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Towards a calibration of SSP models from the optical to the mid-infrared

Published online by Cambridge University Press:  01 December 2006

P. Pessev ,
P. Goudfrooij ,
T. Puzia  and
R. Chandar
P. Pessev
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A.pessev@stsci.edu, goudfroo@stsci.edu
P. Goudfrooij
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A.pessev@stsci.edu, goudfroo@stsci.edu
T. Puzia
Affiliation:
Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canadapuziat@nrc.ca
R. Chandar
Affiliation:
Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101-1292, U.S.A. emails: rchandar@ociw.edu
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Abstract

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Our knowledge about unresolved stellar systems comes from comparing integrated-light properties to SSP models. Therefore it is crucial to calibrate the latter as well as possible by integrated-light colors of clusters that have reliable ages and metallicities (deep CMDs and/or spectroscopy of individual giants). This is especially true for the NIR and MIR, which contain important population synthesis diagnostics and are often used to derive masses of stellar systems at hight redshifts. Here we present integrated colors of MC clusters using new VRI photometry and 2MASS data. In the imminent future we will include MIR data from Spitzer/IRAC. We compare our new colors with popular SSP models to illustrate their strengths and weaknesses.

Keywords

Magellanic Cloudsgalaxies: star clustersinfrared: generaltechniques: photometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 195 - 196
Copyright
Copyright © International Astronomical Union 2007

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