Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/34670
Campo DC | Valore | Lingua |
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dc.contributor.author | Milone, A. P. | en_US |
dc.contributor.author | Marino, A. F. | en_US |
dc.contributor.author | BEDIN, Luigi | en_US |
dc.contributor.author | Anderson, J. | en_US |
dc.contributor.author | Apai, D. | en_US |
dc.contributor.author | Bellini, A. | en_US |
dc.contributor.author | Dieball, A. | en_US |
dc.contributor.author | Salaris, M. | en_US |
dc.contributor.author | Libralato, M. | en_US |
dc.contributor.author | Nardiello, D. | en_US |
dc.contributor.author | Bergeron, P. | en_US |
dc.contributor.author | Burgasser, A. J. | en_US |
dc.contributor.author | Rees, J. M. | en_US |
dc.contributor.author | Rich, R. M. | en_US |
dc.contributor.author | Richer, H. B. | en_US |
dc.date.accessioned | 2024-01-30T16:08:04Z | - |
dc.date.available | 2024-01-30T16:08:04Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/34670 | - |
dc.description.abstract | Historically, multiple populations in globular clusters (GCs) have been mostly studied from ultraviolet and optical filters down to stars that are more massive than ∼0.6 M_{\odot }. Here, we exploit deep near-infrared (NIR) photometry from the Hubble Space Telescope to investigate multiple populations among M-dwarfs in the GC NGC 6752. We discovered that the three main populations (A, B, and C), previously observed in the brightest part of the colour-magnitude diagram (CMD), define three distinct sequences that run from the main-sequence (MS) knee towards the bottom of the MS (∼0.15 {M}_{\odot }). These results, together with similar findings on NGC 2808, M 4, and ω Centauri, demonstrate that multiple sequences of M-dwarfs are common features of the CMDs of GCs. The three sequences of low-mass stars in NGC 6752 are consistent with stellar populations with different oxygen abundances. The range of [O/Fe] needed to reproduce the NIR CMD of NGC 6752 is similar to the oxygen spread inferred from high-resolution spectroscopy of red giant branch (RGB) stars. The relative numbers of stars in the three populations of M-dwarfs are similar to those derived among RGB and MS stars more massive than ∼0.6 M_{\odot }. As a consequence, the evidence that the properties of multiple populations do not depend on stellar mass is a constraint for the formation scenarios. | en_US |
dc.language.iso | eng | en_US |
dc.title | The HST Large Programme on NGC 6752 - II. Multiple populations at the bottom of the main sequence probed in NIR | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz277 | en_US |
dc.identifier.scopus | 2-s2.0-85062281933 | en_US |
dc.identifier.url | http://arxiv.org/abs/1901.07230v1 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/484/3/4046/5301422 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 484 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 4046 | en_US |
dc.relation.lastpage | 4053 | 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.484.4046M | 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.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0003-4080-6466 | - |
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