Early-type galaxies in the Antlia cluster: Global properties

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dc.contributor.authorCalderón, J.P.
dc.contributor.authorBassino, L.P.
dc.contributor.authorCellone, S.A.
dc.contributor.authorGómez, M.
dc.contributor.authorCaso, J.P.
dc.date.accessioned2021-07-30T02:19:00Z
dc.date.available2021-07-30T02:19:00Z
dc.date.issued2020-09
dc.descriptionIndexación; Scopus.es
dc.description.abstractWe present an extension of our previous research on the early-type galaxy population of the Antlia cluster (d ~ 35 Mpc), achieving a total coverage of ~2.6 deg2 and performing surface photometry for ~300 galaxies, 130 of which are new uncatalogued ones. Such new galaxies mainly fall in the low surface brightness (LSB) regime, but there are also some lenticulars (S0), which support the existence of unique functions that connect bright and dwarf galaxies in the scaling relations. We analyse the projected spatial distribution of galaxies up to a distance of ~800 kpc from NGC 3268, the adopted centre, as well as the radial velocity distribution and the correlation between galaxy colour and effective radius with the projected spatial distribution. We also obtain the luminosity function of the early-type galaxies and the distribution of stellar masses using the T1-band magnitudes and adopted mass-luminosity ratios. Additionally, we correlate the central galaxy distribution with an X-ray emission map from the literature. Based on the analysis of the radial velocities and galaxy colour distributions, we find that galaxies redder than the colour-magnitude relation (CMR) have a velocity distribution strongly concentrated towards the values of the dominant galaxies and are homogeneously distributed throughout the cluster. Those bluer than the CMR, in turn, have a much more extended radial velocity distribution and are concentrated towards the centre of the cluster. We also identify 12 candidates to ultra diffuse galaxies, which seem to be split into two families, and speculate about their origins in the context of the cluster structure. © 2020 The Author(s).es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/497/2/1791/5870689
dc.identifier.citationMonthly Notices of the Royal Astronomical SocietyOpen AccessVolume 497, Issue 2, Pages 1791 - 18061 September 2020es
dc.identifier.doi10.1093/mnras/staa2043
dc.identifier.issn0035-8711
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/19581
dc.language.isoenes
dc.publisherOxford University Presses
dc.subjectGalaxies: clusters: generales
dc.subjectGalaxies: clusters: individual: Antliaes
dc.subjectGalaxies: dwarfes
dc.subjectGalaxies: elliptical and lenticular, cDes
dc.subjectGalaxies: fundamental parameterses
dc.titleEarly-type galaxies in the Antlia cluster: Global propertieses
dc.typeArtículoes
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