New ammonia masers towards NGC6334I
A. J. Walsh, S. N. Longmore, S. Thorwirth, J. S. Urquhart, C. R., Purcell

TL;DR
This paper reports the discovery of new ammonia masers in specific transitions within the star-forming region NGC6334I, providing detailed observational data and suggesting additional potential maser emissions.
Contribution
It presents the first detection of ammonia masers in the (8,6) and (11,9) transitions towards NGC6334I, with high-resolution interferometric observations and analysis.
Findings
Detected ammonia masers in (8,6) and (11,9) transitions.
Estimated peak brightness temperatures of 7.8 x 10^5 K and 1.2 x 10^5 K.
Possible additional masers in (10,9), (9,9), and (7,6) transitions.
Abstract
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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