NICS-TNG infrared spectroscopy of NGC 1068: The first extragalactic measurement of [ P$ $II] and a new tool to constrain the origin of [ Fe$ $II] line emission in galaxies

NICS-TNG infrared spectroscopy of NGC 1068: The first extragalactic measurement of [ P$ $II] and a new tool to constrain the origin of [ Fe$ $II] line emission in galaxies