Based on observations obtained at the IRAM, Spain, at the CFHT, Hawaii, at the VLA, USA, and at the Observatoire de Haute-Provence, France.

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Table 3 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/482/585

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