On the 3D Velocity Reconstruction of Clusters of Galaxies

Details On the 3D Velocity Reconstruction of Clusters of Galaxies On the 3D Velocity Reconstruction of Clusters of Galaxies

1997-07-17

arxiv.org/abs/astro-ph/9707198v1

Astronomy and Astrophysics

Astrophysics

to appear in Astrofizika, vol.40, 1997; LaTex, 4 pages, 1 figure, *.ps figure can be obtained from the authors

Scientific paper

The problem of reconstruction of the 3D velocities of clusters of galaxies from the redshift distribution of galaxies of the cluster is formulated. Though numerical simulations show the impossibility of direct use of Ambartsumian's formula derived for the stellar systems because of the small number of objects in the clusters, an additional physical assumption on the form of the searched velocity distribution can lead to the possibility of obtaining the transverse velocity of the cluster. The accuracy of the proposed reconstruction procedure is estimated.

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