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Journal articles
HD 181068: A red giant in a triply eclipsing compact hierarchical triple system
A. Derekas
L. L. Kiss
T. Borkovits
D. Huber
H. Lehmann
J. Southworth
T. R. Bedding
D. Balam
M. Hartmann
M. Hrudkova
M. J. Ireland
J. Kovács
Gy. Mező
A. Moór
E. Niemczura
G. E. Sarty
Gy. M. Szabó
R. Szabó
J. H. Telting
A. Tkachenko
K. Uytterhoeven
1
J. M. Benkő
S. T. Bryson
V. Maestro
A. E. Simon
D. Stello
G. Schaefer
2
C. Aerts
T.A. ten Brummelaar
P. de Cat
H. A. Mcalister
C. Maceroni
A. Mérand
M. Still
J. Sturmann
3
L. Sturmann
3
N. Turner
P. G. Tuthill
J. Christensen-Dalsgaard
4
R. L. Gilliland
H. Kjeldsen
E. V. Quintana
P. Tenenbaum
5
J. D. Twicken
1
AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation (AIM - UMR 7158 - UMR E 9005,
ex "Astrophysique Interactions Multi-échelles",
Service d'astrophysique,
CEA/Saclay,
Orme des Merisiers
F-91191 GIF SUR YVETTE CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_7158 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : UMR_E_9005 (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_7158 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
2
Georgia State University (33 Gilmer Street SE Atlanta, GA - United States)
- USG - University System of Georgia (270 Washington Street, S.W., Atlanta, GA 30334 - United States)
3
CHARA - Center for High Angular Resolution Astronomy (P.O. Box 3965, Atlanta, Georgia 30302-3965 (USA) - United States)
- Georgia State University (33 Gilmer Street SE Atlanta, GA - United States)
- USG - University System of Georgia (270 Washington Street, S.W., Atlanta, GA 30334 - United States)
4
SAC - Stellar Astrophysics Centre [Aarhus] (Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark - Denmark)
- Aarhus University [Aarhus] (Nordre Ringgade 1 DK-8000 Aarhus C - Denmark)
5
SLAC - Stanford Linear Accelerator Center (SLAC Stanford University 2575 Sand Hill Rd Menlo Park, CA 94039 - United States)
- Stanford University [Stanford] (450 Serra Mall, Stanford, CA 94305-2004 - United States)
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
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https://hal-cea.archives-ouvertes.fr/cea-00863610
Contributor : Bruno Savelli <>
Submitted on : Thursday, September 19, 2013 - 11:38:08 AM
Last modification on : Saturday, April 11, 2020 - 2:17:34 AM
Contributor : Bruno Savelli <>
Submitted on : Thursday, September 19, 2013 - 11:38:08 AM
Last modification on : Saturday, April 11, 2020 - 2:17:34 AM
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- HAL Id : cea-00863610, version 1
- DOI : 10.1126/science.1201762
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CEA | INSU | UNIV-PARIS7 | CNRS | USPC | IRFU-AIM | DSM-IRFU | CEA-DRF | UP-SCIENCES
Citation
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, 2011, 332 (6026), pp.216-218. ⟨10.1126/science.1201762⟩. ⟨cea-00863610⟩
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