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Globular Cluster Evolution in M87 and Fundamental Plane Ellipticals
M87 Fundamental Plane Ellipticals
2014/12/23
The globular cluster population in M87 has decreased measurably through dynamical evolution caused by relaxation, binary heating and time-dependent tidal perturbation. For fundamental plane elliptical...
Constraining the expansion rate of the Universe using low-redshift ellipticals as cosmic chronometers
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We present a new methodology to determine the expansion history of the Universe analyzing the spectral properties of early type galaxies (ETG). We found that for these galaxies the 4000\AA break is a ...
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals
GOYA survey Optical IR galaxy
2009/7/1
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals。
The formation epoch of ellipticals and other red-sequence galaxies
formation epoch red-sequence galaxies ellipticals
2009/6/30
The formation epoch of ellipticals and other red-sequence galaxies。