Free Access
Section Catalogs and data
DOI https://doi.org/10.1051/0004-6361/201935359

MONOS: Multiplicity Of Northern O-type Spectroscopic systems. I. Project description and spectral classifications and visual multiplicity of previously known objects

A&A, Forthcoming article
Received: 25 February 2019 / Accepted: 25 April 2019
DOI: https://doi.org/10.1051/0004-6361/201935359