Dr Holger Baumgardt
Dr. Holger Baumgardt is an astronomer interested in the dynamical evolution of star clusters, galactic nuclei and galaxies. He joined the University of Queensland in 2010 as an ARC Future Fellow.
|Do massive stars form in isolation ?||
While most O and B type stars are found in either bound star clusters or loose groups, about 25 per cent of O stars in the Milky Way are observed in isolation. Isolated O stars could have also formed in isolation, however in this case our theories of star formation would need to be substantially...
|The Nature of the brightest X-ray sources||
Ultra-luminous X-ray sources (ULX) are a new class of X-ray source discovered a few years ago in surveys of nearby galaxies. Their brightness is too large to come from ordinary black holes or neutron stars, however ULX are normally found away from the centres of galaxies, also ruling out...
|Probing star formation in nearby young OB associations||
Star formation is the process by which stars form out of interstellar gas clouds. Although important for astronomy, we still have only an incomplete understanding of star formation because it happens at the centers of heavily obscured dust clouds. One can however look at the results of star...