LMC Cepheids in OGLE and MACHO data (Poleski+, 2008)

Details LMC Cepheids in OGLE and MACHO data (Poleski+, 2008) LMC Cepheids in OGLE and MACHO data (Poleski+, 2008)

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ycat.120580313p&link_type=abstract

VizieR On-line Data Catalog: J/AcA/58/313. Originally published in: 2008AcA....58..313P

Other

Magellanic Clouds, Stars: Variable

Scientific paper

Pulsation period of Cepheids should change as stars evolve through the instability strip. Rates of these changes found by other authors based on the decades-long O−C diagrams show rather good agreement with theoretical predictions. We have checked the variability on the scale of a few years on the data recently published by the Optical Gravitational Lensing Experiment (OGLE) for the Large Magellanic Cloud Cepheids and found period changes for 18% of fundamental mode and 41% of first overtone pulsators. It suggest the overtone pulsations are less stable than the fundamental ones. For stars which had the cross-references in the MACHO catalog we have checked if the period change rates derived from the OGLE and the MACHO data are consistent.
(1 data file).

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