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Deep imaging survey of the environment of Alpha Centauri - I. Adaptive optics imaging of Alpha Cen B with VLT-NACO
Pierre Kervella, Frédéric Thévenin, Vincent Coudé Du Foresto +1
Context: Alpha Centauri is our closest stellar neighbor, at a distance of only 1.3 pc, and its two main components have spectral types comparable to the Sun. This is therefore a fa…
Cepheid distances from Interferometry
Pierre Kervella
Long baseline interferometry is now able to resolve the pulsational change of the angular diameter of a significant number of Cepheids in the solar neighborhood. This allows the ap…
The angular diameter and distance of the Cepheid Zeta Geminorum
P. Kervella, V. Coude du Foresto, G. Perrin +3
Cepheids are the primary distance indicators for extragalactic astronomy and therefore are of very high astrophysical interest. Unfortunately, they are rare stars, situated very fa…