Spiral arms, warping, and clumps formation in the Galactic center young stellar disk

Understand

The Galactic center of the Milky-Way harbors a massive black hole (BH) orbited by a diverse population of young and old stars.

• A significant fraction of the youngest stars ($\sim4-7$ Myr) reside in a thin stellar disk with puzzling properties; the disk appears to be warped, shows asymmetries, and contains one or more clumpy structures (e.g.
• IRS 13).
• Models explaining the clumping invoked the existence of an intermediate-mass BH of $10^{3}-10^{4}$ M$_{\odot}$, but no kinematic evidence for such a BH has been found.