Infrared images of the transiting disk in the ε Aurigae system

Brian Kloppenborg (), Robert Stencel (), John D. Monnier, Gail Schaefer, Ming Zhao, Fabien Baron, Hal McAlister, Theo ten Brummelaar, Xiao Che, Chris Farrington, Ettore Pedretti, P. J. Sallave-Goldfinger, Judit Sturmann, Laszlo Sturmann, Nathalie Thureau, Nils Turner and Sean M. Carroll
Additional contact information
Brian Kloppenborg: University of Denver, 2112 East Wesley Avenue, Denver, Colorado 80208, USA
Robert Stencel: University of Denver, 2112 East Wesley Avenue, Denver, Colorado 80208, USA
John D. Monnier: University of Michigan, 500 Church Street, Ann Arbor, Michigan 48109-1090, USA
Gail Schaefer: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Ming Zhao: Jet Propulsion Laboratory, 4800 Oak Grove Drive, M.S. 169-327, Pasadena, California 91101, USA
Fabien Baron: University of Michigan, 500 Church Street, Ann Arbor, Michigan 48109-1090, USA
Hal McAlister: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Theo ten Brummelaar: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Xiao Che: University of Michigan, 500 Church Street, Ann Arbor, Michigan 48109-1090, USA
Chris Farrington: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Ettore Pedretti: School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
P. J. Sallave-Goldfinger: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Judit Sturmann: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Laszlo Sturmann: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Nathalie Thureau: School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
Nils Turner: Center for High Angular Resolution Astronomy, Georgia State University, PO Box 3969, Atlanta, Georgia 30302-3969, USA
Sean M. Carroll: California Institute of Technology, 1200 East California Avenue, Pasadena, California 91125, USA

Nature, 2010, vol. 464, issue 7290, 870-872

Abstract: A distant eclipse glimpsed Every 27.1 years the bright binary star ε Aurigae dims as it undergoes an eclipse lasting about 18 months. Until now the body that transits the disk of the ε Aur system has been undetectable and the subject of much speculation. The preferred explanation is that the invisible companion is a tilted disk of opaque material surrounding a hidden star. Recent work implies that the system consists of a visible F-star, paired with a single B5V star enshrouded by a disk at a temperature of about 500K. Now interferometric observations made with the six-telescope CHARA Array in November and December 2009 have produced images of the eclipsing body in the infrared, revealing it to be an opaque disk, its elliptical shape suggesting that it is tilting as predicted.

Date: 2010
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DOI: 10.1038/nature08968

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