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New ammonia masers towards NGC6334I

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arxiv 0711.1704 v1 pith:OCSOZHZU submitted 2007-11-12 astro-ph

New ammonia masers towards NGC6334I

classification astro-ph
keywords masersammoniatransitionsngc6334iregiontowardsvelocityabove
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report the detection of new ammonia masers in the non-metastable (8,6) and (11,9) transitions towards the massive star forming region NGC6334I. Observations were made with the ATCA interferometer and the emitting region appears unresolved in the 2.7" x 0.8" beam, with deconvolved sizes less than an arcsecond. We estimate peak brightness temperatures of 7.8 x 10^5 and 1.2 x 10^5 K for the (8,6) and (11,9) transitions, respectively. The masers appear coincident both spatially and in velocity with a previously detected ammonia (6,6) maser. We also suggest that emission in the (10,9), (9,9) and (7,6) transitions may also be masers, based on their narrow line widths and overlapping velocity ranges with the above masers, as observed with the single-dish Mopra radiotelescope.

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