Fig. 1

Continuum images for all newly observed sources. Contour levels are logarithmically spaced, by a factor 2: −2 and 2, 4, 8, 16, 32, 64, 128 and 256σ. Rms noise (in mJy/beam) and peak S/N are: CI Tau 0.6 and 180, CY Tau 0.5 and 190, GO Tau 0.26 and 180, HV Tau 0.12 and 230, DL Tau 0.23 and 550, IQ Tau 0.23 and 270, DG Tau B 0.7 (dynamic range limited) and 450, DN Tau 0.25 and 360, and IRAS 04302+2247 0.4 and 180.
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