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| Paper: |
Improvements of the CORS method - Radii and masses of RR Lyrae stars |
| Volume: |
11, Confrontation Between Stellar Pulsation and Evolution |
| Page: |
116 |
| Authors: |
Cucurachi, M.; Barone, F.; di Fiore, L.; Milano, L.; Russo, G. |
| Abstract: |
All recent analyses of RR Lyrae stars show that the (V - K) color index is well suited to parameterize SV. The CORS method is used to compute new radii determinations for SW Dra and X Ari, taking into account even slight deviations from the single valued relation between SV and (V - K), assuming therefore the spectroscopically determined effective gravity curve as a second independent degree of freedom. A radius of 5.6 solar radii is obtained for SW Dra and 7.3 solar radii for X Ari. The results support Simon's suggestion that X Ari could be an anomalous Cepheid. |
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