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Old main-sequence turnoff photometry in the SMC: Star Formation History and Chemical Enrichment Law

Published online by Cambridge University Press:  01 December 2006

Noelia E. D. Noël ,
Carme Gallart ,
Antonio Aparicio ,
Sebastián L. Hidalgo ,
Ricardo Carrera ,
Edgardo Costa  and
René A. Méndez
Noelia E. D. Noël
Affiliation:
Instituto de Astrofísica de Canarias. 38200 La Laguna. Tenerife, Canary Islands. Spain email: noelia@iac.es
Carme Gallart
Affiliation:
Instituto de Astrofísica de Canarias. 38200 La Laguna. Tenerife, Canary Islands. Spain email: noelia@iac.es
Antonio Aparicio
Affiliation:
Instituto de Astrofísica de Canarias. 38200 La Laguna. Tenerife, Canary Islands. Spain email: noelia@iac.es
Sebastián L. Hidalgo
Affiliation:
University of Minnesota, Department of Astronomy, 116 Church St. S.E., Minneapolis, MN 55455
Ricardo Carrera
Affiliation:
Instituto de Astrofísica de Canarias. 38200 La Laguna. Tenerife, Canary Islands. Spain email: noelia@iac.es
Edgardo Costa
Affiliation:
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
René A. Méndez
Affiliation:
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
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Abstract

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We present deep ground-based B and R observations of 12 fields in the Small Magellanic Cloud (SMC). The resulting color-magnitude diagrams (CMDs) reach the oldest main-sequence (MS) turnoff at MR∼3.5 and reveal the stellar population differences between the part of the galaxy facing the Large Magellanic Cloud (LMC) and an area on the opposite side. In the Southern part of the galaxy, we found that there are still intermediate-age stars as far as 4 kpc from the SMC center. The Chemical Enrichment History (CEH) in one of our SMC fields is also presented.

Keywords

local group galaxies: individual (SMC) — galaxies: star formation history
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 305 - 309
Copyright
Copyright © International Astronomical Union 2007

References

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