NEW DENSITY PROFILE AND STRUCTURAL PARAMETERS OF THE COMPLEX STELLAR SYSTEM TERZAN 5

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dc.contributor.authorLanzoni, B.
dc.contributor.authorFerraro, F. R.
dc.contributor.authorDalessandro, E.
dc.contributor.authorMucciarelli, A.
dc.contributor.authorBeccari, G.
dc.contributor.authorMiocchi, P.
dc.contributor.authorBellazzini, M.
dc.contributor.authorRich, R. M.
dc.contributor.authorOriglia, L.
dc.contributor.authorValenti, E.
dc.contributor.authorRood, R. T.
dc.contributor.authorRansom, S. M.
dc.date.accessioned2025-01-21T00:05:22Z
dc.date.available2025-01-21T00:05:22Z
dc.date.issued2010
dc.description.abstractTerzan 5 is a globular cluster-like stellar system in the Galactic bulge which has been recently found to harbor two stellar populations with different iron content and probably different ages. This discovery suggests that Terzan 5 may be the relic of a primordial building block that contributed to the formation of the Galactic bulge. Here we present a re-determination of the structural parameters (center of gravity, density and surface brightness profiles, total luminosity, and mass) of Terzan 5, as obtained from the combination of high-resolution (ESO-MAD and Hubble Space Telescope ACS-WFC) and wide-field (ESO-WFI) observations. We find that Terzan 5 is significantly less concentrated and more massive than previously thought. Still it has the largest collision rate of any stellar aggregate in the Galaxy. We discuss the impact of these findings on the exceptional population of millisecond pulsars harbored in this stellar system.
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-637X/717/2/653
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.1088/0004-637X/717/2/653
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95545
dc.identifier.wosidWOS:000280650800004
dc.issue.numero2
dc.language.isoen
dc.pagina.final657
dc.pagina.inicio653
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectglobular clusters: individual (Terzan 5)
dc.subjectstars: evolution
dc.titleNEW DENSITY PROFILE AND STRUCTURAL PARAMETERS OF THE COMPLEX STELLAR SYSTEM TERZAN 5
dc.typeartículo
dc.volumen717
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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