The radiation from stars and active galactic nuclei (AGNs) creates photodissociation regions
(PDRs) and X-ray-dominated regions (XDRs), where the chemistry or heating is dominated …

Context. The Orion Molecular Cloud is the nearest massive-star forming region. Massive
stars have profound effects on their environment due to their strong radiation fields and …

Radiative and mechanical feedback of massive stars regulates star formation and galaxy
evolution. Positive feedback triggers the creation of new stars by collecting dense shells of …

Magnetic fields permeate the interstellar medium and are important in the star formation
process. Determining the three-dimensional (3D) magnetic fields of molecular clouds will …

Context. The James Webb Space Telescope (JWST) has captured the most detailed and
sharpest infrared (IR) images ever taken of the inner region of the Orion Nebula, the nearest …

The gas-phase abundance of carbon, x C=[C/H] gas= x C++ x C 0+ x CO+…, and its
depletion factors are essential parameters for understanding the gas and solid compositions …

Hydride molecules lie at the base of interstellar chemistry, but the synthesis of sulfuretted
hydrides is poorly understood and their abundances often crudely constrained. Motivated by …

Numerical models of photodissociation regions (PDRs) are an essential tool to quantitatively
understand observations of massive star forming regions through simulations. Few mature …

Context. The interaction of expanding H II regions with their environmental clouds is one of
the central questions driving the Stratospheric Observatory for Infrared Astronomy (SOFIA) …

Context. The role of feedback in the self-regulation of star formation is a fundamental
question in astrophysics. The Orion Nebula is the nearest site of ongoing and recent …