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| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidad Nacional Autónoma de México
2007
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| Accès en ligne: | https://www.redalyc.org/articulo.oa?id=57102913 |
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Table des matières:
- Surface-brightness fluctuations in stellar populations A. Marín-Franch A. Aparicio Física, Astronomía y Matemáticas CD GALAXIES: STELLAR CONTENT GALAXIES: FUNDAMENTAL PARAMETERS GALAXIES: ELLIPTICAL AND LENTICULAR A new theoretical calibration of surface-brightness fluctuations (SBF) for single age, single metallicity stellarpopulations is presented for the optical and near-IR broad-band filters, as well as for the HST WFPC2 filters.The IAC-star code is used together with two Padua and the Teramo stellar evolution libraries. A set of single-burst stellar populations with a wide range of ages (3Gy-15Gy) and metallicities (Z=0.0001-0.03) have beencomputed.The present theoretical calibration shows that the analysis of near-IR SBF provides a very powerfultool in the study and characterization of unresolved stellar populations. This, together with the high spatialresolution, limiting magnitude and image quality of CIRCE@GTC, makes this unique to study and characterizethe age and metallicity of unresolved early type stellar populations. 2007 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57102913 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.29