Do EC 14026 stars exist in clusters?
We have began a program to search for pulsating sdB stars in open and globular clusters. Detection of pulsators in clusters would aid the understanding of their evolution, since the masses and metal content of the main-sequence progenitors would be known. Here we describe the beginning of our search during which we plan to observe about 100 sdB stars. A failure to detect any pulsators would suggest differences between sdB stars in clusters and in the field of the Milky Way (e.g., metallicity, binarity) which would need to be taken into account by any pulsation/evolution scenario.
Physics, Astronomy, and Materials Science
Clusters: individual (NGC 6791, NGC 188, NGC 6571, M 13, M 15, NGC 2808), Stars: AGB and post-AGB, variable: general
Reed, M. D., D. Kilkenny, and D. M. Terndrup. "Do EC 14026 stars exist in clusters?." Baltic Astronomy 15 (2006): 65-68.