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The observation of the Sun with a pinhole in order to check the first and the second Kepler's law has been realized for high school students. The settling of the experiment in order to minimize the er...
An optical/NIR survey of globular clusters in early-type galaxies. I. Introduction and data reduction procedures
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical colours alone.