RADIO CONTINUUM AND METHANOL OBSERVATIONS OF DR21(OH)
Por:
Araya E.D., Kurtz S., Hofner P., Linz H.
Publicada:
20 jun 2009
Resumen:
We report high-sensitivity subarcsecond angular resolution observations of the massive star-forming region DR21(OH) at 3.6, 1.3, and 0.7 cm obtained with the Very Large Array. In addition, we conducted observations of CH(3)OH 44 GHz masers. We detected more than 30 new maser components in the DR21(OH) region. Most of the masers appear to trace a sequence of bow shocks in a bipolar outflow. The centimeter continuum observations reveal a cluster of radio sources; the strongest emission is found toward the molecular core MM1. The radio sources in MM1 are located about 5 '' north of the symmetry center of the CH(3)OH outflow, and therefore they are unlikely to be associated with the outflow. Instead, the driving source of the outflow is likely located in the MM2 core. Although based on circumstantial evidence, the radio continuum from MM1 appears to trace free-free emission from shock-ionized gas in a jet. The orientation of the putative jet in MM1 is approximately parallel to the CH(3)OH
Filiaciones:
Araya E.D.:
National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801, United States
Department of Physics and Astronomy, University of New Mexico, MSC07 4220, Albuquerque, NM 87131, United States
Kurtz S.:
Univ Autonoma Mexico, Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico
Hofner P.:
National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801, United States
New Mexico Institute of Mining and Technology, Physics Department, 801 Leroy Place, Socorro, NM 87801, United States
Linz H.:
Max-Planck-Institut für Astronomie, Königstuhl 17, Heidelberg, D-69117, Germany
Bronze
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