Comparison between predictions of the density-wave theory and observational data
We present a compilation of spiral tracers with distance and radial velocity data that includes OB stars, supergiants and long period cepheids, in the region 260° < l < 340° and -5°< b < 5°. We obtain observed radial velocity residuals for those stars as the difference between the radial...
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| Formato: | Articulo Comunicacion |
| Lenguaje: | Español |
| Publicado: |
1988
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/142263 |
| Aporte de: |
| Sumario: | We present a compilation of spiral tracers with distance and radial velocity data that includes OB stars, supergiants and long period cepheids, in the region 260° < l < 340° and -5°< b < 5°. We obtain observed radial velocity residuals for those stars as the difference between the radial velocity relative to the LSR and the radial velocity calculated from a model of galactic rotation. The observed residuals are compared to the theoretical residuals that are obtained from the prediction of the density-wave theory (the Lind and Shu theory). We find coincidences in some particular region but, considering the overall picture, there is no significant agreement between theory and observation. |
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