text: 332,39,1442522254051405829,1116002690604130305,Juliette Becker,"New on arXiv last night (and accepted to AJ last week): undergraduate Lucas Brefka’s first first-author paper: <LINK> In this paper, he studied how multi-planet systems change as their stars evolve and secular resonances sweep through the systems. In this work started as part of the @UROPumich program, he used a combination of secular theory and numerical simulations to show that for systems with ultra-short-period planets and extra outer planets, this dynamical process can recreate the observed geometry of the system. Lucas went from first-day @UROPumich freshman to published author in less than two years. Lucas is applying to grad school this fall, even though he is only a third-year undergrad (graduating a year early). If you’re looking for grad students this fall, watch for his application!",https://arxiv.org/abs/2109.12054,"Ultra-short period (USP) planets are exoplanets which have orbital periods of less than one day and are unique because they orbit inside the nominal magnetic truncation gap of their host stars. In some cases, USP planets have also been observed to exhibit unique dynamical parameters such as significant misalignments in inclination angle with respect to nearby planets. In this paper, we explore how the geometry of a multi-planet system hosting a USP planet can be expected to evolve as a star ages. In particular, we explore the relationship between the mutual inclination of the USP planet and the quadrupole moment ($J_2$) of the host star. We use secular perturbation theory to predict the past evolution of the example TOI-125 system, and then confirm the validity of our results using long-term N-body simulations. Through investigating how the misalignment between the candidate USP planet and the three other short-period planets in the TOI-125 system arose, we intend to derive a better understanding of the population of systems with misaligned USP planets and how their observed parameters can be explained in the context of their dynamical histories. ","A General Origin for Multi-Planetary Systems With Significantly