Independent confirmation of β Pictoris b imaging with NICI

被引：19

作者：

Boccaletti, A. ^{[1
,2
]}

Lagrange, A. -M. ^{[3
]}

Bonnefoy, M. ^{[4
]}

Galicher, R. ^{[1
,2
]}

Chauvin, G. ^{[3
]}

机构：

[1] Univ Paris 06, CNRS, Observ Paris, LESIA, F-92195 Meudon, France

[2] Univ Paris 07, F-92195 Meudon, France

[3] Univ Grenoble 1, Inst Planetol & Astrophys Grenoble, CNRS, F-38041 Grenoble, France

[4] Max Planck Inst Astron, D-69117 Heidelberg, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 551卷

关键词：

stars: individual: beta Pictoris; stars: early-type; techniques: image processing; techniques: high angular resolution; FINDING CAMPAIGN DISCOVERY; HR; 8799; B; GIANT PLANET; DEBRIS DISK; YOUNG; CONSTRAINTS; 1ST; EXOPLANETS; COMPANION; SYSTEM;

D O I：

10.1051/0004-6361/201321255

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Ever since it was identified with VLT/NaCo as a bona-fide exoplanet with a mass of about 9 times that of Jupiter at an orbital separation of 8-9 AU, beta Pictoris b has been one of the most studied objects nowadays. The link between the planet and the dusty disk is unambiguously confirmed, and this system provides an opportunity to study the disk/planet interactions and to constrain formation and evolutionary models of giant gas planets. Still, beta Pictoris b has never been confirmed with other telescopes so far. Aims. We aimed at an independent confirmation using a different instrument. Methods. We retrieved archive images from Gemini South obtained with the instrument NICI, which is designed for high-contrast imaging. The observations combine coronagraphy and angular differential imaging and were obtained at three epochs in Nov. 2008, Dec. 2009, and Dec. 2010. Results. We report the detection with NICI of the planet beta Pictoris b in Dec. 2010 images at a separation of 404 +/- 10 mas and PA = 212.1 +/- 0.7 degrees. It is the first time this planet has been observed with a different telescope than the VLT.

引用

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