A Test of the Lauer--Postman BUlk Flow

Details A Test of the Lauer--Postman BUlk Flow A Test of the Lauer--Postman BUlk Flow

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.9401g&link_type=abstract

American Astronomical Society, 187th AAS Meeting, #94.01; Bulletin of the American Astronomical Society, Vol. 27, p.1419

Astronomy and Astrophysics

Astronomy

Scientific paper

We use Tully--Fisher distances for a sample of late type, field spiral galaxies to test the Lauer and Postman (1994;LP) result suggestive of a bulk flow with respect to the Cosmic Microwave Background reference frame, of amplitude of +689 km s(-1) in the direction l=343(deg) , b=+52(deg) , and extending to very large spatial scales. A total of 268 galaxies, subdivided between two cones of one steradian each and pointed respectively toward the apex and antapex of the LP motion, are used. The peculiar velocities of the two data sets are inconsistent with a bulk flow of the amplitude claimed by LP.

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