Direct imaging of multiple planets orbiting the star HR 8799.
Christian Marois,Christian Marois,Christian Marois,Bruce Macintosh,Travis S. Barman,Barry Zuckerman,Inseok Song,Jennifer Patience,David Lafrenière,René Doyon +9 more
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TLDR
High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units.Abstract:
Direct imaging of exoplanetary systems is a powerful technique that can reveal Jupiter-like planets in wide orbits, can enable detailed characterization of planetary atmospheres, and is a key step toward imaging Earth-like planets. Imaging detections are challenging because of the combined effect of small angular separation and large luminosity contrast between a planet and its host star. High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units. Multi-epoch data show counter clockwise orbital motion for all three imaged planets. The low luminosity of the companions and the estimated age of the system imply planetary masses between 5 and 13 times that of Jupiter. This system resembles a scaled-up version of the outer portion of our solar system.read more
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Proceedings ArticleDOI
Review of high-contrast imaging systems for current and future ground- and space-based telescopes I: coronagraph design methods and optical performance metrics
Garreth Ruane,A. J. Riggs,A. J. Riggs,Johan Mazoyer,Emiel H. Por,Mamadou N'Diaye,Elsa Huby,Pierre Baudoz,R. Galicher,Ewan S. Douglas,Justin Knight,Brunella Carlomagno,Kevin Fogarty,Laurent Pueyo,Neil Zimmerman,Olivier Absil,Mathilde Beaulieu,Eric Cady,Alexis Carlotti,David S. Doelman,Olivier Guyon,Olivier Guyon,Olivier Guyon,Sebastiaan Y. Haffert,Jeffrey Jewell,Jeffrey Jewell,Nemanja Jovanovic,Christoph U. Keller,Matthew A. Kenworthy,Jeff Kuhn,Kelsey Miller,Dan Sirbu,Frans Snik,J. Kent Wallace,J. Kent Wallace,Michael J. Wilby,Marie Ygouf +36 more
TL;DR: The Optimal Optical Coronagraph (OOC) workshop at the Lorentz Center in September 2017 in Leiden, the Netherlands gathered a diverse group of 25 researchers working on exoplanet instrumentation to stimulate the emergence and sharing of new ideas as discussed by the authors.
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Anthony Boccaletti,Jean Schneider,W. A. Traub,Pierre Olivier Lagage,Daphne Stam,Raffaele Gratton,John T. Trauger,Kerri Cahoy,Frans Snik,Pierre Baudoz,Raphael Galicher,Jean Michel Reess,Dimitri Mawet,Jean-Charles Augereau,Jenny Patience,Marc J. Kuchner,Mark C. Wyatt,Eric Pantin,Anne Lise Maire,Christophe Verinaud,Samuel Ronayette,Didier Dubreuil,Michiel Min,Michiel Rodenhuis,Dino Mesa,Russ Belikov,Olivier Guyon,Olivier Guyon,Motohide Tamura,Naoshi Murakami,Ingrid Mary Beerer +30 more
TL;DR: SPICES (Spectro-Polarimetric Imaging and Characterization of Exoplanetary Systems) is a five-year M-class mission proposed to ESA Cosmic Vision as mentioned in this paper, whose purpose is to image and characterize long-period extrasolar planets and circumstellar disks in the visible (450-900 nm) at a spectral resolution of about 40 using both spectroscopy and polarimetry.
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Direct Spectrum of the Benchmark T dwarf HD 19467 B
Justin R. Crepp,Emily L. Rice,Aaron Veicht,Laurent Pueyo,Jonathan Aguilar,Paige Giorla,Ricky Nilsson,Statia H. Cook,Rebecca Oppenheimer,Sasha Hinkley,Douglas Brenner,Gautam Vasisht,Eric Cady,Charles Beichman,Lynne A. Hillenbrand,Thomas Lockhart,Christopher T. Matthews,Lewis C. Roberts,Anand Sivaramakrishnan,Rémi Soummer,Chengxing Zhai +20 more
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The Gemini NICI Planet-Finding Campaign: The Companion Detection Pipeline
Zahed Wahhaj,Michael C. Liu,Beth Biller,Eric L. Nielsen,Laird M. Close,Thomas L. Hayward,Markus Hartung,Mark Chun,Christ Ftaclas,Douglas W. Toomey +9 more
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