SIMP J2154–1055: A New Low-gravity L4β Brown Dwarf Candidate Member of the Argus Association

@article{Gagne2014SIMPJA,
  title={SIMP J2154–1055: A New Low-gravity L4β Brown Dwarf Candidate Member of the Argus Association},
  author={J. Gagn'e and D. Lafren{\`i}ere and R. Doyon and 'Etienne Artigau and L. Malo and J. Robert and D. Nadeau},
  journal={The Astrophysical Journal},
  year={2014},
  volume={792}
}
  • J. Gagn'e, D. Lafrenìere, +4 authors D. Nadeau
  • Published 2014
  • Physics
  • The Astrophysical Journal
  • We present SIMP J21543454–1055308, a new L4β brown dwarf identified in the SIMP survey that displays signs of low gravity in its near-infrared spectrum. Using BANYAN II, we show that it is a candidate member of the Argus association, albeit with a 21% probability that it is a contaminant from the field. Measurements of radial velocity and parallax will be needed to verify its membership. If it is a member of Argus (age 30-50 Myr), then this object would have a planetary mass of 10 ± 0.5 M Jup. 
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