On the masses and luminosities of RR Lyrae stars

Details On the masses and luminosities of RR Lyrae stars On the masses and luminosities of RR Lyrae stars

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343l..17s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 343, Aug. 1, 1989, p. L17-L20.

Other

26

Blue Stars, Cepheid Variables, Giant Stars, Interstellar Masers, Stellar Luminosity, Stellar Mass, Stellar Oscillations, Helium, Linear Polarization, Lyra Constellation, Mass To Light Ratios, Stellar Evolution

Scientific paper

Some results are given from the comparison with observations of a large number of hydrodynamic pulsation models. It is found that linear pulsation calculations are adequate for the determination of the masses of RRd stars, that the Fourier phase parameter phi31 measures the luminosity-to-mass ratio L/M exp 1.81 for RRc stars, that most of the Omega Cen RRc stars seem to be evolved, as has previously been suggested, that the masses of the Omega Cen RRc stars agree with the masses of RRd stars in other clusters; and a mass-helium abundance relation may exist among the RRc stars in Omega Cen.

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