Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27961
DC Field | Value | Language |
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dc.contributor.author | Bezanson, Rachel | en_US |
dc.contributor.author | VAN DER WEL, ARJEN | en_US |
dc.contributor.author | Pacifici, Camilla | en_US |
dc.contributor.author | Noeske, Kai | en_US |
dc.contributor.author | Barišić, Ivana | en_US |
dc.contributor.author | Bell, Eric F. | en_US |
dc.contributor.author | Brammer, Gabriel B. | en_US |
dc.contributor.author | Calhau, Joao | en_US |
dc.contributor.author | Chauke, Priscilla | en_US |
dc.contributor.author | van Dokkum, Pieter | en_US |
dc.contributor.author | Franx, Marijn | en_US |
dc.contributor.author | GALLAZZI, Anna Rita | en_US |
dc.contributor.author | van Houdt, Josha | en_US |
dc.contributor.author | Labbé, Ivo | en_US |
dc.contributor.author | Maseda, Michael V. | en_US |
dc.contributor.author | Muños-Mateos, Juan Carlos | en_US |
dc.contributor.author | Muzzin, Adam | en_US |
dc.contributor.author | van de Sande, Jesse | en_US |
dc.contributor.author | Sobral, David | en_US |
dc.contributor.author | Straatman, Caroline | en_US |
dc.contributor.author | Wu, Po-Feng | en_US |
dc.date.accessioned | 2020-10-23T12:38:32Z | - |
dc.date.available | 2020-10-23T12:38:32Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27961 | - |
dc.description.abstract | We present stellar rotation curves and velocity dispersion profiles for 104 quiescent galaxies at z = 0.6-1 from the Large Early Galaxy Astrophysics Census (LEGA-C) spectroscopic survey. Rotation is typically probed across 10-20 kpc, or to an average of 2.7R<SUB>e</SUB>. Combined with central stellar velocity dispersions (σ<SUB>0</SUB>) this provides the first determination of the dynamical state of a sample selected by a lack of star formation activity at large lookback time. The most massive galaxies (M<SUB>⋆</SUB> > 2 × 10<SUP>11</SUP> M<SUB>☉</SUB>) generally show no or little rotation measured at 5 kpc (| {V}<SUB>5</SUB>| /{σ }<SUB>0</SUB>< 0.2 in eight of ten cases), while ̃64% of less massive galaxies show significant rotation. This is reminiscent of local fast- and slow-rotating ellipticals and implies that low- and high-redshift quiescent galaxies have qualitatively similar dynamical structures. We compare | {V}<SUB>5</SUB>| /{σ }<SUB>0</SUB> distributions at z ̃ 0.8 and the present day by re-binning and smoothing the kinematic maps of 91 low-redshift quiescent galaxies from the Calar Alto Legacy Integral Field Area (CALIFA) survey and find evidence for a decrease in rotational support since z ̃ 1. This result is especially strong when galaxies are compared at fixed velocity dispersion; if velocity dispersion does not evolve for individual galaxies then the rotational velocity at 5 kpc was an average of 94 ± 22% higher in z ̃ 0.8 quiescent galaxies than today. Considering that the number of quiescent galaxies grows with time and that new additions to the population descend from rotationally supported star-forming galaxies, our results imply that quiescent galaxies must lose angular momentum between z ̃ 1 and the present, presumably through dissipationless merging, and/or that the mechanism that transforms star-forming galaxies also reduces their rotational support. | en_US |
dc.language.iso | eng | en_US |
dc.title | Spatially Resolved Stellar Kinematics from LEGA-C: Increased Rotational Support in z ̃ 0.8 Quiescent Galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/aabc55 | en_US |
dc.identifier.scopus | 2-s2.0-85047201665 | en_US |
dc.identifier.isi | 000431477400011 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/aabc55 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 858 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 60 | en_US |
dc.type.referee | REF_1 | 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 | 2018ApJ...858...60B | 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 | 0000-0002-9656-1800 | - |
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 | |
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Bezanson_2018_ApJ_858_60.pdf | Pdf editoriale | 6.75 MB | Adobe PDF | View/Open |
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