I will review some of planned science cases relevant to studies of stellar structure and evolution with 4MOST. In particular, I will focus on the questions that highlight the spectroscopic capabilities of the 4MOST high-resolution spectrograph and capitalise on synergies with Gaia and time-domain photometry missions. The topics that I will address include fundamental stellar parameters,...
The Multi Object Optical and Near-infrared Spectrograph (MOONS) instrument is the next generation multi-object spectrograph for the VLT. This powerful instrument will combine for the first time the large collecting power of the VLT with a high multiplexing capability offered by 1000 optical fibres moved with individual robotic positioners and a novel, very fast spectrograph able to provide...
In this contribution I introduce current work and future perspectives for the upcoming WEAVE high-resolution survey in the Cygnus-X complex. WEAVE, the next multi-object spectrograph at the 4.2m William Herschel Telescope, will provide high-quality spectra over the coming years for thousands of massive stars in the northern Galactic plane and, specifically, in several rich Cygnus OB...