Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009astl...35..132l&link_type=abstract
Astronomy Letters, Volume 35, Issue 2, pp.132-135
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of our observations of the H2O maser emission toward the complex source ON2 associated with an active star-forming region. The observations were performed in a wide range of radial velocities, from -75 to 90 km s-1. We have detected an emission with flux densities of 9.2, 4, and 26 Jy at radial velocities of -33.5, -24.4, and -18.8 km s-1, respectively, at which no emission has been observed previously. The detected emission is most likely associated with a hitherto unknown cluster of maser spots located between the northern (N) and southern (S) components of the source ON2 (closer to the northern one). This cluster may be associated with one of the three CO molecular outflows in the ON2 region. We have also detected an emission at -22 and -14.5 km s-1 in N and at 12.6 km s-1 in S, which has extended significantly the velocity ranges of the maser emission in these sources and allowed their models to be improved.
Lekht E. E.
Rudnitskii Georgii M.
Tolmachev A. M.
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