Hunting pre-stellar cores with APEX IRAS16293E (Oph464) S. Spezzano, E. Redaelli, P. Caselli, O. Sipilä, J. Harju, F. Lique, D. Arzoumanian, J. E. Pineda, F. Wyrowski and A. Belloche A&A, 694 (2025) A27 Published online: 30 January 2025 DOI: 10.1051/0004-6361/202452625