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Statistical masses of Abell clusters

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Abstract

The analysis of a homogeneous sample of 108 Abell clusters has led to an average peculiar velocity for the center of mass motion of these clusters of 610±750 km s−1. From this result, an upper limit for the average mass of the Abell clusters of (1.6±2.4)×1015 M ⊙ was obtained under the assumption that the peculiar motion is due to the excess of neighbours with respect to an uniform background. A lower limit of (2.4⊙2.9) x 1014 h -1Ω0.4 M ⊙ was derived if one assumes that the peculiar velocity results from the mutual acceleration with the nearest neighbour.

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  1. Departamento de Astronomia, CNPq-Observatorio Naciónal, São Cristovão, Rio de Janeiro, Brasil

    J. A. De Freitas Pacheco

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  1. J. A. De Freitas Pacheco
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De Freitas Pacheco, J.A. Statistical masses of Abell clusters. Astrophys Space Sci 105, 393–400 (1984). https://doi.org/10.1007/BF00651093

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  • DOI: https://doi.org/10.1007/BF00651093

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