JWST observations of cosmic-ray-excited H${}_2$ in Barnard 68: spatial variations and constraints on cosmic-ray attenuation

David A. Neufeld, Kedron Silsbee, Alexei V. Ivlev +9

We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 that reveal the spatially-resolved signature of cosmic-ray excited molecular…