Properties of Anomalous and Type-II Cepheids in the Magellanic Clouds

Martin A. T. Groenewegen and Monika I. Jurkovic

We study the sample of 335 Anomalous Cepheids and Type-II Cepheids detected by the OGLE-III survey in the Small and Large Magellanic Clouds. The spectral energy distributions are constructed and fitted in order to derive effective temperatures and luminosities. We summarise the results we published in two recent papers that include: 1) a comparison of the Hertzsprung-Russell diagram to evolutionary tracks in order to constrain initial masses, 2) the derivation of the bolometric period-luminosity and the period-radius relations, 3) the derivation of masses based on newly derived theoretical period-mass-temperature-luminosity-metallicity relations, and 4) an analysis of the OGLE light curves to identify stars showing period changes and possibly binaries through the light-time effect.

Proceedings of the Polish Astronomical Society, vol. 6, 47-51 (2018)

Download full article as PDF file: