Extragalactic globular clusters in the near infrared - III. NGC 5846 and NGC 7192 - Quantifying the age distribution of sub-populations

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dc.contributor.authorHempel, M.
dc.contributor.authorHilker, M.
dc.contributor.authorKissler-Patig, M.
dc.contributor.authorPuzia, T.H.
dc.contributor.authorMinniti, D.
dc.contributor.authorGoudfrooij, P.
dc.date.accessioned2025-01-21T01:09:13Z
dc.date.available2025-01-21T01:09:13Z
dc.date.issued2003
dc.description.abstractIn this third paper of our series on near-IR and optical photometry of globular cluster systems in early-type galaxies we concentrate on the photometric results for NGC 5846 and NGC 7192, two group ellipticals, and on a first comparison between the globular cluster systems investigated so far. In NGC 5846 the colour-colour diagram shows clear bi-modality in (V - K), which is confirmed by a KMM test. The mean colour of both peaks were estimated to be (V - K)(blue) = 2.57 +/- 0.06 and (V - K)(red) = 3.18 +/- 0.06. The situation in NGC 7192 is different, in that the colour-colour diagram gives no evidence for a distinct second population of globular clusters. Using simulated colour distributions of globular cluster systems, we make a first step in quantifying the cumulative age distribution in globular cluster systems. Also here the result for NGC 5846 leads us to the conclusion that its metal-rich globular cluster population contains two globular cluster populations which differ in age by several Gyr. The age structure for NGC 7192 shows instead strong similarity with a single-age population.
dc.fechaingreso.objetodigital2025-03-19
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:20030598
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20030598
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96558
dc.identifier.wosidWOS:000183615700012
dc.issue.numeroNo. 2
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final497
dc.pagina.inicio487
dc.revistaAstronomy & astrophysics
dc.rightsacceso abierto
dc.subjectgalaxies : star clusters
dc.subjectgalaxies : individual : NGC 5846, NGC 7192
dc.titleExtragalactic globular clusters in the near infrared - III. NGC 5846 and NGC 7192 - Quantifying the age distribution of sub-populations
dc.typeartículo
dc.volumenVol. 405
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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