Fig. 11
Top to bottom: the line profiles of features seen around S Per in 1994 (circles) in the regions labelled A, B, C and D in Fig. 8, and in 1999 (triangles) in the region labelled A in Fig. 8. The diameters of the circles/triangles and of the crosses are proportional to the observed angular FWHM sυ of the maser components and to σs, respectively.
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