Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27952
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhu, Ling | en_US |
dc.contributor.author | van de Ven, Glenn | en_US |
dc.contributor.author | van den Bosch, Remco | en_US |
dc.contributor.author | Rix, Hans-Walter | en_US |
dc.contributor.author | Lyubenova, Mariya | en_US |
dc.contributor.author | Falcón-Barroso, Jesús | en_US |
dc.contributor.author | Martig, Marie | en_US |
dc.contributor.author | Mao, Shude | en_US |
dc.contributor.author | Xu, Dandan | en_US |
dc.contributor.author | Jin, Yunpeng | en_US |
dc.contributor.author | Obreja, Aura | en_US |
dc.contributor.author | Grand, Robert J. J. | en_US |
dc.contributor.author | Dutton, Aaron A. | en_US |
dc.contributor.author | Macciò, Andrea V. | en_US |
dc.contributor.author | Gómez, Facundo A. | en_US |
dc.contributor.author | Walcher, Jakob C. | en_US |
dc.contributor.author | García-Benito, Rubén | en_US |
dc.contributor.author | ZIBETTI, Stefano | en_US |
dc.contributor.author | Sánchez, Sebastian F. | en_US |
dc.date.accessioned | 2020-10-23T10:26:54Z | - |
dc.date.available | 2020-10-23T10:26:54Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 2397-3366 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27952 | - |
dc.description.abstract | Galaxy formation entails the hierarchical assembly of mass, along with the condensation of baryons and the ensuing, self-regulating star formation<SUP>1,2</SUP>. The stars form a collisionless system whose orbit distribution retains dynamical memory that can constrain a galaxy's formation history<SUP>3</SUP>. The orbits dominated by ordered rotation, with near-maximum circularity λ<SUB>z</SUB> ≈ 1, are called kinematically cold, and the orbits dominated by random motion, with low circularity λ<SUB>z</SUB> ≈ 0, are kinematically hot. The fraction of stars on `cold' orbits, compared with the fraction on `hot' orbits, speaks directly to the quiescence or violence of the galaxies' formation histories<SUP>4,5</SUP>. Here we present such orbit distributions, derived from stellar kinematic maps through orbit-based modelling for a well-defined, large sample of 300 nearby galaxies. The sample, drawn from the CALIFA survey<SUP>6</SUP>, includes the main morphological galaxy types and spans a total stellar mass range from 10<SUP>8.7</SUP> to 10<SUP>11.9</SUP> solar masses. Our analysis derives the orbit-circularity distribution as a function of galaxy mass and its volume-averaged total distribution. We find that across most of the considered mass range and across morphological types, there are more stars on `warm' orbits defined as 0.25 ≤ λ<SUB>z</SUB> ≤ 0.8 than on either `cold' or `hot' orbits. This orbit-based `Hubble diagram' provides a benchmark for galaxy formation simulations in a cosmological context. | en_US |
dc.language.iso | eng | en_US |
dc.title | The stellar orbit distribution in present-day galaxies inferred from the CALIFA survey | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41550-017-0348-1 | en_US |
dc.identifier.scopus | 2-s2.0-85042698787 | en_US |
dc.identifier.isi | 000429087000020 | en_US |
dc.identifier.url | https://www.nature.com/articles/s41550-017-0348-1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 2 | en_US |
dc.relation.firstpage | 233 | 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 | NATURE ASTRONOMY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018NatAs...2..233Z | 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_8 Formation and evolution of galaxies | 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 | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-1734-8356 | - |
crisitem.journal.journalissn | 2397-3366 | - |
crisitem.journal.ance | E240167 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1711.06728.pdf | preprint | 2.77 MB | Adobe PDF | View/Open |
Nature astr.s41550-017-0348-1.pdf | [Administrators only] | 3.69 MB | Adobe PDF |
Page view(s)
30
checked on Apr 23, 2024
Download(s)
10
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.