The 6dFGS Peculiar Velocity Field

Details The 6dFGS Peculiar Velocity Field The 6dFGS Peculiar Velocity Field

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933601s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #336.01

Mathematics

Probability

Scientific paper

The 6dF Galaxy Survey (6dFGS) is an all southern sky galaxy survey, including 125,000 redshifts and a Fundamental Plane (FP) subsample of 10,000 peculiar velocities, making it the largest peculiar velocity sample to date. We have fit the FP using a maximum likelihood fit to a tri-variate Gaussian. We subsequently compute a Bayesian probability distribution for every possible peculiar velocity for each of the 10,000 galaxies, derived from the tri-variate Gaussian probability density distribution, accounting for our selection effects and measurement errors. We construct a predicted peculiar velocity field from the 2MASS redshift survey, and compare our observed 6dFGS velocity field to the predicted field. We discuss the resulting agreement between the observed and predicted fields, and the implications for measurements of the bias parameter and bulk flow.

Affiliated with

Also associated with

No associations

Rating

The 6dFGS Peculiar Velocity Field 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 The 6dFGS Peculiar Velocity Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 6dFGS Peculiar Velocity Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1580693