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astro-ph2008
Sunyaev-Zel'dovich Effect Observations of the Bullet Cluster (1E 0657-56) with APEX-SZ
N. W. Halverson, T. Lanting, P. A. R. Ade +33
We present observations of the Sunyaev-Zel'dovich effect (SZE) in the Bullet cluster (1E 0657--56) using the APEX-SZ instrument at 150 GHz with a resolution of 1 arcmin. The main r…
astro-ph2007★ 171 cited
Evolved stars hint to an external origin of enhanced metallicity in planet-hosting stars
L. Pasquini, M. P. Doellinger, A. Weiss +5
Exo-planets are preferentially found around high metallicity main sequence stars. We aim at investigating whether evolved stars share this property, and what this tells about plane…
astro-ph1999
Evolution of low-mass metal-free stars including effects of diffusion and external pollution
A. Weiss, S. Cassisi, H. Schlattl +1
We investigate the evolution of low-mass metal-free Population III stars. Emphasis is laid upon the question of internal and external sources for CNO-elements, which - if present i…