“Forbidden” stars in the eROSITA all-sky survey: X-ray emission from very late-type giants J. H. M. M. Schmitt, M. Hünsch, P. C. Schneider, S. Freund, S. Czesla, J. Robrade and A. Schwope A&A, 688 (2024) A9 Published online: 30 July 2024 DOI: 10.1051/0004-6361/202449181