| | |
| | |
Stat |
Members: 3667 Articles: 2'599'751 Articles rated: 2609
07 February 2025 |
|
| | | |
|
Article overview
| |
|
Age and Metallicity Estimation of Globular Clusters from Stromgren Photometry | K. Rakos
; J. Schombert
; | Date: |
8 Dec 2004 | Subject: | astro-ph | Affiliation: | UVienna) and J. Schombert (UOregon | Abstract: | We present a new technique for the determination of age and metallicity in composite stellar populations using Stromgren filters. Using principal component (PC) analysis on multi-color models, we isolate the range of values necessary to uniquely determine age and metallicity effects. The technique presented herein can only be applied to old (tau > 3 Gyrs) stellar systems composed of simple stellar populations, such as globular clusters and elliptical galaxies. Calibration using new photometry of 40 globular clusters with spectroscopic [Fe/H] values and main sequence fitted ages links the PC values to the Strömgren colors for an accuracy of 0.2 dex in metallicity and 0.5 Gyrs in age. | Source: | arXiv, astro-ph/0412178 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|