JWST View of the Supernebula in NGC 5253. II. Nebular Lines
The study analyzed JWST emission lines from NGC 5253 to characterize its starburst and the effect of its central cluster D1. Researchers found that despite high extinction, UV photons escape D1 due to a clumpy structure. Mid-infrared lines are major contributors to cooling, and the high excitation suggests very massive stars in a young population.