text: 421,110,1304207633868402688,29251447,Tuan Do,"Where did the millions of stars at the Galactic center come from? In a new paper, we find evidence that some of the stars probably came from a globular cluster or dwarf galaxy that fell in and got trapped.  1/3 <LINK> How do we know this? We find that stars with low metal abundance move differently around the black hole than the stars with more metals! It is very unusual if they formed in the same place, but could be explained if the stars fell in. <LINK> In a companion paper, my theory colleagues used computer simulations throwing star clusters and small galaxies into the center of our galaxy to explore this process. The simulations show that this infall might have happened over 3 billion years ago.  <LINK> @ProfAnnikaPeter It was fun to be able to do some dynamical modeling again!",https://arxiv.org/abs/2009.02335,"The Milky Way nuclear star cluster (MW NSC) has been used as a template to understand the origin and evolution of galactic nuclei and the interaction of nuclear star clusters with supermassive black holes. It is the only nuclear star cluster with a supermassive black hole where we can resolve individual stars to measure their kinematics and metal abundance to reconstruct its formation history. Here, we present results of the first chemo-dynamical model of the inner 1 pc of the MW NSC using metallicity and radial velocity data from the KMOS spectrograph on the Very Large Telescope. We find evidence for two kinematically and chemically distinct components in this region. The majority of the stars belong to a previously known super-solar metallicity component with a rotation axis perpendicular to the Galactic plane. However, we identify a new kinematically distinct sub-solar metallicity component which contains about 7\% of the stars and appears to be rotating faster than the main component with a rotation axis that may be misaligned. This second component may be evidence for an infalling star cluster or remnants of a dwarf galaxy, merging with the MW NSC. These measurements show that the combination of chemical abundances with kinematics is a promising method to directly study the MW NSC's origin and evolution. ","Revealing the Formation of the Milky Way Nuclear Star Cluster via