Determine the origin of the Sco–Cen X-ray population

Determine the origin of the X-ray-detected young-star population surrounding clusters in Sco–Cen.

Background

The paper discusses young stars surrounding cataloged clusters that are identified through X-ray emission but are not necessarily included in conventional cluster memberships. Such populations may represent extended or departed cluster members, although contamination and alternative origins remain possible. The authors explicitly identify the origin of the corresponding Sco–Cen population as unresolved.

References

A corresponding population has been detected in X-rays in Sco--Cen whose origin remains uncertain.

— The dispersal law of young star clusters: free expansion -- A Gaia/eROSITA census of Orion and Sco--Cen  (2609.05179 - Alves et al., 4 Sep 2026) in Section 1, Introduction