Astronomy and Astrophysics – Astrophysics
Scientific paper
1994-01-28
Mon.Not.Roy.Astron.Soc. 268 (1994) 943
Astronomy and Astrophysics
Astrophysics
tar-compressed and uudecoded postscript files, 12 pages+8 figures
Scientific paper
The reconstruction of the peculiar velocity field from the 1.936~Jy iras selected sample of galaxies is compared to a similar reconstruction from an optically selected sample. A general method for combining different samples to reconstruct a self-consistent density and peculiar velocity field is presented. The method is applied to determine how sensitive the derived peculiar velocity field is to the characteristics of the sample used. The possibility that the iras galaxies do not trace the general galaxy population is explored adopting a simple model of linear biasing between the iras and optical samples. We find that the velocity fields derived from the two samples are consistent, within the estimated shot noise error, for the case of no relative bias. This result suggests that the predicted peculiar velocity field based on iras samples is not sensitive to the sampling properties of iras galaxies. Combined with previous suggestion of a relative biasing of iras galaxies on small scales (about 5 h^-1Mpc), this result suggests scale dependent biasing.
da Costa Luiz Nicolaci
Freudling Wolfram
Pellegrini Paulo S. S.
No associations
LandOfFree
Testing the Peculiar Velocity Field predicted from Redshift Surveys 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 Testing the Peculiar Velocity Field predicted from Redshift Surveys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing the Peculiar Velocity Field predicted from Redshift Surveys will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-350509