CONFIRMATION OF THE PLANET AROUND HD 95086 BY DIRECT IMAGING

被引：114

作者：

Rameau, J. ^{[1
]}

Chauvin, G. ^{[1
]}

Lagrange, A. -M. ^{[1
]}

Meshkat, T. ^{[2
]}

Boccaletti, A. ^{[3
,4
]}

Quanz, S. P. ^{[5
]}

Currie, T. ^{[6
]}

Mawet, D. ^{[7
]}

Girard, J. H. ^{[7
]}

Bonnefoy, M. ^{[8
]}

Kenworthy, M. ^{[2
]}

机构：

[1] UJF Grenoble 1 CNRS INSU, IPAG UMR 5274, F-38041 Grenoble, France

[2] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

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

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

[5] ETH, Inst Astron, CH-8093 Zurich, Switzerland

[6] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 1A1, Canada

[7] European So Observ, Santiago 19, Chile

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

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2013年 / 779卷 / 02期

关键词：

instrumentation: adaptive optics; planets and satellites: detection; stars: individual (HD 95086); LOW-MASS STARS; GIANT PLANET; BETA-PICTORIS; DEBRIS DISK; EXOPLANETS; ACCRETION; ATMOSPHERES; FOMALHAUT; MODES; NAOS;

D O I：

10.1088/2041-8205/779/2/L26

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

VLT/NaCo angular differential imaging at L' (3.8 mu m) revealed a probable giant planet comoving with the young and early-type HD 95086, also known to harbor an extended debris disk. The discovery was based on the proper motion analysis of two datasets spanning 15 months. However, the second dataset suffered from bad atmospheric conditions, which limited the significance of the re-detection at the 3 sigma level. In this Letter, we report new VLT/NaCo observations of HD 95086 obtained on 2013 June 26 and 27 at L' to recover the planet candidate. We unambiguously re-detect the companion HD 95086 b with multiple independent pipelines at a signal-to-noise ratio greater than or equal to 5. Combined with previously reported measurements, our astrometry decisively shows that the planet is comoving with HD 95086 and inconsistent with a background object. With a revised mass of 5 +/- 2 Jupiter masses, estimated from its L' photometry and "hot-start" models at 17 +/- 4 Myr, HD 95086 b becomes a new benchmark for further physical and orbital characterization of young giant planets.

引用

页数：5

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