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start [2021/06/23 15:15]
fuente [Frequency and sensitivity coverage] 		start [2021/06/23 15:24] (current)
fuente [Presentation]
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-"Gas phase Elemental abundances in Molecular Clouds" (GEMS) is a IRAM Large Program granted with 458h of observing time in the 30m IRAM telescope. Project observations started on 2017.+"Gas phase Elemental abundances in Molecular Clouds" (GEMS) is a IRAM Large Program granted with 458 h of observing time in the 30 m IRAM telescope. Project observations started in 2017.
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-The goal is to determine the S, C, N, O depletions and X(e-) as a function of visual extinction, in a selected set of prototypical star forming filaments (TMC1, B213/L1495, Barnard 1, NGC 1333, IC348, L1448, B5, Orion A).+The goal is to determine the S, C, N, O depletions and X(e-) as a function of visual extinction, in a selected set of prototypical star forming filaments (TMC 1, B 213/L 1495, Barnard 1, NGC 1333, IC 348, L 1448, B 5, Orion A).
 These parameters are the essential ingredients for chemical models and for cloud collapse simulations because they govern the gas cooling and the coupling of the gas with the magnetic field. Hence, they are of paramount importance for star formation galactic studies. From the chemical point of view, the variation of the elemental abundances in gas phase is a valuable information to determine the evolution of dust grains and the composition of the icy grain mantles across the cloud. These parameters are the essential ingredients for chemical models and for cloud collapse simulations because they govern the gas cooling and the coupling of the gas with the magnetic field. Hence, they are of paramount importance for star formation galactic studies. From the chemical point of view, the variation of the elemental abundances in gas phase is a valuable information to determine the evolution of dust grains and the composition of the icy grain mantles across the cloud.
 As an intermediate product, we will provide a complete set of molecular data in dark clouds. As an intermediate product, we will provide a complete set of molecular data in dark clouds.
-In particular, our dataset will include high-sensitivity spectroscopic observations of CS, SO, H2S, HCS+, SO2, OCS and H2CS.+In particular, our dataset will include high-sensitivity spectroscopic observations of CS, SO, H<sub>2</sub>S, HCS<sup>+</sup>, SO<sub>2</sub>, OCS and H<sub>2</sub>CS.
 Up to our knowledge, it constitutes the best S-bearing molecules dataset in dark clouds so far, and a key stone to progress in our understanding of the sulfur chemistry. Up to our knowledge, it constitutes the best S-bearing molecules dataset in dark clouds so far, and a key stone to progress in our understanding of the sulfur chemistry.
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Last modified: le 2021/06/23 15:15

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