Stellar populations in NGC 5128 with the VLT: Evidence for recent star formation

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dc.contributor.authorRejkuba, M
dc.contributor.authorMinniti, D
dc.contributor.authorSilva, DR
dc.contributor.authorBedding, TR
dc.date.accessioned2025-01-21T01:30:37Z
dc.date.available2025-01-21T01:30:37Z
dc.date.issued2001
dc.description.abstractWe resolve stars of the nearest giant elliptical galaxy NGC 5128 using VLT with FORS1 and ISAAC. We construct deep U, V and K-s color-magnitude and color-color diagrams in two different halo fields (in the halo and in the north-eastern diffuse shell). In the outer, shell field, at similar to 14 kpc from the center of the galaxy, there is a significant recent star formation with stars as young as 10 Myr, approximately aligned with the prominent radio and X-ray jet from the nucleus of the host AGN. Ionized gas filaments are evident in ultraviolet images near the area where neutral Hi and CO molecular gas was previously observed. The underlying stellar population of the halo of the giant elliptical is predominantly old with a very broad metallicity distribution. The presence of an extended giant branch reaching M-bol = -5 mag suggests the existence of a significant intermediate-age AGB population in the halo of this galaxy.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:20011315
dc.identifier.issn1432-0746
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20011315
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96835
dc.identifier.wosidWOS:000172505100005
dc.issue.numero3
dc.language.isoen
dc.pagina.final797
dc.pagina.inicio781
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgalaxies : elliptical and lenticular, cD
dc.subjectgalaxies : stellar content
dc.subjectstars : fundamental parameters
dc.subjectgalaxies : individual : NGC 5128
dc.titleStellar populations in NGC 5128 with the VLT: Evidence for recent star formation
dc.typeartículo
dc.volumen379
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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