Water masers associated with low-mass stars - A survey of the Rho Ophiuchi infrared cluster

Statistics – Computation

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Molecular Clouds, Ophiuchi Clouds, Stellar Luminosity, Stellar Mass, Water Masers, Computational Astrophysics, Infrared Astronomy Satellite, Infrared Sources (Astronomy), Spectral Energy Distribution, Stellar Envelopes, Very Long Base Interferometry

Scientific paper

The authors report the detection of H2O masers toward two extremely young pre-main-sequence objects embedded in the nearby Rho Ophiuchi molecular cloud complex. These embedded sources (YLW 16 and IRAS 16293-2422) are among the lowest luminosity objects known to be associated with maser emission (16 and 27 L_sun;). The masers exhibit multiple velocity components which varied substantially in intensity over a period of 9 months and which are spatially unresolved (<70 A.U.). The authors suggest a model whereby the maser activity in both sources arises from the interaction of a strong stellar wind with circumstellar material.

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