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Galactic parameters derived from open-cluster data

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Abstract

The components U 0 and V 0 of the solar motion and the Oort constant A 0 are determined using the data of a homogeneous open-cluster catalog with corrected distance moduli. The results are based on a sample of 146 open clusters with known radial velocities located in the Galactic plane (b<7°) within 4 kpc of the Sun. The solar Galactocentric distance R 0 is determined using two kinematic methods. The following results are obtained: A 0=17.0±0.9 km/s kpc, U 0=10.5±1.0 km/s, V 0=11.5±1.1 km/s, R 0=8.3±0.3 pc.

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  1. Astronomical Observatory, Ural State University, Yekaterinburg, Russia

    T. P. Gerasimenko

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  1. T. P. Gerasimenko
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__________

Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 81, No. 2, 2004, pp. 124–128.

Original Russian Text Copyright © 2004 by Gerasimenko.

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Gerasimenko, T.P. Galactic parameters derived from open-cluster data. Astron. Rep. 48, 103–107 (2004). https://doi.org/10.1134/1.1648073

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