All Figures

Figure 1: Near-infrared color-color magnitude for all our targets in Taurus ( filled triangles) and Ophiuchus ( filled squares). Objects not detected by 2MASS in the J band are indicated with arrows. The companions detected at all three wavelengths in our survey are indicated by diamonds, the larger ones representing those that are likely to be bound to one of our targets. The solid curve indicates the locus of main sequence sources and the dashed line represents the dereddened locus of all T Tauri stars in the Taurus region (Meyer 1996). The dotted lines delineate the reddening band of both loci for  mag and the extinction law from Rieke & Lebofsky (1985).

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In the text

	Figure 2: Greyscale images of the candidate multiple systems detected in Ophiuchus. Each image is about 20 (2800 AU) on a side; North is up and East to the left. The faintest companions are indicated with arrows.
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In the text

Figure 3: Observed flux ratios of our targets (Taurus: triangles; Ophiuchus: squares) and of Class II and III systems in Ophiuchus ( plus signs). The filled and empty symbols for our Ophiuchus targets discrimate between physically bound and projected systems (see Sect. 3.3). The solid line is our median 3 detection limit, and the dashed lines represent the 1 variation about that line (see text for details).

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In the text

	Figure 4: Example of nebulosities surrounding some of our targets; the upper row shows some Taurus sources, the lower Ophiuchus targets. Each image is 25 on the side; North is up and East to the left. The contours are spaced by 0.75 mag/arcsec2 from the peak flux down to approximately the 4-5 limit.
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In the text