Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29586
DC Field | Value | Language |
---|---|---|
dc.contributor.author | BELFIORE, FRANCESCO MICHEL CONCETTO | en_US |
dc.contributor.author | Maiolino, Roberto | en_US |
dc.contributor.author | Bundy, Kevin | en_US |
dc.contributor.author | Masters, Karen | en_US |
dc.contributor.author | Bershady, Matthew | en_US |
dc.contributor.author | Oyarzún, Grecco A. | en_US |
dc.contributor.author | Lin, Lihwai | en_US |
dc.contributor.author | Cano-Diaz, Mariana | en_US |
dc.contributor.author | Wake, David | en_US |
dc.contributor.author | Spindler, Ashley | en_US |
dc.contributor.author | Thomas, Daniel | en_US |
dc.contributor.author | Brownstein, Joel R. | en_US |
dc.contributor.author | Drory, Niv | en_US |
dc.contributor.author | Yan, Renbin | en_US |
dc.date.accessioned | 2021-01-07T16:08:08Z | - |
dc.date.available | 2021-01-07T16:08:08Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29586 | - |
dc.description.abstract | We study radial profiles in H α equivalent width and specific star formation rate (sSFR) derived from spatially resolved SDSS-IV MaNGA spectroscopy to gain insight on the physical mechanisms that suppress star formation and determine a galaxy's location in the SFR-M<SUB>⋆</SUB> diagram. Even within the star-forming `main sequence', the measured sSFR decreases with stellar mass, in both an integrated and spatially resolved sense. Flat sSFR radial profiles are observed for log(M<SUB>⋆</SUB>/M<SUB>☉</SUB>) < 10.5, while star-forming galaxies of higher mass show a significant decrease in sSFR in the central regions, a likely consequence of both larger bulges and an inside-out growth history. Our primary focus is the green valley, constituted by galaxies lying below the star formation main sequence, but not fully passive. In the green valley we find sSFR profiles that are suppressed with respect to star-forming galaxies of the same mass at all galactocentric distances out to 2 effective radii. The responsible quenching mechanism therefore appears to affect the entire galaxy, not simply an expanding central region. The majority of green valley galaxies of log(M<SUB>⋆</SUB>/M<SUB>☉</SUB>) > 10.0 are classified spectroscopically as central low-ionization emission-line regions (cLIERs). Despite displaying a higher central stellar mass concentration, the sSFR suppression observed in cLIER galaxies is not simply due to the larger mass of the bulge. Drawing a comparison sample of star-forming galaxies with the same M<SUB>⋆</SUB> and Σ _{1 kpc} (the mass surface density within 1 kpc), we show that a high Σ _{1 kpc} is not a sufficient condition for determining central quiescence. | en_US |
dc.language.iso | eng | en_US |
dc.title | SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty768 | en_US |
dc.identifier.scopus | 2-s2.0-85045537404 | en_US |
dc.identifier.isi | 000433893700013 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/477/3/3014/4951621 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 477 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 3014 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018MNRAS.477.3014B | 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_6 Stars and stellar systems | 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.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0002-2545-5752 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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sty768.pdf | PDF editoriale | 4.19 MB | Adobe PDF | View/Open |
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Items in DSpace are published in Open Access, unless otherwise indicated.