Abstract:
We present the results on the age and metallicity estimates of the Small Magellanic Cloud (SMC) clusters L110, L112 and L113 obtained from CCD Washington CT 1 photometry. We confirm L 113 as a relatively old and metal-poor cluster, and report for the first time that L 110 and 112 are also relatively old clusters (t ~ 6.5 Gyr). Their derived ages and metallicities reinforce previous suggestions that the farther a cluster is from the centre of the galaxy, the older and more metal-poor it is, with some dispersion. In addition, the bursting star formation model still appears to be the most probable paradigm to describe the SMC's star formation history. We call attention to a second possible burst at ~7 Gyr, besides the known burst at ~3 Gyr. © 2007 The Authors. Journal compilation © 2007 RAS.
Registro:
Documento: |
Artículo
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Título: | Two newly identified, relatively old star clusters in the Small Magellanic Cloud |
Autor: | Piatti, A.E.; Sarajedini, A.; Geisler, D.; Gallart, C.; Wischnjewsky, M. |
Filiación: | Instituto de Astronomía y Física del Espacio, CC 67, Suc. 28, 1428, Ciudad de Buenos Aires, Argentina Department of Astronomy, University of Florida, PO Box 112055, Gainesville, FL 32611, United States Grupo de Astronomía, Departamento de Física, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile Instituto de Astrofísica de Canarias, Calle Vía Lctea, E-38200, La Laguna, Tenerife, Spain
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Palabras clave: | Galaxies: individual: Small Magellanic Cloud; Galaxies: star clusters; Magellanic Clouds; Techniques: photometric |
Año: | 2007
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Volumen: | 381
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Número: | 1
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Página de inicio: | L84
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Página de fin: | L88
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DOI: |
http://dx.doi.org/10.1111/j.1745-3933.2007.00373.x |
Título revista: | Monthly Notices of the Royal Astronomical Society: Letters
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Título revista abreviado: | Mon. Not. R. Astron. Soc. Lett
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ISSN: | 17453933
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17453933_v381_n1_pL84_Piatti |
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Citas:
---------- APA ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Gallart, C. & Wischnjewsky, M.
(2007)
. Two newly identified, relatively old star clusters in the Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society: Letters, 381(1), L84-L88.
http://dx.doi.org/10.1111/j.1745-3933.2007.00373.x---------- CHICAGO ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Gallart, C., Wischnjewsky, M.
"Two newly identified, relatively old star clusters in the Small Magellanic Cloud"
. Monthly Notices of the Royal Astronomical Society: Letters 381, no. 1
(2007) : L84-L88.
http://dx.doi.org/10.1111/j.1745-3933.2007.00373.x---------- MLA ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Gallart, C., Wischnjewsky, M.
"Two newly identified, relatively old star clusters in the Small Magellanic Cloud"
. Monthly Notices of the Royal Astronomical Society: Letters, vol. 381, no. 1, 2007, pp. L84-L88.
http://dx.doi.org/10.1111/j.1745-3933.2007.00373.x---------- VANCOUVER ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Gallart, C., Wischnjewsky, M. Two newly identified, relatively old star clusters in the Small Magellanic Cloud. Mon. Not. R. Astron. Soc. Lett. 2007;381(1):L84-L88.
http://dx.doi.org/10.1111/j.1745-3933.2007.00373.x