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http://hdl.handle.net/20.500.12386/29295
Titolo: | Sulfur Chemistry in L1157-B1 | Autori: | Holdship, Jonathan Jimenez-Serra, Izaskun VITI, SERENA CODELLA, CLAUDIO BENEDETTINI, Milena FONTANI, FRANCESCO Tafalla, Mario Bachiller, Rafael Ceccarelli, Cecilia PODIO, LINDA |
Data pubblicazione: | 2019 | Rivista: | THE ASTROPHYSICAL JOURNAL | Numero: | 878 | Fascicolo: | 1 | Da pagina:: | 64 | Abstract: | The main carrier of sulfur in dense clouds, where it is depleted from the gas phase, remains a mystery. Shock waves in young molecular outflows disrupt the ice mantles and allow us to directly probe the material that is ejected into the gas phase. A comprehensive study of sulfur-bearing species toward L1157-B1, a shocked region along a protostellar outflow, has been carried out as part of the IRAM-30 m large program ASAI. The data set contains over 100 lines of CCS, H<SUB>2</SUB>CS, OCS, SO, SO<SUB>2</SUB>, and isotopologues. The results of these observations are presented, complementing previous studies of sulfur-bearing species in the region. The column densities and fractional abundances of these species are measured and together these species account for 10% of the cosmic sulfur abundance in the region. The gas properties derived from the observations are also presented, demonstrating that sulfur bearing species trace a wide range of different gas conditions in the region. | URI: | http://hdl.handle.net/20.500.12386/29295 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/ab1cb5/pdf | ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/ab1cb5 | Bibcode ADS: | 2019ApJ...878...64H | Fulltext: | open |
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