Fig. 1
DG Tau (at 0, 0) as seen by the Sloan Digital Sky Survey (SDSS, York et al. 2000) in optical wavelengths. The red dot in the center is 1′′ wide, which is the effective field of view of the VLTI/MIDI. An accompanying object, DG Tau B is located at the lower right corner, marked by a cross. This image is a false-color composite created by us using u, g, r, i, z images.
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