The young intermediate-mass stellar object AFGL 490 – A disk surrounded by a cold envelope K. Schreyer, Th. Henning, F. F. S. van der Tak, A. M. S. Boonman and E. F. van Dishoeck A&A, 394 2 (2002) 561-583 Published online: 15 October 2002 DOI: 10.1051/0004-6361:20021160