Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29081
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Colzi, L. | en_US |
dc.contributor.author | FONTANI, FRANCESCO | en_US |
dc.contributor.author | Caselli, P. | en_US |
dc.contributor.author | Leurini, Silvia | en_US |
dc.contributor.author | Bizzocchi, L. | en_US |
dc.contributor.author | Quaia, G. | en_US |
dc.date.accessioned | 2020-12-22T09:46:27Z | - |
dc.date.available | 2020-12-22T09:46:27Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29081 | - |
dc.description.abstract | Nitrogen (N)-fractionation is used as a tool to search for a link between the chemical history of the Solar system and star-forming regions. A large variation of <SUP>14</SUP>N/<SUP>15</SUP>N is observed towards different astrophysical sources, and current chemical models cannot reproduce it. With the advent of high angular resolution radiotelescopes it is now possible to search for N-fractionation at core scales. We present IRAM NOEMA observations of the J= 1-0 transition of N<SUB>2</SUB>H<SUP>+, 15</SUP>NNH<SUP>+</SUP>, and N<SUP>15</SUP>NH<SUP>+</SUP> towards the high-mass protocluster IRAS 05358+3543. We find <SUP>14</SUP>N/<SUP>15</SUP>N ratios that span from ∼100 up to ∼220 and these values are lower or equal to those observed with single-dish observations towards the same source. Since N-fractionation changes across the studied region, this means that it is regulated by local environmental effects. We find also the possibility, for one of the four cores defined in the protocluster, to have a more abundant <SUP>15</SUP>NNH<SUP>+</SUP> with respect to N<SUP>15</SUP>NH<SUP>+</SUP>. This is another indication that current chemical models may be missing chemical reactions or may not take into account other mechanisms, like photodissociation or grain surface chemistry, that could be important. | en_US |
dc.language.iso | eng | en_US |
dc.title | First interferometric study of enhanced N-fractionation in N<SUB>2</SUB>H<SUP>+</SUP>: the high-mass star-forming region IRAS 05358+3543 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz794 | en_US |
dc.identifier.scopus | 2-s2.0-85066987660 | en_US |
dc.identifier.isi | 000474880400081 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/485/4/5543/5382062 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 485 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 5543 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 6 | 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.485.5543C | 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::PE9_6 Stars and stellar systems | 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 | O.A. Arcetri | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0003-0348-3418 | - |
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 | |
---|---|---|---|---|
1903.06567.pdf | 766.12 kB | Adobe PDF | View/Open | |
stz794.pdf | PDF editoriale | 4.52 MB | Adobe PDF | View/Open |
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