On the galactocentric distance of the Sun and its rotation velocity.
Two methods to evaluate R0 and w0 , using radial velocities and proper motions of cepheids, are introduced: (i). R0 can be derived by evaluating R0 Δ w against Δ R for various values of R0 under the condition that R0 Δ w =0 at R=R0, and (ii). w0 can be derived by evaluating w against Δ R, and the ratio of Ro Δ w to Δ w gives R 0. Using Irwin's data on cepheids, above methods yield R0= 8.6kpc,_and wo= 29.0 ± 9.0 km sec-1 kpc-1.These values are favorable for excluding the inconsistency existing between the available values of R0 w0 and Vo.
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| Format: | Journal Contribution biblioteca |
| Language: | English |
| Published: |
1960
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| Online Access: | http://hdl.handle.net/1834/16936 |
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