Abstract
view Abstract Citations (65) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Metal-Poor Stars. II. Initial Horizontal-Branch Models Rood, Robert T. Abstract Grids of initial horizontal-branch models obtained with Cox-Stewart opacities are presented for six compositions. These models are less luminous than those obtained wfth earlier approximations to the opacity, so the result is that the predicted RR Lyrae luminosities are not inconsistent with those estimated observationally for field RR Lyrae stars. Estimates of cluster ages made by using these models will be 3-6 billion years larger than earlier estimates. Publication: The Astrophysical Journal Pub Date: July 1970 DOI: 10.1086/150520 Bibcode: 1970ApJ...161..145R full text sources ADS | Related Materials (4) Part 1: 1970ApJ...159..605I Part 3: 1970ApJ...161..587I Part 4: 1972ApJ...177..681R Part 5: 1973ApJ...184..815R
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