Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26226
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lanzoni, B. | en_US |
dc.contributor.author | Ferraro, F. R. | en_US |
dc.contributor.author | Alessandrini, E. | en_US |
dc.contributor.author | Dalessandro, Emanuele | en_US |
dc.contributor.author | Vesperini, E. | en_US |
dc.contributor.author | Raso, S. | en_US |
dc.date.accessioned | 2020-06-26T10:15:21Z | - |
dc.date.available | 2020-06-26T10:15:21Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 2041-8205 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26226 | - |
dc.description.abstract | We used a sample of 25 Galactic globular clusters to empirically measure the parameter A + recently introduced by Alessandrini et al., and defined as the area enclosed between the cumulative radial distribution of blue straggler stars (BSSs) and that of a reference population. Based on N-body simulations, this parameter is expected to efficiently measure the level of BSS central segregation. Observationally, for a proper cluster-to-cluster comparison we use {A}{rh}+, I.e., the value of the parameter determined out to the half-mass radius in each system. We find that {A}{rh}+ nicely correlates with the position of the minimum of the BSS normalized radial distribution and with the cluster central relaxation time. This demonstrates that it is a sensitive indicator of the cluster dynamical age as traced by the spatial segregation of the BSS population. In the context of the “stellar system dynamical clock,” this parameter provides a new clock-hand, which is easier to determine observationally and allows a more robust measure of the cluster dynamical age. | en_US |
dc.language.iso | eng | en_US |
dc.title | Refining the dynamical clock for star clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/2041-8213/833/2/L29 | en_US |
dc.identifier.scopus | 2-s2.0-85006915762 | en_US |
dc.identifier.isi | 000391607900004 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/2041-8213/833/2/L29 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 833 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | L29 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL LETTERS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...833L..29L | 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.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 | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-4237-4601 | - |
crisitem.journal.journalissn | 2041-8205 | - |
crisitem.journal.ance | E196528 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Lanzoni_2016_ApJL_833_L29.pdf | Pdf editoriale | 283.92 kB | Adobe PDF | View/Open |
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