Thin edge-on galaxies as a tool for the investigation of large-scale streaming motions in the universe

Details Thin edge-on galaxies as a tool for the investigation of large-scale streaming motions in the universe Thin edge-on galaxies as a tool for the investigation of large-scale streaming motions in the universe

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97.1566k&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, June 1989, p. 1566-1575. Research supported by NSF and National Astronomy and Io

Astronomy and Astrophysics

Astronomy

36

Cosmology, Galactic Evolution, Galaxies, Universe, Astronomical Catalogs, H Lines, Hubble Space Telescope, Red Shift, Spectral Line Width

Scientific paper

A sample of 324 galaxies observed at Arecibo is used to demonstrate that thin edge-on galaxies can be used to study large-scale streaming motions in the universe. It is found that the scatter of galaxies in the Tully-Fisher (TF) diagram steadily decreases when the axial ratio a/b increases, and that for the flattest and most inclined galaxies (a/b of greater than 7), the scatter in the TF diagram yields a rms error in distance estimates of 10 exp + or - 0.09. A proposed catalogue of flat galaxies is described.

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