VLBI Astrometry of AGB Variables with VERA — A Semiregular Variable S Crateris—
VLBI Astrometry of AGB Variables with VERA — A Semiregular Variable S Crateris—
Abstract We present a distance measurement for the semiregular variable S Crateris (S Crt) based on its annual parallax. With the unique dual beam system of the VLBI Exploration for Radio Astrometry (VERA) telescopes, we measured the absolute proper motion of a water maser spot associated with S Crt, referred …