5 papers
Hypersonic Molecular Shocks in Star Forming Regions
Peter W. J. L. Brand
Much emission from star forming regions is from shock-excited gas. Shocks in molecular clouds are still not fully understood, as magnetic fields, dust and chemistry all play signif…
Radiative feedback from an early X-ray background
Simon C. O. Glover, Peter W. J. L. Brand
The first generation of stars (commonly known as population III) are expected to form in low-mass protogalaxies in which molecular hydrogen is the dominant coolant. Radiation from…
Formation Pumping of Molecular Hydrogen in the Messier 17 Photodissociation Region
M. G. Burton, D. Londish, P. W. J. L. Brand
We have imaged the emission from the near-infrared v=1-0 S(1), 1-0 S(7), 2-1 S(1) and 6-4 O(3) lines of molecular hydrogen in the N- and SW-Bars of M17, together with the hydrogen…
On the photodissociation of H2 by the first stars
Simon C. O. Glover, Peter W. J. L. Brand
The first star formation in the universe is expected to take place within small protogalaxies, in which the gas is cooled by molecular hydrogen. However, if massive stars form with…
Shocked H2 and Fe+ Dynamics in the Orion Bullets
Jonathan A. Tedds, Peter W. J. L. Brand, Michael G. Burton
Observations of H2 velocity profiles in the two most clearly defined Orion bullets are extremely difficult to reconcile with existing steady-state shock models. We have observed [F…