ULLYSES and Complementary Surveys of Massive Stars in the Magellanic Clouds

TL;DR

This paper presents the ULLYSES project and complementary surveys that enable a comprehensive study of massive stars in the Magellanic Clouds, focusing on their wind properties and creating valuable spectral libraries.

Contribution

It introduces a coordinated observational effort combining UV and optical spectroscopy to study metal-poor massive stars in the Magellanic Clouds, filling a gap in existing data.

Findings

First homogeneous dataset of wind densities and velocities in metal-poor massive stars.

UV/optical spectral libraries for population synthesis models.

Extensive interstellar sight-line data towards the Magellanic Clouds.

Abstract

An overview is provided of the scientific goals of the Magellanic Cloud component of the STScI Directors Discretionary UV initiative ULLYSES, together with the complementary spectroscopic survey XShootU (VLT/Xshooter) and other ancillary datasets. Together, ULLYSES and XShootU permit the first comprehensive, homogeneous study of wind densities and velocities in metal-poor massive stars, plus UV/optical spectroscopic libraries for population synthesis models and a large number of interstellar sight-lines towards the Magellanic Clouds.