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Fig. 2


Radial velocities of TX Psc obtained with the HERMES spectrograph and an Arcturus cross-correlation mask (black squares and left scale), along with AAVSO V magnitudes (open triangles and right scale). The horizontal dashed line is the heliocentric centre-of-mass (CoM) velocity from the CO J = 1−0 radio line (Barnbaum & Hinkle 1995, and references therein).

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