Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/30536
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Enia, A. | en_US |
dc.contributor.author | Negrello, M. | en_US |
dc.contributor.author | Gurwell, M. | en_US |
dc.contributor.author | Dye, S. | en_US |
dc.contributor.author | Rodighiero, G. | en_US |
dc.contributor.author | MASSARDI, MARCELLA | en_US |
dc.contributor.author | De Zotti, G. | en_US |
dc.contributor.author | Franceschini, A. | en_US |
dc.contributor.author | Cooray, A. | en_US |
dc.contributor.author | van der Werf, P. | en_US |
dc.contributor.author | Birkinshaw, M. | en_US |
dc.contributor.author | Michałowski, M. J. | en_US |
dc.contributor.author | Oteo, I. | en_US |
dc.date.accessioned | 2021-02-22T17:40:42Z | - |
dc.date.available | 2021-02-22T17:40:42Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30536 | - |
dc.description.abstract | We perform lens modelling and source reconstruction of Sub-millimetre Array (SMA) data for a sample of 12 strongly lensed galaxies selected at 500μm in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). A previous analysis of the same data set used a single Sérsic profile to model the light distribution of each background galaxy. Here we model the source brightness distribution with an adaptive pixel scale scheme, extended to work in the Fourier visibility space of interferometry. We also present new SMA observations for seven other candidate lensed galaxies from the H-ATLAS sample. Our derived lens model parameters are in general consistent with previous findings. However, our estimated magnification factors, ranging from 3 to 10, are lower. The discrepancies are observed in particular where the reconstructed source hints at the presence of multiple knots of emission. We define an effective radius of the reconstructed sources based on the area in the source plane where emission is detected above 5σ. We also fit the reconstructed source surface brightness with an elliptical Gaussian model. We derive a median value r<SUB>eff</SUB> ∼ 1.77 kpc and a median Gaussian full width at half-maximum ∼1.47 kpc. After correction for magnification, our sources have intrinsic star formation rates (SFR) ∼ 900-3500 M<SUB>☉</SUB> yr<SUP>-1</SUP>, resulting in a median SFR surface density Σ<SUB>SFR</SUB> ∼ 132 M<SUB>☉</SUB> yr<SUP>-1</SUP> kpc<SUP>-2</SUP> (or ∼218 M<SUB>☉</SUB> yr<SUP>-1</SUP> kpc<SUP>-2</SUP> for the Gaussian fit). This is consistent with that observed for other star-forming galaxies at similar redshifts, and is significantly below the Eddington limit for a radiation pressure regulated starburst. | en_US |
dc.language.iso | eng | en_US |
dc.title | The Herschel-ATLAS: magnifications and physical sizes of 500-μm-selected strongly lensed galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty021 | en_US |
dc.identifier.scopus | 2-s2.0-85042435733 | en_US |
dc.identifier.isi | 000427141900042 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/475/3/3467/4795318 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 475 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 3467 | 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.475.3467E | 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.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-0375-8330 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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1801.01831.pdf | 2.93 MB | Adobe PDF | Visualizza/apri | |
sty021.pdf | PDF editoriale | 4.85 MB | Adobe PDF | Visualizza/apri |
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