An empirical tool to derive metallicity, reddening and distance for old stellar populations from near IR Color Magnitude Diagrams

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dc.creatorFerraro, F. R.
dc.creatorValenti, E.
dc.creatorOriglia, L.
dc.date2006-05-19
dc.date.accessioned2026-07-07T10:39:03Z
dc.date.available2026-07-07T10:39:03Z
dc.descriptionWe present an empirical method to derive photometric metallicity, reddening and distance to old stellar populations by using a few major features of the Red Giant Branch (RGB) in near IR color magnitude diagrams. We combine the observed RGB features with a set of equations linking the global metallicity [M/H] to suitable RGB parameters (colors, magnitudes and slope), as calibrated from a homogeneous sample of Galactic Globular Clusters with different metallicities. This technique can be applied to efficiently derive the main population parameters of old stellar systems, in the view of using ground-based adaptive optics and space facilities to probe the stellar content of remote galaxies.
dc.description16 pages, 4 figures, accepted for pubblication on ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0605492
dc.identifierhttp://arxiv.org/abs/astro-ph/0605492
dc.identifierAstrophys.J.649:243-247,2006
dc.identifierdoi:10.1086/506013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180892
dc.subjectAstrophysics
dc.titleAn empirical tool to derive metallicity, reddening and distance for old stellar populations from near IR Color Magnitude Diagrams
dc.typetext

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