Abstract
view Abstract Citations (31) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Envelope Opacities and the Cepheid Loops at 5 ????_{sun} Robertson, J. W. Abstract Theoretical evolutionary tracks for the stage of core helium burning have previously been unable to explain the detailed distribution in the H-R diagram of the red giants in NGC 1866, a cluster in the Large Magellanic Cloud. Models calculated with improved envelope opacities develop extremely deep convective at the tip of the red-giant branch. The convective envelope modifies the hydrogen distribution in the region near the hydrogen-burning shell, which leads to core-helium-burning evolution in better agreement with the observations. Publication: The Astrophysical Journal Pub Date: May 1972 DOI: 10.1086/151449 Bibcode: 1972ApJ...173..631R full text sources ADS |
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