We present preliminary results of a 3.6 cm VLA survey of 46 optical counterparts to ROSAT All-Sky survey X-ray sources south of the Taurus-Auriga star formation region, classified as genuine or possible pre-main sequence stars on the basis of intermediate resolution spectroscopy. Merging our sample with other radio observations of sources in Taurus

The IRIS network is now fourteen years old, and has continuously been taking data since 1989. The data analysis, which produced some noticeable scientifical results, like the measurement of the ell = 1 rotationnal splitting or the measurement of the solar acoustic cut-off frequency, was mainly performed with the summer campaigns data of 1989 to

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GOLF data continuously obtained over the last two years, provides a unique and ideal set for studying the low frequency (ν