The complex environment of the bright carbon star TX Piscium as probed by spectro-astrometry J. Hron, S. Uttenthaler, B. Aringer, D. Klotz, T. Lebzelter, C. Paladini and G. Wiedemann A&A, 584 (2015) A27 Published online: 17 November 2015 DOI: 10.1051/0004-6361/201526862