Pirin Erdogdu (UCL, London)

The 2MASS Redshift Survey: Reconstructed Density and Velocity Fields and the Local Group Dipole
When Mar 14, 2012 from 11:00 AM to 12:00 PM
What
  • Colloquium
Where SH, Seminar room
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We present the updated reconstructed real-space density and velocity fields from the final release of the Two Mass Redshift Survey (2MRS) which includes 44,599 galaxies with extinction corrected magnitudes brighter than Ks = 11.75. Compared to the previous release which had a magnitude limit of Ks = 11.25, this fainter magnitude limit allows us to sample more distant parts of the local Universe, like the Shapley Supercluster. For our best χ2 fit value of β = 0.4, the amplitude of the Local Group (LG) dipole is lower than but consistent with the LG velocity inferred from the CMB at the 2σ level.