EFAR peculiar velocities and bulk motions

Details EFAR peculiar velocities and bulk motions EFAR peculiar velocities and bulk motions

1999-09-03

arxiv.org/abs/astro-ph/9909062v1

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures, uses paspconf.sty, to appear in the proceedings of the Cosmic Flows workshop, Victoria B.C., Canada, July

Scientific paper

The EFAR project has measured peculiar motions in two distant volumes of the universe using Fundamental Plane (FP) distances for 85 clusters with cz=6000-15000 km/s. The scatter in distance about the FP is observed to be 20% per galaxy for EFAR sample, resulting in peculiar velocities with a median precision of 1075 km/s for the 50 clusters with 3 or more galaxies. We find that there is no evidence for a large bulk flow within either of the two volumes sampled by the EFAR clusters. The measured bulk motion in both regions is small and consistent with zero. The Lauer and Postman (1994) bulk motion is ruled out at the 4-sigma level. There is no evidence supporting the SMAC (Hudson et al. 1999) or LP10K (Willick 1999) bulk motions, but the directionality of the EFAR sample would only allow a weak (2-sigma) detection at best.

Affiliated with

Also associated with

No associations

Rating

EFAR peculiar velocities and bulk motions 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 EFAR peculiar velocities and bulk motions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EFAR peculiar velocities and bulk motions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-542908