Eggen's Stellar Groups - Galaxy's Spiral Pattern Speed Test

Details Eggen's Stellar Groups - Galaxy's Spiral Pattern Speed Test Eggen's Stellar Groups - Galaxy's Spiral Pattern Speed Test

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986atsir1462....1k&link_type=abstract

Astronomicheskii Tsirkulyar NO. 1462/OCT, 1986

Astronomy and Astrophysics

Astronomy

Scientific paper

The dependence of the kinematic age of stellar groups on the value of angular velocity of the galactic spiral pattern is numerically investigated. The change of Ωp from 13 to 23 km s-1kpc-1 increases the kinematic age of stellar groups from 7×108 to 4×109years. The existence of old stellar groups (T ≡ 5×109years) in the neighbourhood of the Sun confirms values of Ωp ≡ 23 - 25 km s-1kpc-1.

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