Positions of the MERLIN 1.6-GHz OH maser features, VLA 44 GHz class I methanol maser features from Kurtz et al. (2004), and MERLIN 6.7 GHz class II methanol masers (Pandian et al. 2011). The symbol that refers to each tracer is shown in the upper left corner of the plot. The plot shows close association between the OH masers and some 6.7-GHz Methanol maser features. The absolute positional accuracies of the MERLIN 1.6-GHz and 6.7-GHz masers are 30 mas (see Sect. 2) and 15 mas, respectively, which is smaller than the size of the symbols. The VLA absolute positional accuracies in RA and Dec associated with the 44 GHz methanol masers are shown by the horizontal and vertical bars, respectively. The origin is at RA (J2000) =19h11m38.974s, Dec (J2000) =+ 08°46′31.09′′. The velocities of the maser features are given. For convenience, the fifth feature of the LHC (~ 14′′ offset) and a far north feature of the 44-GHz (~ 7′′ offset) were not included in this figure.
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