Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31104
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, Po-Feng | en_US |
dc.contributor.author | VAN DER WEL, ARJEN | en_US |
dc.contributor.author | Bezanson, Rachel | en_US |
dc.contributor.author | GALLAZZI, Anna Rita | en_US |
dc.contributor.author | Pacifici, Camilla | en_US |
dc.contributor.author | Straatman, Caroline M. S. | en_US |
dc.contributor.author | Barišić, Ivana | en_US |
dc.contributor.author | Bell, Eric F. | en_US |
dc.contributor.author | Chauke, Priscilla | en_US |
dc.contributor.author | D'Eugenio, Francesco | en_US |
dc.contributor.author | Franx, Marijn | en_US |
dc.contributor.author | Muzzin, Adam | en_US |
dc.contributor.author | Sobral, David | en_US |
dc.contributor.author | van Houdt, Josha | en_US |
dc.date.accessioned | 2021-11-17T15:40:00Z | - |
dc.date.available | 2021-11-17T15:40:00Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31104 | - |
dc.description.abstract | We analyze the colors and sizes of 32 quiescent (UVJ-selected) galaxies with strong Balmer absorption (EW(Hδ) ≥ 4 Å) at z ˜ 0.8 drawn from DR2 of the LEGA-C survey to test the hypothesis that these galaxies experienced compact, central starbursts before quenching. These recently quenched galaxies, usually referred to as post-starburst galaxies, span a wide range of colors, and we find a clear correlation between color and half-light radius, such that bluer galaxies are smaller. We build simple toy models to explain this correlation: a normal star-forming disk plus a central, compact starburst component. Bursts with exponential decay timescale of ˜100 Myr that produce ˜10% to more than 100% of the preexisting masses can reproduce the observed correlation. More significant bursts also produce bluer and smaller descendants. Our findings imply that when galaxies shut down star formation rapidly, they generally had experienced compact, starburst events and that the large, observed spread in sizes and colors mostly reflects a variety of burst strengths. Recently quenched galaxies should have younger stellar ages in the centers; multiwavelength data with high spatial resolution are required to reveal the age gradient. Highly dissipative processes should be responsible for this type of formation history. While determining the mechanisms for individual galaxies is challenging, some recently quenched galaxies show signs of gravitational interactions, suggesting that mergers are likely an important mechanism in triggering the rapid shutdown of star formation activities at z ˜ 0.8. | en_US |
dc.language.iso | eng | en_US |
dc.title | The Colors and Sizes of Recently Quenched Galaxies: A Result of Compact Starburst before Quenching | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ab5fd9 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ab5fd9 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 888 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 77 | 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 | 2020ApJ...888...77W | 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 | 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 | |
---|---|---|---|---|
1912.03683.pdf | preprint | 846.39 kB | Adobe PDF | View/Open |
Wu_2020_ApJ_888_77.pdf | [Administrators only] | 1.48 MB | Adobe PDF |
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