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Article: Exploring the possibility of polycyclic aromatic hydrocarbons and fulleranes as the carrier of the 21 micron emission feature
| Title | Exploring the possibility of polycyclic aromatic hydrocarbons and fulleranes as the carrier of the 21 micron emission feature |
|---|---|
| Authors | |
| Issue Date | 11-Nov-2024 |
| Publisher | Frontiers Media |
| Citation | Frontiers in Astronomy and Space Sciences, 2024, v. 11, p. 1-9 How to Cite? |
| Abstract | The 21 µm emission feature discovered in a small sample of carbon-rich protoplanetary nebulae has remained unidentified for over 30 years. A dozen of different molecular species (both organics and inorganics) have been proposed as the carrier candidates of this important feature, among which polycyclic aromatic hydrocarbons (PAHs) and fulleranes (hydrogenated fullerenes) have yet to be sufficiently examined. In this study, we attempt to fit the 21 µm features in observed spectra of the above-mentioned astronomical sources via theoretically simulated spectra of various PAHs and fulleranes, aiming to investigate whether the two hydrocarbon families can reproduce the 21 µm feature. Based on the fitting outcomes we conclude that fulleranes can provide a more plausible explanation for the origin of 21 µm feature than PAHs. |
| Persistent Identifier | http://hdl.handle.net/10722/357304 |
| ISI Accession Number ID |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Liao, Xuan-Xiang | - |
| dc.contributor.author | Zhang, Yong | - |
| dc.contributor.author | Sadjadi, Seyedabdolreza | - |
| dc.date.accessioned | 2025-06-23T08:54:37Z | - |
| dc.date.available | 2025-06-23T08:54:37Z | - |
| dc.date.issued | 2024-11-11 | - |
| dc.identifier.citation | Frontiers in Astronomy and Space Sciences, 2024, v. 11, p. 1-9 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/357304 | - |
| dc.description.abstract | <p>The 21 µm emission feature discovered in a small sample of carbon-rich protoplanetary nebulae has remained unidentified for over 30 years. A dozen of different molecular species (both organics and inorganics) have been proposed as the carrier candidates of this important feature, among which polycyclic aromatic hydrocarbons (PAHs) and fulleranes (hydrogenated fullerenes) have yet to be sufficiently examined. In this study, we attempt to fit the 21 µm features in observed spectra of the above-mentioned astronomical sources via theoretically simulated spectra of various PAHs and fulleranes, aiming to investigate whether the two hydrocarbon families can reproduce the 21 µm feature. Based on the fitting outcomes we conclude that fulleranes can provide a more plausible explanation for the origin of 21 µm feature than PAHs.</p> | - |
| dc.language | eng | - |
| dc.publisher | Frontiers Media | - |
| dc.relation.ispartof | Frontiers in Astronomy and Space Sciences | - |
| dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
| dc.title | Exploring the possibility of polycyclic aromatic hydrocarbons and fulleranes as the carrier of the 21 micron emission feature | - |
| dc.type | Article | - |
| dc.description.nature | published_or_final_version | - |
| dc.identifier.doi | 10.3389/fspas.2024.1489982 | - |
| dc.identifier.volume | 11 | - |
| dc.identifier.spage | 1 | - |
| dc.identifier.epage | 9 | - |
| dc.identifier.eissn | 2296-987X | - |
| dc.identifier.isi | WOS:001362024500001 | - |
| dc.identifier.issnl | 2296-987X | - |