Pirin Erdogdu (UCL, London)

The 2MASS Redshift Survey: Reconstructed Density and Velocity Fields and the Local Group Dipole
Wann Am 14.03.2012 von 11:00 bis 12:00
  • Kolloquium
Wo SH, Seminarraum
Termin übernehmen vCal / iCal

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.