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

Derekas, A; Kiss, L L; Borkovits, T; Huber, D; Lehmann, H; Southworth, J; Bedding, Timothy Russell; Balam, D; Hartmann, M; Hrudkova, M; Ireland, Michael


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...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Science
DOI: 10.1126/science.1201762


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