and Astrophysics
Astronomy
244
Cosmology, Galactic Clusters, H Lines, Infrared Astronomy, Luminous Intensity, Spectral Line Width, Astronomical Photometry, Data Reduction, Radio Sources (Astronomy), Virgo Galactic Cluster
Scientific paper
The Tully-Fisher (1977) relation between absolute blue magnitudes and H I profile widths of galaxies is investigated on the basis of IR photometry (particularly H magnitudes) for 11 spiral galaxies in Virgo and 18 in the Ursa Major cluster. The results confirm the hypothesis that extinction is a major source of scatter in the Tully-Fisher relation. A tighter empirical correlation is discovered in the two clusters by using H magnitudes uncorrected for inclination. The true form of the relationship is found to be a power law whereby luminosity is proportional to the fourth power of rotation velocity. The IR relation is applied to the distance scale, and preliminary results are obtained. These include respective distance moduli of about 31.07 and 31.06 for the Virgo and Ursa Major clusters as well as a Hubble constant of 61 + or - 4 km/s per Mpc.
Aaronson Marc
Huchra John
Mould Jeremy
No associations
LandOfFree
The infrared luminosity/H I velocity-width relation and its application to the distance scale does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The infrared luminosity/H I velocity-width relation and its application to the distance scale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The infrared luminosity/H I velocity-width relation and its application to the distance scale will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1435034