Friday, 18 July, 1997 at 2:30pm

Andrew Harrison - MRAO

"Photodissociation Regions in NGC 253"

ABSTRACT: "Photodissociation regions (PDRs) are where UV photons, generated by young stars, interact with molecular gas. In the nuclei of starburst galaxies a significant fraction of the ISM resides in PDRs. I will discuss a detailed case study of PDRs in the nearby starburst NGC 253, concentrating on observations made with UKIRT and the JCMT. I will infer the nature of the starburst in NGC 253 by comparing the results from the Mauna Kea telescopes with observations made at far-IR and radio wavelengths."