Comparing the SBF Survey Velocity Field with the Gravity Field from Redshift Surveys

Details Comparing the SBF Survey Velocity Field with the Gravity Field from Redshift Surveys Comparing the SBF Survey Velocity Field with the Gravity Field from Redshift Surveys

1999-10-19

arxiv.org/abs/astro-ph/9910342v1

Astronomy and Astrophysics

Astrophysics

8 LaTex pages with 6 figures. To appear in the proceedings of the "Cosmic Flows" workshop, held in Victoria, Canada, July 1999

Scientific paper

We compare the predicted local peculiar velocity field from the IRAS 1.2 Jy flux-limited redshift survey and the Optical Redshift Survey (ORS) to the measured peculiar velocities from the recently completed SBF Survey of Galaxy Distances. The analysis produces a value of \beta = \Omega^{0.6}/b for the redshift surveys, where b is the linear biasing factor, and a tie to the Hubble flow, i.e., a value of H_0, for the SBF Survey. There is covariance between these parameters, but we find good fits with H_0 \approx 74 \kmsM for the SBF distances, \beta_I \approx 0.44 for the IRAS survey predictions, and \beta_O \approx 0.3 for the ORS. The small-scale velocity error \sigv \sim 200 \kms is similar to, though slightly larger than, the value obtained in our parametric flow modeling with SBF.

Affiliated with

Also associated with

No associations

Rating

Comparing the SBF Survey Velocity Field with the Gravity Field 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 Comparing the SBF Survey Velocity Field with the Gravity Field from Redshift Surveys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparing the SBF Survey Velocity Field with the Gravity Field from Redshift Surveys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-361560