SCIENCE ENABLE PRODUCTS
IRAM 30m Large Program “Gas-phase elemental abundances in molecular clouds” (GEMS)
GEMS is a large program at the IRAM 30-meter telescope that was granted 458 hours of observing time. The GEMS project aims to determine the gas ionization degree, X(e-), and the elemental depletions (C, O, S, N) as a function of visual extinction in a set of prototypical star forming filaments located in Taurus, Perseus and Orion (TMC1, B213/L1495, B1b, NGC 1333, IC348, L1448, B5, Orion A).