Spectral indices for WISE J0720, defined by McLean et al. (2003) and measured on our low-resolution FIRE spectrum.
|Index||Value||Sp. type||Index||Value||Sp. type|
|H2OA||0.66 ± 0.01||L1 ± 1.5||H2OD||1.02 ± 0.01||M9 ± 1|
|H2OB||0.77 ± 0.01||L2 ± 1||J−FeH||0.90 ± 0.01||M8 ± 2|
|H2OC||0.68 ± 0.01||L2 ± 2||z−FeH||0.76 ± 0.04||M7 ± 2|
Notes. The derived spectral types from the spectral sequences in McLean et al. (2003) are listed. The methane indices were omitted, because they cannot constrain the spectral type of M- or L-type objects, and the CO index was omitted because it is in an unreliable part of the spectrum.
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