Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29678
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, Z. H. | en_US |
dc.contributor.author | Pinfield, D. J. | en_US |
dc.contributor.author | Gálvez-Ortiz, M. C. | en_US |
dc.contributor.author | Homeier, D. | en_US |
dc.contributor.author | Burgasser, A. J. | en_US |
dc.contributor.author | Lodieu, N. | en_US |
dc.contributor.author | Martín, E. L. | en_US |
dc.contributor.author | Zapatero Osorio, M. R. | en_US |
dc.contributor.author | Allard, F. | en_US |
dc.contributor.author | Jones, H. R. A. | en_US |
dc.contributor.author | SMART, Richard Laurence | en_US |
dc.contributor.author | López Martí, B. | en_US |
dc.contributor.author | Burningham, B. | en_US |
dc.contributor.author | Rebolo, R. | en_US |
dc.date.accessioned | 2021-01-12T08:21:01Z | - |
dc.date.available | 2021-01-12T08:21:01Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29678 | - |
dc.description.abstract | We report the discovery of an esdL3 subdwarf, ULAS J020858.62+020657.0, and a usdL4.5 subdwarf, ULAS J230711.01+014447.1. They were identified as L subdwarfs by optical spectra obtained with the Gran Telescopio Canarias, and followed up by optical-to-near-infrared spectroscopy with the Very Large Telescope. We also obtained an optical-to-near-infrared spectrum of a previously known L subdwarf, ULAS J135058.85+081506.8, and reclassified it as a usdL3 subdwarf. These three objects all have typical halo kinematics. They have T<SUB>eff</SUB> around 2050-2250 K, -1.8 ≤ [Fe/H] ≤ -1.5, and mass around 0.0822-0.0833 M<SUB>☉</SUB>, according to model spectral fitting and evolutionary models. These sources are likely halo transitional brown dwarfs with unsteady hydrogen fusion, as their masses are just below the hydrogen-burning minimum mass, which is ∼ 0.0845 M<SUB>☉</SUB> at [Fe/H] = -1.6 and ∼ 0.0855 M<SUB>☉</SUB> at [Fe/H] = -1.8. Including these, there are now nine objects in the `halo brown dwarf transition zone', which is a `substellar subdwarf gap' that spans a wide temperature range within a narrow mass range of the substellar population. | en_US |
dc.language.iso | eng | en_US |
dc.title | Primeval very low-mass stars and brown dwarfs - III. The halo transitional brown dwarfs | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty1352 | en_US |
dc.identifier.scopus | 2-s2.0-85055343067 | en_US |
dc.identifier.isi | 000441295800100 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/479/1/1383/5001885 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 479 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 1383 | en_US |
dc.type.referee | REF_1 | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | ESP | 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 | 2018MNRAS.479.1383Z | 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.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.orcid | 0000-0002-4424-4766 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2018_Zhang_primeval3_mn.pdf | 2.79 MB | Adobe PDF | View/Open | |
sty1352.pdf | Pdf editoriale | 2.04 MB | Adobe PDF | View/Open |
Page view(s)
67
checked on Mar 28, 2024
Download(s)
20
checked on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.