Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.0705p&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #07.05; Bulletin of the American Astronomical Society, Vol. 33, p.796
Astronomy and Astrophysics
Astronomy
Scientific paper
We present deep, multicolor CCD photometry for a sample of over 300 field spiral galaxies with V0 < 3000 km/sec. These data are combined with rotational velocities derived from 21-cm line-widths and redshift-independent distances are measured using the luminosity--line-width relation. The velocity field within this region is examined and individual peculiar velocities are computed by subtracting a uniform Hubble expansion field. The relatively dense sampling afforded by these data reveals systematic peculiar motions associated with the non-uniform distribution of matter, particularly with the region within a distance of 10 Mpc. We also find larger-scale systematic flows and characterize these using a simple analytic model. The prospects for a more detailed analysis are briefly discussed.
Pierce Michael J.
Tully Brent R.
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