Fig. 4
From: Astrometrically registered maps of H2O and SiO masers toward VX Sagittarii
Variation of the SiO ring radius with the optical light curve (in press manuscript14). The gray cross indicates the optical light curve from American Association of Variable Star Observers (AAVSO; https://www.aavso.org). Color symbols indicate the SiO maser ring radius according to the different transitions and epochs. Cyan triangle, yellow square, blue circle, and red inverted triangle are in the order of 129.3, 86.2, 43.1, and 42.8 GHz SiO maser lines (Table 1, Supplementary Tables 2 and 4)
