Japanese VLBI Network Observations of SiO Masers in the M-Type Giant IRC-10414

We present two-epoch maps of SiO masers ($v=$ 1 and $v=$ 2, $J=$ 1-0) associated with the M-type star IRC-10414, which were obtained with the Japanese VLBI Network (JVN). The spatial and Doppler velocity distributions, and the intensity ratio of the $v=$ 1 to $v=$ 2 ($J=$ 1-0) lines have significantly changed for eight years since our previous Very Long Baseline Array (VLBA) observation. The maser...