No Back-Side Infall into the Great Attractor
Abstract
This Letter presents the first results of a survey of the peculiar velocities of 1355 spiral galaxies in the southern sky using the Tully- Fisher relation to estimate their distances. The most important result of these measurements is that no back-side infall into the Great Attractor is found, contrary to the findings of Dressler & Faber; rather, evidence is found for a bulk flow of about 600 km s^-1^ on scales greater than 60 h^-1^ Mpc. This, when added to the bulk flow of 450 km s^-1^ recently found by Willick in the opposite part of the sky, suggests that there is bulk flow in the supergalactic plane over very large scales greater than 130 h^-1^ Mpc. The origin of this bulk flow is a puzzle.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1992
- DOI:
- 10.1086/186335
- Bibcode:
- 1992ApJ...389L...5M
- Keywords:
-
- Astrometry;
- Astronomical Photometry;
- Local Group (Astronomy);
- Red Shift;
- Spiral Galaxies;
- Astronomical Models;
- Charge Coupled Devices;
- H Alpha Line;
- Relic Radiation;
- Strange Attractors;
- Astrophysics;
- GALAXIES: DISTANCES AND REDSHIFTS;
- GALAXIES: KINEMATICS AND DYNAMICS;
- GALAXIES: PHOTOMETRY