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Full metadata record
DC Field | Value | Language |
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dc.contributor.advisor | Solanes, José M. (José María) | - |
dc.contributor.author | Tous Mayol, Josep Lluís | - |
dc.date.accessioned | 2020-01-08T12:35:22Z | - |
dc.date.available | 2020-01-08T12:35:22Z | - |
dc.date.issued | 2018-06 | - |
dc.identifier.uri | http://hdl.handle.net/2445/147221 | - |
dc.description | Màster Oficial d'Astrofísica, Física de Partícules i Cosmologia, Facultat de Física, Universitat de Barcelona, Curs: 2017-2018, Tutor: Josep Maria Solanes Majúa | ca |
dc.description.abstract | We aim to investigate the possibility that the formation pathway of lenticular galaxies depends on the environment, using their spectra. To this end, we estimate extinction-corrected local densities for all the galaxies with z . 0:1 in the Sloan Digital Sky Survey Data Release 12 within the limits of the Legacy Survey. The local densities are cross-matched with two morphological catalogues, one in which galaxies are visually classified by Nair and Abraham (2010), and one in which morphologies are assigned by a neural network based classification by Domínguez Sánchez et al. (2018), in order to compile subsets of lenticular galaxies in low- and high-density environments. We also compute the mean spectra representative of each one of the datasets by stacking the normalized, rest-frame shifted individual spectra. The efffects of inclination biases and morphological misclassifications in these composite spectra are discussed. We find that lenticular galaxies in low-density regions are generally bluer with enhanced emission lines in comparison with their high-density counterparts. The comparative also reveals a possible excess of automatically classified S0 galaxies in low-density regions with a relevant reservoir of ionized gas and star formation activity, which may indicate contamination from Sa. In visually classified galaxies the misclassification errors involve both Sa and E and tend to be more important in galaxies with intermediate (30o < i < 60o) inclinations | ca |
dc.format.extent | 23 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | ca |
dc.rights | cc-by-nc-nd (c) Tous, 2018 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.source | Màster Oficial - Astrofísica, Física de Partícules i Cosmologia | - |
dc.subject.classification | Formació de les galàxies | cat |
dc.subject.classification | Treballs de fi de màster | cat |
dc.subject.classification | Galaxy formation | eng |
dc.subject.other | Master's theses | eng |
dc.title | Spectral features of SO Galaxies in low- and high-density environments | eng |
dc.type | info:eu-repo/semantics/masterThesis | ca |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca |
Appears in Collections: | Màster Oficial - Astrofísica, Física de Partícules i Cosmologia |
Files in This Item:
File | Description | Size | Format | |
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TFM_Tous_Mayol_José_Luis.pdf | 4.51 MB | Adobe PDF | View/Open |
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