Chemical study of intermediate-mass (IM) Class 0 protostars - CO depletion and N2H+ deuteration
T. Alonso-Albi, A. Fuente, N. Crimier, P. Caselli, C. Ceccarelli, D. Johnstone, P. Planesas, J. R. Rizzo, F. Wyrowski, M. Tafalla, B. Lefloch, S. Maret and C. Dominik
