Physical parameters determination of the RR Lyrae stars RU Psc, SS Psc and TU UMa

Details Physical parameters determination of the RR Lyrae stars RU Psc, SS Psc and TU UMa Physical parameters determination of the RR Lyrae stars RU Psc, SS Psc and TU UMa

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008coast.157..357p&link_type=abstract

Communications in Asteroseismology, Vol.157, p. 357-358

Physics

1

Scientific paper

Empirical determination of the physical characteristics of RR Lyrae stars is important because their accurate modeling requires knowledge of precise metallicity, effective temperature, surface gravity, luminosity and period of pulsation. Some of these parameters can be estimated from Fourier light curve decomposition (Simon & Clement 1993). Furthermore, uvbyβ photoelectric photometry can also be used to estimate some physical parameters from the comparison with synthetic colours (Lester et al. 1986). Stromgren uvbyβ photometry of the RR Lyrae stars RU Piscium (RRc), SS Piscium (RRc) and TU UMa (RRab) has been acquired. We report the values of Teff , MV , [Fe/H] and log g.

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