Further Evidence of the Planetary Nature of HD 95086 b from Gemini/NICI H-band Data

T. Meshkat; V. Bailey; J. Rameau; M. Bonnefoy; A. Boccaletti; E. E. Mamajek; M. Kenworthy; G. Chauvin; A. -M. Lagrange; K. Y. L. Su; T. Currie

doi:10.1088/2041-8205/775/2/l40

arXiv · 1309.0543

Further Evidence of the Planetary Nature of HD 95086 b from Gemini/NICI H-band Data

T. Meshkat·V. Bailey·J. Rameau·M. Bonnefoy·A. Boccaletti·E. E. Mamajek·M. Kenworthy·G. Chauvin·A. -M. Lagrange·K. Y. L. Su·T. Currie

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Abstract

We present our analysis of the Gemini/NICI H-band data of HD 95086, following the discovery of the planet HD 95086 b in L'. The H-band data reach a contrast of 12.7 mag relative to the host star at 5 sigma levels in the location of HD 95086 b, and no point source is found. Our non-detection and H-L' color limit rules out the possibility that the object is a foreground L/T dwarf and that, if it is bound to HD 95086, it is a genuine planetary mass object. We estimate a new pre-main-sequence isochronal age for HD 95086 of 17+/-4 Myr, which is commensurate with previous mean age estimates for the Lower Cen-Crux subgroup. Adopting an age of 17 Myr, the color limit is inconsistent with the COND model, marginally consistent with the BT-SETTL model, and consistent with the DUSTY model.

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T. Meshkat, V. Bailey, J. Rameau, M. Bonnefoy, A. Boccaletti, E. E. Mamajek, M. Kenworthy, G. Chauvin, A. -M. Lagrange, K. Y. L. Su, T. Currie. 2013-09-02. Further Evidence of the Planetary Nature of HD 95086 b from Gemini/NICI H-band Data. https://doi.org/10.1088/2041-8205%2F775%2F2%2Fl40

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