Mapping the PAHs and H2 in ρ Oph A

We present an ISOCAM-CVF map of the ρ Oph A region, covering 3' × 3'. For each 6 arcsec² pixel, we extract the spectrum from 5-15 μm. We determine the fluxes of the main PAH features by fitting Lorentzian profiles to the spectrum. The peaks of the various PAH components correspond well with the known positions of the PDRs in this vicinity. The spectrum in several pixels exhibits strong rotational lines of molecular hydrogen which can be used to derive the physical properties of the cloud. The H₂ emission traces the hot gas of the bipolar CO outflow from VLA1623.