The Rotation Curve of our Galaxy

Wei Bin Shi; Gui Ping Ruan

doi:10.4028/www.scientific.net/AMM.614.685

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 614The Rotation Curve of our Galaxy

The Rotation Curve of our Galaxy

Abstract:

The rotation curve of our Galaxy is derived from a large sample of objects with known radial velocities and distances. We collect data as completely as possible, especially the data with accurately measured trigonometric parallaxes. These observations are used to construct a highly accurate rotation curve of the Galaxy. We discuss how to optimize the source selection for fitting the rotation curve. For each sample we adopted new selection criteria that remove data with large errors. We adopt the more reasonable Galactic constants R0 =8.0kpc, V0 = 220.0km/s. The results show that the fitting curve is a little bit higher for the outer Galaxy and lower for the inner Galaxy than previous results. For the first time we give out the errors of the formulary parameters.

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Periodical:

Applied Mechanics and Materials (Volume 614)

Pages:

685-688

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.614.685

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Online since:

September 2014

Authors:

Wei Bin Shi*, Gui Ping Ruan

Keywords:

Galaxies, Galaxy Structure -- Galaxies, Spiral-Galaxies

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