1161 articles – 795 references  [version française]
HAL: hal-00000658, version 1

Detailed view  Export this paper
KLUN+ peculiar velocity survey
M. Hanski 1
(2003-09-30)

The enhanced Kinematics of the Local Universe (KLUN+) galaxy sample is a collection of galaxies suitable for Tully-Fisher (TF)or Faber-Jackson (FJ) distance estimation. Here we extract a subsampleof 6229 KLUN+ galaxies closer than 80 Mpc/h, and calculate theirdistances and peculiar velocities with the Iterative Normalized Distance method. Within this method we can derive an analytical formula,independent from the density inhomogeneities, for correcting the selection biases. The radial peculiar velocities can then be derivedfrom the redshifts and the corrected distances.The velocities are smoothed,and the smoothed velocity field is used as a correction term at the nextderivation of normalized distances. This iterative procedure is repeateduntil converging values are reached.Here we present the resulting map of the radial peculiar velocity field at the < 80 Mpc/h environment. The infall patterns towards the maingalaxy clusters are clearly visible.The color version of the map, other figures,and animations are provided on the project web site.
1:  Laboratoire de physique et chimie de l'environnement (LPCE)
CNRS : UMR6115 – INSU – Université d'Orléans
Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics
cosmology – large-scale structure
Attached file list to this document: 
PS
hanski.ps(3.4 MB)
PDF
hanski.pdf(746.4 KB)