Galaxy evolution in compact groups - I. Revealing a transitional galaxy population through a multiwavelength approach

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dc.contributor.authorMontaguth, G. P.
dc.contributor.authorTorres-Flores, S.
dc.contributor.authorMonachesi, A.
dc.contributor.authorGómez, F. A.
dc.contributor.authorLima-Dias, C.
dc.contributor.authorCortesi, A.
dc.contributor.authorde Oliveira, C. M.
dc.contributor.authorTelles, E.
dc.contributor.authorPanda, S.
dc.contributor.authorGrossi, M.
dc.contributor.authorLopes, P. A. A.
dc.contributor.authorHernandez-Jimenez, J. A.
dc.contributor.authorKanaan, A.
dc.contributor.authorRibeiro, T.
dc.contributor.authorSchoenell, W.
dc.date.accessioned2024-05-23T20:14:37Z
dc.date.available2024-05-23T20:14:37Z
dc.date.issued2023-07-28
dc.description.abstractCompact groups (CGs) of galaxies show members with morphological disturbances, mainly products of galaxy-galaxy interactions, thus making them ideal systems to study galaxy evolution, in high-density environment. To understand how this environment affects the properties of galaxies, we select a sample of 340 CGs in the Stripe 82 region, for a total of 1083 galaxies, and a sample of 2281 field galaxies as a control sample. By performing a multiwavelength morphological fitting process using Southern Photometric Local Universe Survey data, we divide our sample into early-type galaxies (ETGs), late-type galaxies (LTGs), and transition galaxies using the r-band Sersic index and the colour (u - r). We find a bimodal distribution in the plane of the effective radius - Sersic index, where a secondary 'peculiar' galaxy population of smaller and more compact galaxies is found in CGs, which is not observed in the control sample. This indicates that galaxies are undergoing a morphological transformation in CGs. In addition, we find significant statistical differences in the distribution of specific star-formation rate (sSFR) when we compare both environments for LTGs and ETGs. We also find a higher fraction of quenched galaxies and a lower median sSFR in CGs than in the control sample, suggesting the existence of environmental effects favouring the cessation of star formation, regardless of galaxy type. Our results support the notion that CGs promote morphological and physical transformations, highlighting their potential as ideal systems for galaxy pre-processing.
dc.identifier.citationMontaguth, G. P., Torres-Flores, S., Monachesi, A., Gómez, F. A., Lima-Dias, C., Cortesi, A., . . . Schoenell, W. (2023). Galaxy evolution in compact groups - I. Revealing a transitional galaxy population through a multiwavelength approach. Monthly Notices of the Royal Astronomical Society, 524(4), 5340-5356. https://doi.org/10.1093/mnras/stad2235
dc.identifier.issn0035-8711
dc.identifier.other1365-2966
dc.identifier.urihttps://conocimientoabierto.online/handle/123456789/37
dc.language.isoen
dc.publisherMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.subjectgalaxies: evolution
dc.subjectgalaxies: groups: general
dc.subjectgalaxies: interaction
dc.subjectgalaxies: structure
dc.subjectSTAR-FORMATION HISTORIES
dc.subjectMASS ASSEMBLY GAMA
dc.subjectDIGITAL SKY SURVEY
dc.subjectSTELLAR MASS
dc.subjectDATA RELEASE
dc.subjectCLUSTER GALAXIES
dc.subjectDIFFUSE LIGHT
dc.subjectPLUS
dc.subjectNATURAL SCIENCES::Biology::Organism biology::Morphology
dc.titleGalaxy evolution in compact groups - I. Revealing a transitional galaxy population through a multiwavelength approach
dc.typeArticle

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