RR Lyrae variables in Omega Centauri: a theoretical route

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dc.creatorCastellani, V.
dc.creatorDegl'Innocenti, S.
dc.creatorMarconi, M.
dc.date2001-12-06
dc.date.accessioned2026-07-07T02:01:42Z
dc.date.available2026-07-07T02:01:42Z
dc.descriptionWe present a theoretical approach to infer information about RR Lyrae variables from the morphology of their light curves. The method, already successfully applied to the field first overtone variable U Comae, is now tested on a RR$_{\mathrm ab}$ variable in the globular cluster $ω$ Cen. We show that, with this method, it could be possible to give an estimate of the distance modulus of the cluster with an uncertainty not larger than $\pm$0.1 mag. The predicted variable luminosity and mass are well within the range of theoretical evolutionary expectations giving the ``feeling'' of a full compatibility between pulsational and evolutionary theory. However, before completely relying on the method, further tests are needed; the goal is that a well tested and well calibrated pulsational theory could provide reliable distance moduli from just one (or few) RR Lyrae stars.
dc.description11 pages with 9 eps figs, newpasp.sty, to be published in the "Omega Centauri: a Unique Window into Astrophysics" (Cambridge, Aug. 2001), ASP Conf. Ser. edited by F. van Leeuwen, G. Piotto,and J. Hughes
dc.identifierhttps://arxiv.org/abs/astro-ph/0112130
dc.identifierhttp://arxiv.org/abs/astro-ph/0112130
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3849
dc.subjectAstrophysics
dc.titleRR Lyrae variables in Omega Centauri: a theoretical route
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