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Bono G, Castellani V, Marconi M. The RR Lyrae Star U Comae as a Test for Nonlinear Pulsation Models. Astrophys J. 2000;532(2):L129-L132doi: 10.1086/312582.
Bono, G., Castellani, V., & Marconi, M. (2000). The RR Lyrae Star U Comae as a Test for Nonlinear Pulsation Models. The Astrophysical journal, 532(2), L129-L132. https://doi.org/10.1086/312582
Bono, et al. "The RR Lyrae Star U Comae as a Test for Nonlinear Pulsation Models." The Astrophysical journal vol. 532,2 (2000): L129-L132. doi: https://doi.org/10.1086/312582
Bono G, Castellani V, Marconi M. The RR Lyrae Star U Comae as a Test for Nonlinear Pulsation Models. Astrophys J. 2000 Apr 01;532(2):L129-L132. doi: 10.1086/312582. PMID: 10715241.
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Astrophys J. 2000 Apr 01;532(2):L129-L132. doi: 10.1086/312582.

The RR Lyrae Star U Comae as a Test for Nonlinear Pulsation Models.

The Astrophysical journal

Bono, Castellani, Marconi

PMID: 10715241 DOI: 10.1086/312582

Abstract

We use high-precision multiband photometric data of the first-overtone RR Lyrae star U Comae to investigate the predictive capability of full-amplitude, nonlinear, convective hydrodynamical models. The main outcome of this investigation is that theoretical predictions properly account for the luminosity variations along a full pulsation cycle. Moreover, we find that this approach, because of the strong dependence of this observable and of the pulsation period on stellar parameters, supplies tight constraints on stellar mass, effective temperature, and distance modulus. Pulsational estimates of these parameters appear in good agreement with empirical ones. Finally, a well-defined bump just before the luminosity maximum gave the unique opportunity to calibrate the turbulent convection model adopted for handling the coupling between pulsation and convection.

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