RR Lyrae in LMC Globular Clusters: Insights into the Oosterhoff ...
RR Lyrae in LMC Globular Clusters: Insights into the Oosterhoff ...
RR Lyrae in LMC Globular Clusters: Insights into the Oosterhoff ...
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<strong>RR</strong> <strong>Lyrae</strong>Old Stars (> 10 Gyr)Horizontal branch starsthat lie <strong>in</strong> <strong>the</strong> <strong>in</strong>stabilitystripBurn He <strong>in</strong> coreIntr<strong>in</strong>sically variableRadially pulsate Amplitude’s between 0.1and 1 magnitudesPeriods less than a day(Smith 1995)