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VLBI Astrometry of the Semiregular Variable RX Bootis

Tafoya, Daniel; Kurayama, Tomoharu; Honma, Mareki +10 more

We present distance measurements of the semiregular variable RX Bootis (RX Boo) with its annual parallax. Using the unique dual-beam system of the VLBI Exploration of Radio Astrometry (VERA) telescope, we conducted astrometric observations of a water maser spot accompanying RX Boo, referred to the quasar J1419+2706 separated by 1.°69 from RX Boo. …