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Fig. 3
NTT/SofI low-resolution near-infrared spectra of the T4.5 dwarf co-moving with HIP 70849 (black line). Overplotted are IRTF/SpeX spectra of SDSS J000013.54+255418.6 (T4.5; Knapp et al. 2004; Jameson et al. 2008; Burgasser et al. 2006) and the average spectrum of a T4 and T5 dwarf.
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