ED-2: a cold but not so narrow stellar stream crossing the Solar neighbourhood

Understand

ED-2 is a stellar stream identified as a compact group in integrals of motion space in a local sample of halo stars from the third Gaia data release.

• Here we investigate its nature and possible association with known halo substructures.
• We explore the current properties of ED-2 members in phase-space, and also analyse the expected distribution via orbit integration.
• In addition, we study the metallicity of ED-2 using APOGEE DR17 and LAMOST DR8 (and re-calibrated DR3).