New empirical metal abundance calibrations for Washington photometry of G and K giants

An analysis of Washington photometric data of red giants in general galactic globular clusters demonstrates that the Washington abundance calibrations are affected by systematic errors due to the decrease of abundance sensitivity of (C-M) with the temperature. In this work we investigate and revise...

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Detalles Bibliográficos
Autores principales: Geisler, D., Clariá, J.J., Minniti, D.
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1990
Materias:
Astronomía
Galaxia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/142803
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-142803
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxia
spellingShingle Astronomía
Galaxia
Geisler, D.
Clariá, J.J.
Minniti, D.
New empirical metal abundance calibrations for Washington photometry of G and K giants
topic_facet Astronomía
Galaxia
description An analysis of Washington photometric data of red giants in general galactic globular clusters demonstrates that the Washington abundance calibrations are affected by systematic errors due to the decrease of abundance sensitivity of (C-M) with the temperature. In this work we investigate and revise the existing abundance calibrations. Using new CMT1T2 data of red giants in open clusters: (1) we redefine the fiducial lines for [M/H] = 0.0 in the colour-colour diagrams; (2) we demonstrate that the above mentioned effect depends on the metallicity, and (3) we obtain new empirical metal abundance calibrations. The individual CMT1T2 observations as well as the detailed results obtained in this study will be published elsewhere.
format Articulo
Comunicacion
author Geisler, D.
Clariá, J.J.
Minniti, D.
author_facet Geisler, D.
Clariá, J.J.
Minniti, D.
author_sort Geisler, D.
title New empirical metal abundance calibrations for Washington photometry of G and K giants
title_short New empirical metal abundance calibrations for Washington photometry of G and K giants
title_full New empirical metal abundance calibrations for Washington photometry of G and K giants
title_fullStr New empirical metal abundance calibrations for Washington photometry of G and K giants
title_full_unstemmed New empirical metal abundance calibrations for Washington photometry of G and K giants
title_sort new empirical metal abundance calibrations for washington photometry of g and k giants
publishDate 1990
url http://sedici.unlp.edu.ar/handle/10915/142803
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AT clariajj newempiricalmetalabundancecalibrationsforwashingtonphotometryofgandkgiants
AT minnitid newempiricalmetalabundancecalibrationsforwashingtonphotometryofgandkgiants
bdutipo_str Repositorios
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