Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32927
DC Field | Value | Language |
---|---|---|
dc.contributor.author | BELLAZZINI, Michele | en_US |
dc.contributor.author | BRAGAGLIA, Angela | en_US |
dc.contributor.author | CARRETTA, Eugenio | en_US |
dc.contributor.author | Gratton, R. G. | en_US |
dc.contributor.author | LUCATELLO, Sara | en_US |
dc.contributor.author | CATANZARO, Giovanni | en_US |
dc.contributor.author | LEONE, FRANCESCO | en_US |
dc.date.accessioned | 2023-01-19T11:23:14Z | - |
dc.date.available | 2023-01-19T11:23:14Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32927 | - |
dc.description.abstract | We use accurate radial velocities for 1981 member stars in 20 Galactic globular clusters, collected within our large survey aimed at analyzing the Na-O anti-correlation, to study the internal kinematics of the clusters. We performed the first systematic exploration of the possible connections between cluster kinematics and the multiple populations phenomenon in GCs. We did not find any significant correlation between Na abundance and either velocity dispersion or systemic rotation. We searched for systemic rotation in the eight clusters of our sample that lack this analysis from previous works in the literature (NGC 2808, NGC 5904, NGC 6171, NGC 6254, NGC 6397, NGC 6388, NGC 6441, and NGC 6838). These clusters are found to span a wide range of rotational amplitudes from ~0.0 km s<SUP>-1</SUP> (NGC 6397) to ~13.0 km s<SUP>-1</SUP> (NGC 6441). We found a significant correlation between the ratio of rotational velocity to central velocity dispersion (V<SUB>rot</SUB>/σ<SUB>0</SUB>) and the horizontal branch morphology parameter (B - R)/(B + R + V). The ratio V<SUB>rot</SUB>/σ<SUB>0</SUB> is found to correlate also with metallicity, possibly hinting at a significant role for dissipation in the process of formation of globular clusters; V<SUB>rot</SUB> is found to correlate well with (B - R)/(B + R + V), M<SUB>V</SUB>, σ<SUB>0</SUB>, and [Fe/H]. All these correlations strongly suggest that systemic rotation may be intimately linked with the processes that led to the formation of globular clusters and the stellar populations they host. <P />Based on observations collected at ESO telescopes under programs 072.D-507, 073.D-0211 and 083.D-0208. | en_US |
dc.language.iso | eng | en_US |
dc.title | Na-O anticorrelation and HB. IX. Kinematics of the program clusters A link between systemic rotation and HB morphology? | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201118056 | en_US |
dc.identifier.scopus | 2-s2.0-84856390190 | en_US |
dc.identifier.url | http://arxiv.org/abs/1111.2688v2 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2012/02/aa18056-11/aa18056-11.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 538 | en_US |
dc.relation.firstpage | A18 | 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 | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2012A&A...538A..18B | 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.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairetype | Article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Catania | - |
crisitem.author.dept | O.A. Catania | - |
crisitem.author.orcid | 0000-0001-8200-810X | - |
crisitem.author.orcid | 0000-0002-0338-7883 | - |
crisitem.author.orcid | 0000-0002-1569-1911 | - |
crisitem.author.orcid | 0000-0001-8808-0073 | - |
crisitem.author.orcid | 0000-0003-4337-8612 | - |
crisitem.author.orcid | 0000-0001-7626-3788 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
aa18056-11.pdf | Pdf editoriale | 742.47 kB | Adobe PDF | View/Open |
Page view(s)
60
checked on Sep 1, 2024
Download(s)
11
checked on Sep 1, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.