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Confirmation of the Planet around HD 95086 by Direct Imaging

Rameau, J. and Chauvin, G. and Lagrange, A.-M. and Meshkat, T. and Boccaletti, A. and Quanz, S. P. and Currie, T. and Mawet, D. and Girard, J. H. and Bonnefoy, M. and Kenworthy, M. (2013) Confirmation of the Planet around HD 95086 by Direct Imaging. Astrophysical Journal Letters, 779 (2). Art. No. L26. ISSN 2041-8205. doi:10.1088/2041-8205/779/2/L26.

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VLT/NaCo angular differential imaging at L' (3.8 μm) 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 3σ 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.

Item Type:Article
Related URLs:
URLURL TypeDescription paper
Rameau, J.0000-0003-0029-0258
Meshkat, T.0000-0001-6126-2467
Boccaletti, A.0000-0001-9353-2724
Quanz, S. P.0000-0003-3829-7412
Currie, T.0000-0002-7405-3119
Mawet, D.0000-0002-8895-4735
Girard, J. H.0000-0001-8627-0404
Bonnefoy, M.0000-0001-5579-5339
Kenworthy, M.0000-0002-7064-8270
Additional Information:© 2013. The American Astronomical Society. Received 2013 October 2; accepted 2013 October 24; published 2013 December 6. We are grateful to Vanessa Bailey, Kate Su, and Amy Bonsor for fruitful discussions. We thank the Director General of ESO for discretionary time that allowed to confirm the planet. J.R., G.C., and A.M.L. acknowledge financial support from the French National Research Agency (ANR) through project grant ANR10-BLANC0504-01. Facility: VLT:Yepun (NaCo)
Funding AgencyGrant Number
Agence Nationale pour la Recherche (ANR)ANR10-BLANC0504-01
Subject Keywords:instrumentation: adaptive optics; planets and satellites: detection; stars: individual (HD 95086)
Issue or Number:2
Record Number:CaltechAUTHORS:20150526-162428581
Persistent URL:
Official Citation:Confirmation of the Planet around HD 95086 by Direct Imaging J. Rameau et al. 2013 ApJ 779 L26
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57832
Deposited On:29 May 2015 02:47
Last Modified:10 Nov 2021 21:55

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