Abstract
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. This makes 6dFGS the largest peculiar-velocity sample to date. We have fitted the FP with a tri-variate Gaussian model using a maximum-likelihood approach, and derive the Bayesian probability distribution of the peculiar velocity for each of the 10,000 galaxies. We fit models of the velocity field, including comparisons to the field predicted from the redshift-survey density field, to derive the values of the redshift-space distortion parameter β, the bulk flow and the residual bulk flow in excess of that predicted from the density field. We compare these results to those derived by other authors and discuss the cosmological implications.
Original language | English |
---|---|
Title of host publication | Advancing the Physics of Cosmic Distances |
Editors | Richard de Grijs |
Place of Publication | Cambridge |
Publisher | Cambridge University Press |
Pages | 269-273pp |
DOIs | |
Publication status | Published - 2013 |
Event | Advancing the Physics of Cosmic Distances - Beijing, China, China Duration: 1 Jan 2013 → … http://journals.cambridge.org/action/displayIssue?jid=IAU&volumeId=8&seriesId=0&issueId=S289 |
Conference
Conference | Advancing the Physics of Cosmic Distances |
---|---|
Country/Territory | China |
Period | 1/01/13 → … |
Other | 27-31 Aug 2012 |
Internet address |