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On the nature of the extragalactic number counts in the K-band
G. Barro, J. Gallego, P. G. Pérez-González +10
We investigate the causes of the different shape of the -band number counts when compared to other bands, analyzing in detail the presence of a change in the slope around $K\sim…
Kinematic Properties and Stellar Populations of Faint Early-Type Galaxies: II. Line-Strength Measurements of Central Coma Galaxies
Ana Matkovic, Rafael Guzman, Patricia Sanchez-Blazquez +3
We present line-strength measurements for 74 early-type galaxies in the core of the Coma cluster reaching down to velocity dispersions, sigma, of 30 km/s. The index-sigma relations…
A new stellar library in the region of the CO index at 2.3 m. New index definition and empirical fitting functions
E. Mármol-Queraltó, N. Cardiel, A. J. Cenarro +5
Context: The analysis of unresolved stellar populations demands evolutionary synthesis models with realistic physical ingredients and extended wavelength coverage. Aims: To obtain…