Components of the open cluster system of the Galaxy from kinematic analysis

Details Components of the open cluster system of the Galaxy from kinematic analysis Components of the open cluster system of the Galaxy from kinematic analysis

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26at...25..189n&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 25, Issue 2, p.189-194

Astronomy and Astrophysics

Astronomy

1

Galaxy, Open Clusters, Kinematics, Structure, Galactic Centre Distance, Distance Scale

Scientific paper

The possibility of using open clusters as reference objects in kinematic analysis including the estimation of the distance to the Galactic centre is investigated. This analysis has produced distinctly different results for three components of the Galactic open cluster system: clusters of young, intermediate and old ages. We revealed that kinematic analysis of only young clusters (lgt R0. Old remote clusters (lgt > 8.8) can stabilize the solution but they seem to have a significantly underestimated distance scale (formal estimates of R0 ≈ 6 ± 0.7kpc ).

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