Variable accretion as a mechanism for brightness variations in T Tauri S

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Table 1:

Summary of the VLT/VISIR observations.
Target	Observing epoch	Airmass	$T_{\rm int}$	$F_{\nu}$ (12.8 ${\mu }$ m)
	(Universal time)		[s]	N/S [Jy]
T Tau	2008 Feb. 04 02:09	1.73	143.5	7.8/12.1
HD 41047	2008 Feb. 04 02:42	1.04	54.3	5.60
T Tau	2008 Feb. 08 00:40	1.45	137.8	8.5/16.7
HD 75691	2008 Feb. 08 01:17	1.33	52.0	9.72

Notes. All images were taken through the [NeII] filter. The last column lists the source brightness at 12.8 ${\mu }$ m. For the T Tau observations, fluxes for the north and south components are individually given. The adopted fluxes of the calibrators HD 41047 and HD 75691 are taken from Cohen et al. (1999). The absolute flux calibration is good to $\approx$ 10%.

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