MAPPING DIFFERENTIAL REDDENING IN THE INNER GALACTIC GLOBULAR CLUSTER SYSTEM

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dc.contributor.authorAlonso-Garcia, Javier
dc.contributor.authorMateo, Mario
dc.contributor.authorSen, Bodhisattva
dc.contributor.authorBanerjee, Moulinath
dc.contributor.authorvon Braun, Kaspar
dc.date.accessioned2025-01-21T00:02:16Z
dc.date.available2025-01-21T00:02:16Z
dc.date.issued2011
dc.description.abstractA serious limitation in the study of many globular clusters-especially those located near the Galactic center-has been the existence of large and differential extinction by foreground dust. In a series of papers, we intend to map the differential extinction and remove its effects, using a new dereddening technique, in a sample of clusters in the direction of the inner Galaxy, observed using the Magellan 6.5 m telescope and the Hubble Space Telescope. These observations and their analysis will let us produce high-quality color-magnitude diagrams of these poorly studied clusters that will allow us to determine these clusters' relative ages, distances, and chemistry and to address important questions about the formation and the evolution of the inner Galaxy. We also intend to use the maps of the differential extinction to sample and characterize the interstellar medium along the numerous low-latitude lines of sight where the clusters in our sample lie. In this first paper, we describe in detail our dereddening method along with the powerful statistics tools that allow us to apply it, and we show the kind of results that we can expect, applying the method to M62, one of the clusters in our sample. The width of the main sequence and lower red giant branch narrows by a factor of two after applying our dereddening technique, which will significantly help to constrain the age, distance, and metallicity of the cluster.
dc.description.funderNASA
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-6256/141/5/146
dc.identifier.eissn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttps://doi.org/10.1088/0004-6256/141/5/146
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95417
dc.identifier.wosidWOS:000289240800005
dc.issue.numero5
dc.language.isoen
dc.revistaAstronomical journal
dc.rightsacceso restringido
dc.subjectdust, extinction
dc.subjectGalaxy: bulge
dc.subjectglobular clusters: general
dc.subjectglobular clusters: individual (NGC 6266, M62)
dc.subjectmethods: statistical
dc.titleMAPPING DIFFERENTIAL REDDENING IN THE INNER GALACTIC GLOBULAR CLUSTER SYSTEM
dc.typeartículo
dc.volumen141
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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