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We present the first results from an H 2 O maser survey conducted with the VLBA for determining candidate sources for space VLBI missions. We observed 60 sources in total: four late-type stars, 29 star-forming regions, and 27 H II regions. These are the first interferometric observations of any kind for 50% of the sources. Approximately 30% of the sources we observed exhibit highly compact structure and very strong emission, which make them ideal targets for space VLBI missions.
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Migenes et al. (1999) studied this question.
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