Tuesday, 19th July at 2.00pm @ the JAC

ABSTRACT: The spectral line survey towards the starburst galaxy NGC 253, covering most of the 2 mm atmospheric band from 129.1 to 175.2 GHz, shows 111 spectral features from 25 different molecular species. Among them, 8 species are detected for the first time in the extragalactic interstellar medium. This observations provide us with a more complete chemical description of this source. The chemical complexity of the nuclear environment of NGC 253 is compared with that of chemistry prototypical sources within the Galaxy as well as selected nearby galaxies. This comparison shows up the chemical differentiation among nuclei of galaxies gives us insights on the heating mechanism driving their chemistry. Future of the extragalactic chemistry with the advent of new generation telescopes will be discussed.