Other
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002rmxac..13..108t&link_type=abstract
Emission Lines from Jet Flows, Isla Mujeres, Q.R., México, November 13-17, 2000 (Eds. W. J. Henney, W. Steffen, A. C. Raga, and
Other
9
Ism: Jets And Outflows, Masers, Stars:Formation
Scientific paper
Interferometric maser observations of several molecular species (e.g., H[2]O, OH, CH[3]OH) provide a very powerful tool to study with high-angular resolution the molecular gas close to protostars. In this way, groups of maser spots have been found to be associated with radio-continuum jet sources in young stellar objects. In some cases, masers seem to be distributed in a band perpendicular to the central radio-continuum jet as might be expected for accretion disks. In other cases, the masers seem to be distributed along the jet source, consistent with being part of the outflow. Recently, a new way to study these star-forming regions through Very Long Baseline Interferometry (VLBI) measurements of the proper motions of the associated masers has emerged. These observations provide angular resolutions up to a few tenths of a milliarcsecond (a few tenths of an astronomical unit at a distance of 500 pc). Here we review some of these studies.
Anglada Guillem
Gomez Jose F.
Patel Nimesh A.
Torrelles Jose Maria
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