Abstract
view Abstract Citations (44) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ages of globular clusters from their luminosity functions Paczynski, B. Abstract The luminosity function near the turnoff point depends on the age and composition of stars in a cluster. It has a number of advantages over the H-R diagram for comparing stellar models with observations. The luminosity function is not affected by the uncertainties in mixing length parameter and complicated low-temperature opacities. It should be possible to obtain bolometric luminosities from multicolor observations without any reference to model atmospheres. A number of theoretical luminosity functions are presented to illustrate their dependence on age and chemical composition. It is proposed that not only H-R diagrams but also luminosity functions should be used to estimate ages of globular clusters and their uncertainty. Publication: The Astrophysical Journal Pub Date: September 1984 DOI: 10.1086/162449 Bibcode: 1984ApJ...284..670P Keywords: Functions (Mathematics); Globular Clusters; Stellar Evolution; Stellar Luminosity; Chemical Composition; Hertzsprung-Russell Diagram; Astrophysics full text sources ADS |
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