We develop a robust Bayesian model to derive peculiar velocities and Fundamental Plane (FP) distances for a subsample of 9000 galaxies from the 6dF Galaxy Survey (6dFGS). These galaxies form the basis of 6dFGSv, the largest and most uniform galaxy peculiar-velocity sample to date. We perform a Bayesian analysis of the data set as a whole, determining cosmological parameters from the peculiar-velocity field (e.g., fitting β and the bulk flow), by comparing to the field predicted from the redshift survey and assuming that the galaxy distribution traces the matter distribution.
|Name||Proceedings of the International Astronomincal Union|
|Publisher||Cambridge University Press|
|Conference||International Astronomical Union Symposium (289th : 2012)|
|Period||27/08/12 → 31/08/12|
- galaxies: distances and redshifts
- cosmological parameters
- large-scale structure of universe