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| Submillimeter observations of molecular gas interacting with the supernova remnant W28 | |
Mazumdar, Parichay1; Tram, Le Ngoc1; Wyrowski, Friedrich1; Menten, Karl M.1; Tang, Xindi1,2,3
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| 2022-12-21 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
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| ISSN | 0004-6361 |
| Volume | 668Pages:A180 |
| Contribution Rank | 2 |
| Abstract | Context. Supernovae (SNe) inject large amounts of energy and chemically enriched materials into their surrounding interstellar medium and, in some instances, into molecular clouds (MCs). The interaction of a supernova remnant (SNR) with a MC plays a crucial role in the evolution of the cloud's physical and chemical properties. Despite their importance, only a handful of studies have been made addressing the molecular richness in molecular clouds impacted by SNRs. (Sub)millimter wavelength observations of MCs affected by SNRs can be used to build a census of their molecular richness, which in turn can motivate various chemical and physical models aimed at explaining the chemical evolution of the clouds. Aims. We carried out multi-molecule and multi-transition observations toward the molecular region F abutting the SNR W28, containing 1720 MHz OH masers, well-established tracers of SNR-MC interactions. We used the detected lines to constrain the physical conditions of this region. Methods. We used the APEX Telescope to observe molecular lines in the frequency range 213-374 GHz. We used non-local thermodynamic equilibrium (non-LTE) RADEX modeling to interpret the observational data. Results. We detected emission from multiple molecular species in the region, namely CH3OH, H2CO, SO, SiO, CN, CCH, NO, CS, HCO+, HCN, HNC, N2H+, CO, and from the isotopologues of some of them. We report the first detection of thermally excited (non-maser) CH3OH emission toward a SNR. Employing non-LTE RADEX modeling of multiple H2CO and CH3 OH lines, we constrained the kinetic temperature and spatial density in the molecular gas. The gas kinetic temperatures range from 60 to 100 K while the spatial density of the gas ranges from 9 x 10(5) to 5 x 10(6) cm(-3). We obtained an ortho-para ratio similar to 2 for H2CO, which indicates that formaldehyde is most likely formed on dust grain surfaces and not in the gas phase. Conclusions. Our results show that molecules as complex as H2CO and CH3OH can be detected in SNR-MC interactions. This could motivate chemical modeling to explore their formation pathways. |
| Keyword | ISM: supernova remnants submillimeter: ISM molecular data |
| DOI | 10.1051/0004-6361/202037564 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS Keyword | STAR-FORMING REGIONS ; GAMMA-RAY EMISSION ; PHYSICAL CONDITIONS ; CO OBSERVATIONS ; OH MASERS ; MAGNETOHYDRODYNAMIC SHOCKS ; INTERSTELLAR CLOUDS ; FORMALDEHYDE ORTHO ; PARA RATIO ; H-I |
| Funding Project | Deutsche Forschungsgemeinschaft (DFG) ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Natural Science Foundation of China[11903070] ; National Natural Science Foundation of China[11433008] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000901811800003 |
| Publisher | EDP SCIENCES S A |
| Funding Organization | Deutsche Forschungsgemeinschaft (DFG) ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Natural Science Foundation of China |
| EI Accession Number | 20230113337175 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5039 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Mazumdar, Parichay |
| Affiliation | 1.Max Planck Inst Radioastron, Auf dem Hugel 69, D-53121 Bonn, Germany 2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China |
| Recommended Citation GB/T 7714 | Mazumdar, Parichay,Tram, Le Ngoc,Wyrowski, Friedrich,et al. Submillimeter observations of molecular gas interacting with the supernova remnant W28[J]. ASTRONOMY & ASTROPHYSICS,2022,668:A180. |
| APA | Mazumdar, Parichay,Tram, Le Ngoc,Wyrowski, Friedrich,Menten, Karl M.,&Tang, Xindi.(2022).Submillimeter observations of molecular gas interacting with the supernova remnant W28.ASTRONOMY & ASTROPHYSICS,668,A180. |
| MLA | Mazumdar, Parichay,et al."Submillimeter observations of molecular gas interacting with the supernova remnant W28".ASTRONOMY & ASTROPHYSICS 668(2022):A180. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Mazumdar-2022-Submil（2604KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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