Holdship, J;
Jimenez-Serra, I;
Viti, S;
Codella, C;
Benedettini, M;
Fontani, F;
Tafalla, M;
... Podio, L; + view all
(2019)
Sulfur Chemistry in L1157-B1.
The Astrophysical Journal
, 878
(1)
, Article 64. 10.3847/1538-4357/ab1cb5.
Preview |
Text
Holdship_Sulfur Chemistry in L1157-B1_VoR.pdf - Published Version Download (2MB) | Preview |
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_{2}CS, OCS, SO, SO_{2}, 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.
| Type: | Article |
|---|---|
| Title: | Sulfur Chemistry in L1157-B1 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/1538-4357/ab1cb5 |
| Publisher version: | https://doi.org/10.3847/1538-4357/ab1cb5 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | ISM: molecules, radio lines: ISM, stars: formation, submillimeter: ISM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10074287 |
Archive Staff Only
 |
View Item |
