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- W2132490056 abstract "view Abstract Citations (16) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ca II H and K reversals in carbon stars. Richer, H. B. Abstract Nine heavily exposed, high-dispersion blue spectrograms of seven different hot carbon stars were obtained. All spectra show a reversal in the Ca ii H and K lines. The widths of the reversals were measured and, after establishing a calibration, the absolute visual magnitudes of the seven stars were derived. Four of the stars, all ordinary R stars, have absolute magnitudes and colors which place them close to the normal giant branch in the spectral range 08 to K2. The remaining three stars are all hydrogen-deficient carbon stars. All these stars are supergiants, lying along the Ib supergiant branch in a color-magnitude diagram. Subject headings: Ca ii emission - carbon stars - hydrogen-deficient stars - luminosities Publication: The Astrophysical Journal Pub Date: May 1975 DOI: 10.1086/153550 Bibcode: 1975ApJ...197..611R full text sources ADS | data products SIMBAD (9) GCPD (1)" @default.
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- W2132490056 date "1975-05-01" @default.
- W2132490056 modified "2023-09-26" @default.
- W2132490056 title "CaII H and K reversals in carbon stars." @default.
- W2132490056 doi "https://doi.org/10.1086/153550" @default.
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