Revista Mexicana de Astronom'ia y Astrof'isica, 99, 1--9 (2002)

We present sensitive VLA observations at 3.6-cm of nine fields containing molecular outflows. We detected candidates for the exciting sources of the molecular outflows in six of the fields: L1448 IRS2, IRAS 05327+3404, L43, IRAS 22142+5206, L1211, and IRAS 23545+6508. We discuss the parameters of these sources, as well as their relation with sources detected at other wavelengths

Revista Mexicana de Astronoma y Astrofsica, 37, 201-211 (2001)

We present sensitive Very Large Array observations at 3.5 cm toward ten regions with Herbig-Haro ows. We detect for the rst time at cm wavelengths the exciting sources of the HH 211 and HH 68 outows. We also present 7-mm observations of the exciting source of HH 211. Our analysis of the cm and mm spectrum indicate that in this source the 3.5-cm emission is dominated by free-free emission from a thermal jet, while the 7-mm emission is dominated by dust emission most probably arising from a disk. This disk is small, with radius smaller than 10 AU, placing it in the category of compact protoplanetary disks. The exciting source of HH 68 coincides with the object HH 68b, as previously suggested by other authors. We also nd that the exciting source of the HH 119 ow in B335, previously reported at centimeter wavelenghts, is time-variable

Revista Mexicana de Astronoma y Astrofsica, 38, 13--21 (2002)

We present sensitive Very Large Array observations at 3.6 cm of nine fields containing molecular outflows. We detected candidates for the exciting sources of the molecular outflows in six of the fields: L1448 IRS2, IRAS 05327+3404, L43, IRAS 22142+5206, L1211, and IRAS 23545+6508. We discuss the parameters of these sources, as well as their relation with sources detected at other wavelengths