TVIW updates 10/01
Here are the notable interstellar updates for October 1. You can see the entire list each weekday at https://tviw.us/interstellar-updates/. (Just a bit of advice...if you see a paper that looks interesting to you but is behind a paywall at the website listed, try searching for the title of the paper on https://arxiv.org, where may papers are available as preprints of the final published version.)
Exoplanet characterisation in the longest known resonant chain: the K2-138 system seen by HARPS
https://arxiv.org/abs/1909.13527
An examination of the effect of the TESS extended mission on southern hemisphere monotransits