The sample of 379 extragalactic sources is presented that have mid-infrared , high resolution spectroscopy with the Spitzer Infrared Spectrograph ( IRS ) and also spectroscopy of the [ \ion C2 ] 158 \mu m line with the Herschel Photodetector Array Camera and Spectrometer ( PACS ) . The emission line profiles of [ \ion Ne2 ] 12.81 \mu m , [ \ion Ne3 ] 15.55 \mu m , and [ \ion C2 ] 158 \mu m are presented , and intrinsic line widths are determined ( full width half maximum of Gaussian profiles after instrumental correction ) . All line profiles together with overlays comparing positions of PACS and IRS observations are made available in the Cornell Atlas of Spitzer IRS Sources ( CASSIS ) . Sources are classified from AGN to starburst based on equivalent widths of the 6.2 \mu m polycyclic aromatic hydrocarbon feature . It is found that intrinsic line widths do not change among classification for [ \ion C2 ] , with median widths of 207 km s ^ { -1 } for AGN , 248 km s ^ { -1 } for composites , and 233 km s ^ { -1 } for starbursts . The [ \ion Ne2 ] line widths also do not change with classification , but [ \ion Ne3 ] lines are progressively broader from starburst to AGN . A small number of objects with unusually broad lines or unusual redshift differences in any feature are identified .