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Further developments in star cluster spectral libraries†

Published online by Cambridge University Press:  18 January 2010

Andrea V. Ahumada ,
Juan J. Clariá ,
Eduardo Bica ,
Andrés E. Piatti ,
João F. C. Santos Jr. ,
M. Lorena Talavera ,
Tali Palma ,
Daniela B. Pavani ,
M. Celeste Parisi  and
M. Cristina Torres
...Show all authors
Andrea V. Ahumada
Affiliation:
European Southern Observatory, Alonso de Córdova 3107, Santiago, Chile email: aahumada@eso.org CONICET (Argentina) Observatorio Astronómico de la Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina email: claria@oac.uncor.edu, tali@oac.uncor.edu, celeste@oac.uncor.edu, crico@emprendinet.com.ar
Juan J. Clariá
Affiliation:
CONICET (Argentina) Observatorio Astronómico de la Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina email: claria@oac.uncor.edu, tali@oac.uncor.edu, celeste@oac.uncor.edu, crico@emprendinet.com.ar
Eduardo Bica
Affiliation:
Universidade Federal do Rio Grande do Sul, Departamento de Astronomia CP 15051, RS, Porto Alegre 91501-970, Brazil email: bica@if.ufrgs.br
Andrés E. Piatti
Affiliation:
CONICET (Argentina) Instituto de Astronomía y Física del Espacio, CC 67, Suc. 28, 1428, Ciudad de Buenos Aires, Argentina email: andres@iafe.uba.ar
João F. C. Santos Jr.
Affiliation:
Departamento de Fisica, ICEx, UFMG, CP 702, 30123-901, Belo Horizonte, MG, Brazil email: jsantos@fisica.ufmg.br
M. Lorena Talavera
Affiliation:
Observatorio Astronómico Centroamericano de Suyapa, Cdad. Univ., Boulevard Suyapa, Ap. Postal 4432, Tegucigalpa M. D. C., Honduras email: loren.briones@gmail.com
Tali Palma
Affiliation:
CONICET (Argentina) Observatorio Astronómico de la Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina email: claria@oac.uncor.edu, tali@oac.uncor.edu, celeste@oac.uncor.edu, crico@emprendinet.com.ar
Daniela B. Pavani
Affiliation:
Universidade Federal de Pelotas, Instituto de Física e Matemática, Dep. de Física, Campus Universitário, s/n, Caixa Postal 354, 96010-900 Pelotas, RS, Brazil email: dpavani@if.ufrgs.br
M. Celeste Parisi
Affiliation:
CONICET (Argentina) Observatorio Astronómico de la Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina email: claria@oac.uncor.edu, tali@oac.uncor.edu, celeste@oac.uncor.edu, crico@emprendinet.com.ar
M. Cristina Torres
Affiliation:
Observatorio Astronómico de la Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina email: claria@oac.uncor.edu, tali@oac.uncor.edu, celeste@oac.uncor.edu, crico@emprendinet.com.ar
Carlos M. Dutra
Affiliation:
Universidade Federal do Pampa, BR 472 km 592, CEP:97500-970, Uruguaiana, RS, Brazil email: cmdutra@gmail.com
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Abstract

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We present flux-calibrated integrated spectra in the optical spectral range of Galactic open clusters (GOCs) and Magellanic Cloud (MC) stellar clusters (SCs) obtained at CASLEO (Argentina). The SC parameters were derived using the equivalent-width (EW) method and the template-matching procedure by comparing the line strengths and continuum distribution of the cluster spectra with those of template spectra with known parameters. MC cluster reddening values were also estimated by interpolation between the available extinction maps. The derived ages for the GOCs range from 3 Myr to 4 Gyr, while those of the MC SCs vary from 3 Myr to 7 Gyr. E(B−V) colour-excess values in the MCs appear to be all lower than 0.17 mag, while those of the GOCs range from 0.00 to 2.40 mag. The present data led us to upgrade the spectral libraries of reference spectra or templates of solar and MC metallicities.

Keywords

galaxies: star clusterstechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S266: Star clusters: basic galactic building blocks throughout time and space , August 2009 , pp. 347 - 350
Copyright
Copyright © International Astronomical Union 2010

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