On the properties of dust and gas in the environs of V838 Monocerotis K. M. Exter, N. L. J. Cox, B. M. Swinyard, M. Matsuura, A. Mayer, E. De Beck and L. Decin A&A, 596 (2016) A96 Published online: 09 December 2016 DOI: 10.1051/0004-6361/201628235