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The Astrochemistry of Molecular Anions, from AGB Stars to Dark Clouds

Wednesday, May 13, 2009 - 4:00pm

National Radio Astronomy Observatory, Charlottesville


Martin A. Cordiner

Astrochemistry Research Fellow

NASA Goddard Space Flight Center

Greenbelt, Maryland 20771





The recent discovery of large molecular anions in space represents an important development in our knowledge of astrochemistry. In my talk, I will briefly review the observational evidence for molecular anions in space and will discuss their important effects on the physics and chemistry of interstellar and circumstellar environments and star-forming regions. I will focus attention on my new chemical model for the AGB star IRC+10216.




Martin A. Cordiner is a Research Fellow in Molecular Astrophysics at Queen's University in Belfast, Northern Ireland. He received his Ph.D. in Chemistry from the University of Nottingham, United Kingdom in 2006. Dr. Cordiner's research is concerned with understanding the physics and chemistry of the interstellar medium, in particular to identify the chemical species responsible for the diffuse interstellar bands (DIBs). Specific interests include: the chemistry of the diffuse ISM, dense molecular clouds, circumstellar envelopes and photon-dominated regions; optical (high resolution) absorption spectroscopy of the diffuse ISM; radio studies of interstellar molecules; the chemistry and physics of interstellar anions; organic anions as possible DIB carriers; PAHs and related large molecules as possible DIB carriers; the structure and composition of interstellar dust; UV extinction studies and the carriers of the UV extinction curve; optical stellar spectroscopy, with emphasis on early-type stars; small-scale structure of the ISM; and extragalactic ISM studies, with emphasis on optical absorption spectroscopy and DIBs.