Fig. 7.
Observed H + K spectrum of HD 142527 B (blue dotted curve) compared to a sequence of young early-M stars built using the speX Prism library (Burgasser 2014). The best fit to the spectrum of HD 142527 B is obtained with the M2.5 template. Sources are all extracted from young open cluster IC 348 (Luhman et al. 2016): 2MASS J03435953+3215551 (M1), 2MASS J03440216+3219399 (M1.5), 2MASS J03453230+3203150 (M2), 2MASS J03443481+3156552 (M2.5), 2MASS J03430679+3148204 (M3), 2MASS J03435856+ 3217275 (M3.5), 2MASS J03452021+3217223 (M4) and 2MASS J03450206+3159341 (M4.5).
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