RETRACTED: Direct imaging discovery of a Jovian exoplanet within a triple-star system

Kevin Wagner; Dániel Apai; Markus Kasper; Kaitlin Kratter; Melissa McClure; Massimo Robberto; Jean-Luc Beuzit

doi:10.1126/science.aaf9671

RETRACTED: Direct imaging discovery of a Jovian exoplanet within a triple-star system

Science. 2016 Aug 12;353(6300):673-8. doi: 10.1126/science.aaf9671. Epub 2016 Jul 7.

Authors

Kevin Wagner¹, Dániel Apai², Markus Kasper³, Kaitlin Kratter⁴, Melissa McClure³, Massimo Robberto⁵, Jean-Luc Beuzit⁶

Affiliations

¹ Department of Astronomy and Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA. kwagner@as.arizona.edu.
² Department of Astronomy and Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA. Lunar and Planetary Laboratory, The University of Arizona, 1640 East University Boulevard, Tucson, AZ 85718, USA.
³ European Southern Observatory (ESO), Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany.
⁴ Department of Astronomy and Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA.
⁵ Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.
⁶ Université Grenoble Alpes, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), F-38000 Grenoble, France. CNRS, IPAG, F-38000 Grenoble, France.

PMID: 27386921
DOI: 10.1126/science.aaf9671

Abstract

Direct imaging allows for the detection and characterization of exoplanets via their thermal emission. We report the discovery via imaging of a young Jovian planet in a triple-star system and characterize its atmospheric properties through near-infrared spectroscopy. The semimajor axis of the planet is closer relative to that of its hierarchical triple-star system than for any known exoplanet within a stellar binary or triple, making HD 131399 dynamically unlike any other known system. The location of HD 131399Ab on a wide orbit in a triple system demonstrates that massive planets may be found on long and possibly unstable orbits in multistar systems. HD 131399Ab is one of the lowest mass (4 ± 1 Jupiter masses) and coldest (850 ± 50 kelvin) exoplanets to have been directly imaged.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Retracted Publication