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Cucurachi, M.; Barone, F.; Di fiore, L.; Milano, L.; Russo, G.
Confrontation between stellar pulsation and evolution; Proceedings of the Conference (ASP Series, Vol. 11), Bologna, Italy, May 28-31, 19901990
Confrontation between stellar pulsation and evolution; Proceedings of the Conference (ASP Series, Vol. 11), Bologna, Italy, May 28-31, 19901990
AbstractAbstract
[en] 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. 10 refs
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Cacciari, C.; Clementini, G; 616 p; 1990; p. 116-119; Astronomical Society of the Pacific; San Francisco, CA (USA); Confrontation between stellar pulsation and evolution; Bologna (Italy); 28-31 May 1990; CONF-9005249--
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