Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/31229
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Burns, R. A. | en_US |
dc.contributor.author | Sugiyama, K. | en_US |
dc.contributor.author | Hirota, T. | en_US |
dc.contributor.author | Kim, Kee-Tae | en_US |
dc.contributor.author | Sobolev, A. M. | en_US |
dc.contributor.author | Stecklum, B. | en_US |
dc.contributor.author | MacLeod, G. C. | en_US |
dc.contributor.author | Yonekura, Y. | en_US |
dc.contributor.author | Olech, M. | en_US |
dc.contributor.author | Orosz, G. | en_US |
dc.contributor.author | Ellingsen, S. P. | en_US |
dc.contributor.author | Hyland, L. | en_US |
dc.contributor.author | Caratti o Garatti, A. | en_US |
dc.contributor.author | Brogan, C. | en_US |
dc.contributor.author | Hunter, T. R. | en_US |
dc.contributor.author | Phillips, C. | en_US |
dc.contributor.author | van den Heever, S. P. | en_US |
dc.contributor.author | Eislöffel, J. | en_US |
dc.contributor.author | Linz, H. | en_US |
dc.contributor.author | Surcis, Gabriele | en_US |
dc.contributor.author | Chibueze, J. O. | en_US |
dc.contributor.author | Baan, W. | en_US |
dc.contributor.author | Kramer, B. | en_US |
dc.date.accessioned | 2021-12-10T15:14:31Z | - |
dc.date.available | 2021-12-10T15:14:31Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 2397-3366 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31229 | - |
dc.description.abstract | High-mass stars are thought to accumulate much of their mass via short, infrequent bursts of disk-aided accretion<SUP>1,2</SUP>. Such accretion events are rare and difficult to observe directly but are known to drive enhanced maser emission<SUP>3-6</SUP>. In this Letter we report high-resolution, multi-epoch methanol maser observations toward G358.93-0.03, which reveal an interesting phenomenon: the subluminal propagation of a thermal radiation `heatwave' emanating from an accreting high-mass protostar. The extreme transformation of the maser emission implies a sudden intensification of thermal infrared radiation from within the inner (40-mas, 270-au) region. Subsequently, methanol masers trace the radial passage of thermal radiation through the environment at ≥4% of the speed of light. Such a high translocation rate contrasts with the ≤10 km s<SUP>-1</SUP> physical gas motions of methanol masers typically observed using very-long-baseline interferometry (VLBI). The observed scenario can readily be attributed to an accretion event in the high-mass protostar G358.93-0.03-MM1. While being the third case in its class, G358.93-0.03-MM1 exhibits unique attributes hinting at a possible `zoo' of accretion burst types. These results promote the advantages of maser observations in understanding high-mass-star formation, both through single-dish maser monitoring campaigns and via their international cooperation as VLBI arrays. | en_US |
dc.language.iso | eng | en_US |
dc.title | A heatwave of accretion energy traced by masers in the G358-MM1 high-mass protostar | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41550-019-0989-3 | en_US |
dc.identifier.url | https://www.nature.com/articles/s41550-019-0989-3 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 4 | en_US |
dc.relation.firstpage | 506 | en_US |
dc.relation.lastpage | 510 | en_US |
dc.relation.numberofpages | 5 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 23 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | AUS | en_US |
dc.contributor.country | CAN | en_US |
dc.contributor.country | KOR | en_US |
dc.contributor.country | JPN | en_US |
dc.contributor.country | IRL | en_US |
dc.contributor.country | NGA | en_US |
dc.contributor.country | NLD | en_US |
dc.contributor.country | POL | en_US |
dc.contributor.country | CHN | en_US |
dc.contributor.country | ZAF | en_US |
dc.contributor.country | RUS | en_US |
dc.contributor.country | THA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | NATURE ASTRONOMY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020NatAs...4..506B | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 2397-3366 | - |
crisitem.journal.ance | E240167 | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0003-2775-442X | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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File | Descrizione | Dimensioni | Formato | |
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NatureAst_R1_tex.pdf | preprint | 936.19 kB | Adobe PDF | Visualizza/apri |
s41550-019-0989-3.pdf | [Administrators only] | 1.41 MB | Adobe PDF |
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