I'm a Professor within the Astrophysics group and the Director of Learning and Teaching for the Department of Physics and Astronomy at the University of Sheffield.

My primary research interests involve studies of Massive Stars in the Milky Way and other star-forming galaxies, for which I have co-authored 130+ refereed papers, including an Annual Review article on the Properties of Wolf-Rayet stars and co-authored a monograph From Luminous Hot Stars to Starburst Galaxies, published in the Cambridge Astrophysics Series. I have written about the Birth, Life and Death of Massive Stars for Astronomy & Geophysics from the 2012 IAU GA.

The above image shows the LMC giant star forming region, the Tarantula Nebula, and its dominant ionizing star cluster R136. The brightest sources in R136 were the focus of a study that I led a study which resulted in a Stars just got bigger Press Release from ESO in July 2010 (see FAQ and Deep Sky Videos film). Current research activities involve a HST/STIS spectroscopic study of the R136 cluster, an ESO Large Programme VLT/FLAMES Tarantula Survey, plus a deep Chandra X-ray study entitled Tarantula - Revealed by X-rays (T-ReX).

I also teach astrophysics modules on Stellar Atmospheres (PHY305), Stellar Evolution (PHY404) and the ISM (PHY232). Undergraduate 3rd and 4th year projects are closely related to my research interests, e.g. Wolf-Rayet database assembled by two M.Phys students.

I'm involved in a variety of outreach activities, including the Deep Sky Videos channel plus I've co-organised a Festival of the Mind event in September 2014 with Stewart Campbell - Sounds of the Cosmos