Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31719
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Dalessandro, Emanuele | en_US |
dc.contributor.author | Varri, A. L. | en_US |
dc.contributor.author | Tiongco, M. | en_US |
dc.contributor.author | Vesperini, E. | en_US |
dc.contributor.author | Fanelli, C. | en_US |
dc.contributor.author | Mucciarelli, A. | en_US |
dc.contributor.author | ORIGLIA, Livia | en_US |
dc.contributor.author | BELLAZZINI, Michele | en_US |
dc.contributor.author | Saracino, S. | en_US |
dc.contributor.author | OLIVA, Ernesto | en_US |
dc.contributor.author | SANNA, Nicoletta | en_US |
dc.contributor.author | FABRIZIO, Michele | en_US |
dc.contributor.author | Livernois, A. | en_US |
dc.date.accessioned | 2022-03-18T14:31:19Z | - |
dc.date.available | 2022-03-18T14:31:19Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31719 | - |
dc.description.abstract | We present the first detailed observational picture of a possible ongoing massive cluster hierarchical assembly in the Galactic disk as revealed by the analysis of the stellar full phase space (3D positions and kinematics and spectro-photometric properties) of an extended area (6° diameter) surrounding the well-known h and χ Persei double stellar cluster in the Perseus Arm. Gaia-EDR3 shows that the area is populated by seven comoving clusters, three of which were previously unknown, and by an extended and quite massive (M ∼ 10<SUP>5</SUP> M<SUB>⊙</SUB>) halo. All stars and clusters define a complex structure with evidence of possible mutual interactions in the form of intra-cluster overdensities and/or bridges. They share the same chemical abundances (half-solar metallicity) and age (t ∼ 20 Myr) within a small confidence interval and the stellar density distribution of the surrounding diffuse stellar halo resembles that of a cluster-like stellar system. The combination of these pieces of evidence suggests that stars distributed within a few degrees from h and χ Persei are part of a common, substructured stellar complex that we named LISCA I. Comparison with results obtained through direct N-body simulations suggest that LISCA I may be at an intermediate stage of an ongoing cluster assembly that can eventually evolve in a relatively massive (a few times 10<SUP>5</SUP> M<SUB>⊙</SUB>) stellar system. We argue that such a cluster formation mechanism may be quite efficient in the Milky Way and disk-like galaxies and, as a consequence, it has a relevant impact on our understanding of cluster formation efficiency as a function of the environment and redshift. | en_US |
dc.language.iso | eng | en_US |
dc.title | First Phase Space Portrait of a Hierarchical Stellar Structure in the Milky Way | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/abda43 | en_US |
dc.identifier.scopus | 2-s2.0-85103251220 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85103251220 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/abda43 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 909 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 90 | 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 | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2021ApJ...909...90D | 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.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0003-4237-4601 | - |
crisitem.author.orcid | 0000-0002-6040-5849 | - |
crisitem.author.orcid | 0000-0001-8200-810X | - |
crisitem.author.orcid | 0000-0002-9123-0412 | - |
crisitem.author.orcid | 0000-0001-9275-9492 | - |
crisitem.author.orcid | 0000-0001-5829-111X | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2101.04133.pdf | preprint | 3.21 MB | Adobe PDF | View/Open |
Dalessandro_2021_ApJ_909_90.pdf | [Administrators only] | 1.3 MB | Adobe PDF |
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