Gas phase Elemental abundances in Molecular cloudS (GEMS)
- D. Navarro-Almaida
- R. Le Gal
- A. Fuente
- P. Rivière-Marichalar
- V. Wakelam
- S. Cazaux
- P. Caselli
- J. C. Laas
- T. Alonso-Albi
- J. C. Loison
- M. Gerin
- C. Kramer
- E. Roueff
- R. Bachiller
- B. Commerçon
- R. Friesen
- S. García-Burillo
- J. R. Goicoechea
- B. M. Giuliano
- I. Jiménez-Serra
- J. M. Kirk
- V. Lattanzi
- J. Malinen
- N. Marcelino
- R. Martín-Domènech
- G. M. Muñoz Caro
- J. Pineda
- B. Tercero
- S. P. Treviño-Morales
- O. Roncero
- A. Hacar
- M. Tafalla
- D. Ward-Thompson
DOIAbstract
Context. Sulphur is one of the most abundant elements in the Universe. Surprisingly, sulphuretted molecules are not as abundant as expected in the interstellar medium and the identity of the main sulphur reservoir is still an open question. Aims. Our goal is to investigate the H2S chemistry in dark clouds, as this stable molecule is a potential sulphur reservoir. Methods. Using millimeter observations of CS, SO, H2S, and their isotopologues, we determine the physical conditions and H2S abundances along the cores TMC 1-C, TMC 1-CP, and Barnard 1b. The gas-grain model NAUTILU
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