Photometric characterization of a well-defined sample of isolated galaxies in the context of the AMIGA project

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dc.contributor.authorDurbala, A.
dc.contributor.authorSulentic, J. W.
dc.contributor.authorButa, R.
dc.contributor.authorVerdes-Montenegro, L.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherConsejo Superior de Investigaciones Cientificas (CSIC)
dc.contributor.otherCSIC - Instituto de Astrofisica de Andalucia (IAA)
dc.date.accessioned2019-07-30T18:26:57Z
dc.date.available2019-07-30T18:26:57Z
dc.date.issued2008-11-01
dc.description.abstractWe perform a detailed photometric analysis (bulge-disc-bar decomposition and Concentration-Asymmetry-Clumpiness - CAS parametrization) for a well-defined sample of isolated galaxies, extracted from the Catalog of Isolated Galaxies and reevaluated morphologically in the context of the Analysis of the interstellar Medium of Isolated GAlaxies project. We focus on Sb-Sc morphological types, as they are the most representative population among the isolated spiral galaxies. Our analysis yields a large number of important galactic parameters and various correlation plots are used to seek relationships that might shed light on the processes involved in determining those parameters. Assuming that the bulge Sersic index and/or bulge/total luminosity ratios are reasonable diagnostics for pseudo- versus classical bulges, we conclude that the majority of late-type isolated disc galaxies likely host pseudo-bulges rather than classical bulges. Our parametrization of galactic bulges and discs suggests that the properties of the pseudo-bulges are strongly connected to those of the discs. This may indicate that pseudo-bulges are formed through internal processes within the discs (i.e. secular evolution) and that bars may play an important role in their formation. Although the sample under investigation covers a narrow morphological range, a clear separation between Sb and Sbc-Sc types is observed in various measures, e.g. the former are redder, brighter, have larger discs and bars, more luminous bulges, are more concentrated, more symmetric and clumpier than the latter. A comparison with samples of spiral galaxies (within the same morphological range) selected without isolation criteria reveals that the isolated galaxies tend to host larger bars, are more symmetric, less concentrated and less clumpy.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationDurbala, A., Buta, R., Sulentic, J., Verdes-Montenegro, L. (2008): Photometric Characterization of a Well-defined Sample of Isolated Galaxies in the Context of the AMIGA Project. Monthly Notices of the Royal Astronomical Society, 390(3). DOI: https://doi.org/10.1111/j.1365-2966.2008.13713.x
dc.identifier.doi10.1111/j.1365-2966.2008.13713.x
dc.identifier.orcidhttps://orcid.org/0000-0003-0156-6180
dc.identifier.urihttp://ir.ua.edu/handle/123456789/6056
dc.languageEnglish
dc.language.isoen_US
dc.publisherOxford University Press
dc.subjectgalaxies: bulges
dc.subjectgalaxies: evolution
dc.subjectgalaxies: fundamental parameters
dc.subjectgalaxies: general
dc.subjectgalaxies: photometry
dc.subjectgalaxies: structure
dc.subjectDIGITAL SKY SURVEY
dc.subjectPRELIMINARY LUMINOSITY CLASSIFICATION
dc.subjectDISK-DOMINATED GALAXIES
dc.subjectLATE-TYPE SPIRALS
dc.subjectTO-LIGHT RATIOS
dc.subjectSECULAR EVOLUTION
dc.subjectBARRED GALAXIES
dc.subjectSURFACE PHOTOMETRY
dc.subjectSTAR-FORMATION
dc.subjectSTRUCTURAL PARAMETERS
dc.subjectAstronomy & Astrophysics
dc.titlePhotometric characterization of a well-defined sample of isolated galaxies in the context of the AMIGA projecten_US
dc.typetext
dc.typeReview

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