On the galactocentric distance of the Sun and its rotation velocity.
The galactocentric distance of the sun is evaluated to be Ro=B.3 ± 0.9 kpc by the comparison of the rotation velocity functions .which are derived from the radial velocities of 113 cepheids and from that of the neutral hydrogen atoms, respectively. With the proper motions of 79 cepheids, this rotation velocity function yields the rotation velocity of the sun around the centre of the galaxy, w 0=34.0 ± 5.9 km sec -1 kpc- 1. The so-called unstable zone for cepheids between R=8.3~8.4 kpc does not appear in the residual velocities.
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| Format: | Journal Contribution biblioteca |
| Language: | English |
| Published: |
1961
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| Online Access: | http://hdl.handle.net/1834/16928 |
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