Spectral Classification of SIMP J2154-1055
Comparison of the low-resolution, NIR spectrum of SIMP J2154-1055 (black line) with various field and low-gravity templates (colored lines). All spectra are normalized per-band, following the method of Cruz et al. (in prep., see link to poster below).
It can be seen that the best match is the low-gravity L4γ template. The actual spectral classification is L4β (hence with an intermediate gravity), but we do not currently have access to a template for such a spectral type.
If you use this figure, please cite all the references in the "Links" section below. After september 2014, also verify if the full ApJL reference is available on ADS for the arxiv paper. See also if Cruz et al. (in prep., 2014+) is available, which is a better reference than the fishare poster.