Fig. 5
J,H,Ks, and L-band light curves. The oldest data is from 1975, the latest from June 2013. Statistical uncertainties are represented, although they are often smaller than the symbol. Diamonds: NACO data; squares: from Peeples et al. (2007); circles: from Ott et al. (1999, these points have been brought up by 0.3 mag); triangles: from Blum et al. (1996a) which includes data from Becklin & Neugebauer (1975) and Depoy & Sharp (1991). Dashed curves: sinusoidal models with a period of 2850 d.
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