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

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

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.

Original languageEnglish (US)
Article numberL40
JournalAstrophysical Journal Letters
Volume775
Issue number2
DOIs
StatePublished - Oct 1 2013

Keywords

  • planets and satellites: detection
  • stars: individual (HD 95086)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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