Abstract
Abstract Using a homogeneous sample of 245 young galactic clusters, the characteristics of the spiral pattern of our Galaxy are estimated. The rotation velocity of the spiral pattern is determined to be Ωp = 21.3 km/s/kpc, and the pitch angle of the best-fit logarithmic spiral is i = 7˚.8. The Sagittarius and Perseus arms form a two-armed structure, whereas the Orion arm probably represents the next even mode of the spiral wave. The majority of galactic clusters fit well the obtained spiral structure, which supports the idea of the density-wave driven star formation.
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Schedule a callMore From: Astronomical and Astrophysical Transactions, Vol. 33, No. 3
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