The luminosity scale of RR Lyrae stars with the Baade-Wesselink method. II - The absolute magnitudes of 13 field RR Lyrae stars

Abstract

view Abstract Citations (146) References (95) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Luminosity Scale of RR Lyrae Stars with the Baade-Wesselink Method. II. The Absolute Magnitudes of 13 Field RR Lyrae Stars Liu, Tianxing ; Janes, Kenneth A. Abstract The surface brightness version of the Baade-Wesselink method has been applied to 13 field RR Lyrae stars to derive their absolute magnitudes from the photometry and radial velocities presented in a previous paper. Using static model atmospheres to provide metallicity- and gravity-dependent color-temperature transformations, it is found that the RR Lyrae temperature scale can be relatively well defined using the infrared color index V-K except for a small phase interval where strong atmospheric acceleration and shock waves are present, while the temperatures determined from bluer color indices are systematically overestimated. The results show a clear correlation between the luminosities of the RR Lyraes and their metallicities. Publication: The Astrophysical Journal Pub Date: May 1990 DOI: 10.1086/168688 Bibcode: 1990ApJ...354..273L Keywords: Blue Stars; Giant Stars; Stellar Luminosity; Stellar Magnitude; Variable Stars; Brightness Distribution; Computational Astrophysics; Interstellar Extinction; Metallicity; Stellar Spectrophotometry; Stellar Temperature; Astrophysics; STARS: LUMINOSITIES; STARS: PULSATION; STARS: RR LYRAE full text sources ADS | data products SIMBAD (13) Related Materials (2) Part 1: 1989ApJS...69..593L Part 3: 1990ApJ...360..561L