Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28927
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Urquhart, J. S. | en_US |
dc.contributor.author | Figura, C. | en_US |
dc.contributor.author | Wyrowski, F. | en_US |
dc.contributor.author | GIANNETTI, ANDREA | en_US |
dc.contributor.author | Kim, W. -J. | en_US |
dc.contributor.author | Wienen, M. | en_US |
dc.contributor.author | Leurini, Silvia | en_US |
dc.contributor.author | Pillai, T. | en_US |
dc.contributor.author | Csengeri, T. | en_US |
dc.contributor.author | Gibson, S. J. | en_US |
dc.contributor.author | Menten, K. M. | en_US |
dc.contributor.author | Moore, T. J. T. | en_US |
dc.contributor.author | Thompson, M. A. | en_US |
dc.date.accessioned | 2020-12-17T12:18:00Z | - |
dc.date.available | 2020-12-17T12:18:00Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28927 | - |
dc.description.abstract | We have conducted a 3-mm molecular-line survey towards 570 high-mass star-forming clumps, using the Mopra telescope. The sample is selected from the 10 000 clumps identified by the ATLASGAL (APEX Telescope Large Area Survey of the Galaxy) survey and includes all of the most important embedded evolutionary stages associated with massive star formation, classified into five distinct categories (quiescent, protostellar, young stellar objects, H II regions, and photon-dominated regions). The observations were performed in broad-band mode with frequency coverage of 85.2-93.4 GHz and a velocity resolution of ∼0.9 km s<SUP>-1</SUP>, detecting emission from 26 different transitions. We find significant evolutionary trends in the detection rates, integrated line intensities, and abundances of many of the transitions and also identify a couple of molecules that appear to be invariant to changes in the dust temperature and evolutionary stage [N<SUB>2</SUB>H<SUP>+</SUP> (1-0) and HN<SUP>13</SUP>C (1-0)]. We use the K-ladders for CH<SUB>3</SUB>C<SUB>2</SUB>H (5-4) and CH<SUB>3</SUB>CH (5-4) to calculate the rotation temperatures and find around one-third of the quiescent clumps have rotation temperatures that suggest the presence of an internal heating source. These sources may constitute a population of very young protostellar objects that are still dark at 70 μm and suggest that the fraction of truly quiescent clumps may only be a few per cent. We also identify a number of line ratios that show a strong correlation with the evolutionary stage of the embedded objects and discuss their utility as diagnostic probes of evolution. | en_US |
dc.language.iso | eng | en_US |
dc.title | ATLASGAL - molecular fingerprints of a sample of massive star-forming clumps | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz154 | en_US |
dc.identifier.scopus | 2-s2.0-85062262886 | en_US |
dc.identifier.isi | 000462414400003 | en_US |
dc.identifier.url | http://arxiv.org/abs/1901.03759v1 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/484/4/4444/5289896 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 484 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 4444 | en_US |
dc.relation.lastpage | 4470 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.484.4444U | 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.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0003-3869-6501 | - |
crisitem.author.orcid | 0000-0003-1014-3390 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stz154.pdf | Pdf editoriale | 2.08 MB | Adobe PDF | View/Open |
1901.03759.pdf | postprint | 4.89 MB | Adobe PDF | View/Open |
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