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

October 2013 • 2013ApJ...775L..40M

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

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 5σ 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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• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2013ApJ...775L..40M
• PDF https://iopscience.iop.org/article/10.1088/2041-8205/775/2/L40/pdf
• PREPRINT http://arxiv.org/abs/1309.0543
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• ELECTR https://iopscience.iop.org/article/10.1088/2041-8205/775/2/L40