HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

HD 181068: A red giant in a triply eclipsing compact hierarchical triple system

Abstract : Hierarchical triple systems comprise a close binary and a more distant component. They are important for testing theories of star formation and of stellar evolution in the presence of nearby companions. We obtained 218 days of Kepler photometry of HD 181068 (magnitude of 7.1), supplemented by ground-based spectroscopy and interferometry, which show it to be a hierarchical triple with two types of mutual eclipses. The primary is a red giant that is in a 45-day orbit with a pair of red dwarfs in a close 0.9-day orbit. The red giant shows evidence for tidally induced oscillations that are driven by the orbital motion of the close pair. HD 181068 is an ideal target for studies of dynamical evolution and testing tidal friction theories in hierarchical triple systems
Document type :
Journal articles
Complete list of metadata

Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Thursday, September 19, 2013 - 11:38:08 AM
Last modification on : Monday, May 9, 2022 - 11:58:07 AM

Links full text



A. Derekas, L. L. Kiss, T. Borkovits, D. Huber, H. Lehmann, et al.. HD 181068: A red giant in a triply eclipsing compact hierarchical triple system. Science, American Association for the Advancement of Science (AAAS), 2011, 332 (6026), pp.216-218. ⟨10.1126/science.1201762⟩. ⟨cea-00863610⟩



Record views