CAF\'E-BEANS: An exhaustive hunt for high-mass binaries

I. Negueruela,J. Maíz Apellániz,S. Simón-Díaz,E. J. Alfaro,A. Herrero,J. Alonso,R. H. Barbá,J. Lorenzo,A. Marco,M. Monguió,Nidia I. Morrell,Anne Pellerin,A. Sota,Nolan R. Walborn

arXiv: Solar and Stellar Astrophysics（2014）

Cited 23|Views8

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Abstract

CAF\'E-BEANS is an on-going survey running on the 2.2 m telescope at Calar Alto. For more than two years, CAF\'E-BEANS has been collecting high-resolution spectra of early-type stars with the aim of detecting and characterising spectroscopic binaries. The main goal of this project is a thorough characterisation of multiplicity in high-mass stars by detecting all spectroscopic and visual binaries in a large sample of Galactic O-type stars, and solving their orbits. Our final objective is eliminating all biases in the high-mass-star IMF created by undetected binaries.

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