Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/23086
DC Field | Value | Language |
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dc.contributor.author | Kennedy, Rebecca | en_US |
dc.contributor.author | Bamford, Steven P. | en_US |
dc.contributor.author | Baldry, Ivan | en_US |
dc.contributor.author | Häußler, Boris | en_US |
dc.contributor.author | Holwerda, Benne W. | en_US |
dc.contributor.author | Hopkins, Andrew M. | en_US |
dc.contributor.author | Kelvin, Lee S. | en_US |
dc.contributor.author | Lange, Rebecca | en_US |
dc.contributor.author | Moffett, Amanda J. | en_US |
dc.contributor.author | Popescu, Cristina C. | en_US |
dc.contributor.author | Taylor, Edward N. | en_US |
dc.contributor.author | Tuffs, Richard J. | en_US |
dc.contributor.author | Vika, Marina | en_US |
dc.contributor.author | Vulcani, Benedetta | en_US |
dc.date.accessioned | 2020-03-03T13:14:23Z | - |
dc.date.available | 2020-03-03T13:14:23Z | - |
dc.date.issued | 2015 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/23086 | - |
dc.description | This paper is based on work made possible by NPRP award 08-643-1-112 from the Qatar National Research Fund (a member of The Qatar Foundation). GAMA is a joint European-Australasian project based around a spectroscopic campaign using the Anglo-Australian Telescope. The GAMA input catalogue is based on data taken from the Sloan Digital Sky Survey and the UKIRT Infrared Deep Sky Survey. Complementary imaging of the GAMA regions is being obtained by a number of independent survey programmes including GALEX MIS, VST KiDS, VISTA VIKING, WISE , Herschel -ATLAS, GMRT and ASKAP providing UV to radio coverage. GAMA is funded by the STFC (UK), the ARC (Australia), the AAO, and participating institutions. The GAMA website is http://www.gama-survey.org/ . SPB gratefully acknowledges the receipt of an STFC Advanced Fellowship. BV acknowledges the financial support from the World Premier International Research Center Initiative (WPI), MEXT, Japan and the Kakenhi Grant-in-Aid for Young Scientists (B)(26870140) from the Japan Society for the Promotion of Science (JSPS) We thank the anonymous referee for their comments, which helped to improve the presentation of this paper. | en |
dc.description.abstract | We study how the sizes and radial profiles of galaxies vary with wavelength, by fitting Sérsic functions simultaneously to imaging in nine optical and near-infrared bands. To quantify the wavelength dependence of effective radius we use the ratio, R, of measurements in two rest-frame bands. The dependence of Sérsic index on wavelength, N, is computed correspondingly. Vulcani et al. have demonstrated that different galaxy populations present sharply contrasting behaviour in terms of R and N. Here we study the luminosity dependence of this result. We find that at higher luminosities, early-type galaxies display a more substantial decrease in effective radius with wavelength, whereas late types present a more pronounced increase in Sérsic index. The structural contrast between types thus increases with luminosity. By considering samples at different redshifts, we demonstrate that lower data quality reduces the apparent difference between the main galaxy populations. However, our conclusions remain robust to this effect. We show that accounting for different redshift and luminosity selections partly reconciles the size variation measured by Vulcani et al. with the weaker trends found by other recent studies. Dividing galaxies by visual morphology confirms the behaviour inferred using morphological proxies, although the sample size is greatly reduced. Finally, we demonstrate that varying dust opacity and disc inclination can account for features of the joint distribution of R and N for late-type galaxies. However, dust does not appear to explain the highest values of R and N. The bulge-disc nature of galaxies must also contribute to the wavelength dependence of their structure. | en_US |
dc.language.iso | eng | en_US |
dc.title | Galaxy And Mass Assembly (GAMA): the wavelength dependence of galaxy structure versus redshift and luminosity | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stv2032 | en_US |
dc.identifier.scopus | 2-s2.0-84964771957 | en_US |
dc.identifier.isi | 000363657000058 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/454/1/806/1141935 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 454 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 806 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 14 | en_US |
dc.description.international | sì | 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 | 2015MNRAS.454..806K | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegherò 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. Padova | - |
crisitem.author.orcid | 0000-0003-0980-1499 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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