Abstract
view Abstract Citations (73) References (59) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A photometric investigation of RV Tauri and yellow semiregular variables. Dawson, D. W. Abstract Results are presented for DDO and UBV photoelectric photometry of 52 RV Tau and semiregular variables and candidates. CN abundances, effective temperatures, surface gravities, absolute visual magnitudes, and mass estimates are derived in the framework of the spectroscopic groupings proposed by Preston et al. (1963). The photometry suggests a further division of Preston's group A, and a possible physical connection is indicated between this group and the semiregular variables. The spectroscopic groups are shown to be well separated in the DDO color-color diagrams when mean colors are used for individual stars. An upper limit of about 3 solar masses is determined for stars in each group. A correlation between derived iron abundances and published IR excesses obtained from flux measurements at 3.6 and 11.3 microns is found which supports the contention that dust production in circumstellar shells increases with increasing metallicity. Publication: The Astrophysical Journal Supplement Series Pub Date: September 1979 DOI: 10.1086/190610 Bibcode: 1979ApJS...41...97D Keywords: Cepheid Variables; Electrophotometry; Semiregular Variable Stars; Stellar Spectrophotometry; Abundance; Color-Color Diagram; Cyanides; Gravity Waves; Interstellar Extinction; Metallic Stars; Stellar Atmospheres; Stellar Gravitation; Stellar Luminosity; Stellar Mass; Stellar Temperature; Ubv Spectra; Astrophysics; Photometry:RV Tauri Stars; Photometry:Semiregular Variables full text sources ADS | data products SIMBAD (72) GCPD (1)
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