Massive Stars: Some open questions and the role of Multi-object spectroscopy

TL;DR

This paper discusses the unresolved questions about massive stars and emphasizes the importance of multi-object spectroscopy in studying large samples to improve our understanding of their role in cosmic evolution.

Contribution

It highlights the significance of multi-object spectroscopy for addressing key uncertainties in massive star research through large-scale observations.

Findings

Multi-object spectroscopy is essential for studying massive stars.

Large samples are needed to resolve open questions.

Understanding massive stars impacts broader cosmic evolution models.

Abstract

Massive stars are key ingredients in the evolution of the Universe. Yet, important uncertainties and limits persist in our understanding of these objects, even in their early phases, limiting their application as tools to interpret the Universe. Here we review some of these open questions and argue that large samples are needed to answer them, both in the Milky Way and nearby galaxies. Multiobject spectroscopy plays a crucial role in this process.