Probing the low-mass end of the companion mass function for O-type stars

  title={Probing the low-mass end of the companion mass function for O-type stars},
  author={Maddalena Reggiani and Alan Rainot and Hugues Sana and Leonardo A. Almeida and Saida M. Caballero-Nieves and Kaitlin M. Kratter and Sylvestre Lacour and Jean-Baptiste LeBouquin and Hans Zinnecker},
  journal={Astronomy \& Astrophysics},
Context. Past observations of O-type stars in the Galaxy have shown that almost all massive stars are part of a binary or higher-order multiple system. Given the wide range of separations at which these companions are found, several observational techniques have been adopted to characterize them. Despite the recent advancements in interferometric and adaptive optics observations, contrasts greater than 4 in the H band have never been reached between 100 and 1000mas. Using new adaptive optics… 

Empirical stability boundary for hierarchical triples

Abstract The three-body problem is famously chaotic, with no closed-form analytical solutions. However, hierarchical systems of three or more bodies can be stable over indefinite timescales. A system



Union’s Horizon 2020 research program (grant agreement No. 772225, MULTIPLES) and under the European Union’s Seventh Framework Program (ERC Grant Agreement n. 337569)

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