Age Estimates of Universe: from Globular Clusters to Cosmological Models and Probes
Cosmology and Nongalactic Astrophysics
2016-12-28 v3 Astrophysics of Galaxies
Abstract
We performed the photometric analysis of M2 and M92 globular clusters in g and r bands of SLOAN photometric system. We transformed these g and r bands into BV bands of Johnson-Cousins photometric system and built the color magnitude diagram (CMD). We estimated the age, and metallicity of both the clusters, by fitting Padova isochrones of different age and metallicities onto the CMD. We studied Einstein and de Sitter model, bench mark model, the cosmological parameters by WMAP and Planck surveys. Finally, we compared estimated age of globular clusters to the ages from the cosmological models and cosmological parameters values of WMAP and Planck surveys.
Keywords
Cite
@article{arxiv.1609.02480,
title = {Age Estimates of Universe: from Globular Clusters to Cosmological Models and Probes},
author = {Hira Fatima and Muzammil Mushtaq and Syed Faisal Ur Rahman},
journal= {arXiv preprint arXiv:1609.02480},
year = {2016}
}
Comments
13 pages, 5 figures and five tables. submitted to Journal of GeoSpace Science (JOGGS)