Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29082
DC Field | Value | Language |
---|---|---|
dc.contributor.author | VITI, SERENA | en_US |
dc.contributor.author | FONTANI, FRANCESCO | en_US |
dc.contributor.author | Jiménez-Serra, Izaskun | en_US |
dc.contributor.author | Holdship, Jonathan | en_US |
dc.date.accessioned | 2020-12-22T09:51:56Z | - |
dc.date.available | 2020-12-22T09:51:56Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29082 | - |
dc.description.abstract | In star-forming regions in our own Galaxy, the <SUP>14</SUP>N/<SUP>15</SUP>N ratio is found to vary from ∼100 in meteorites, comets, and protoplanetary discs up to ∼1000 in pre-stellar and star-forming cores, while in external galaxies the very few single-dish large-scale measurements of this ratio lead to values of 100-450. The extent of the contribution of isotopic fractionation to these variations is, to date, unknown. In this paper, we present a theoretical chemical study of nitrogen fractionation in external galaxies in order to determine the physical conditions that may lead to a spread of the <SUP>14</SUP>N/<SUP>15</SUP>N ratio from the solar value of ∼440 and hence evaluate the contribution of chemical reactions in the interstellar medium (ISM) to nitrogen fractionation. We find that the main cause of ISM enrichment of nitrogen fractionation is high gas densities, aided by high fluxes of cosmic rays. | en_US |
dc.language.iso | eng | en_US |
dc.title | Nitrogen fractionation in external galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz1172 | en_US |
dc.identifier.scopus | 2-s2.0-85067953355 | en_US |
dc.identifier.isi | 000474908200026 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/486/4/4805/5482092 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 486 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 4805 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 4 | 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.486.4805V | 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.orcid | 0000-0003-0348-3418 | - |
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 | |
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stz1172.pdf | PDF editoriale | 949.87 kB | Adobe PDF | View/Open |
1904.11725.pdf | 574.86 kB | Adobe PDF | View/Open |
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