Cosmic-ray energy densities in star-forming galaxies

X-ray emission from star-forming galaxies

Gamma-ray bursts in normal and extreme star-forming galaxies

We discuss how gamma-ray burst (GRB) optical afterglows and multiwavelength observations of their host galaxies can be used to obtain information about the relative amounts of star formation happening in optical and submillimetre galaxies. That such an analysis will be possible follows from the currently-favoured idea that GRBs are closely linked with high-mass star formation. Studying GRB host...

Star-forming Dwarf Galaxies: Ariadne’s Thread in the Cosmic Labyrinth Stellar kinematics in blue compact galaxies

In a programme of observations of local luminous blue compact galaxies (BCGs) we are investigating kinematics by using tracers of both stars and ionised gas. Here we summarise our program and present new data on the local Lyman break galaxy analogue Haro 11. From spatially-resolved spectroscopy around the near-infrared Ca ii triplet, we find that its stars and ionised gas have similar velocity ...

Title: Cosmic-ray Injection from Star-forming Regions

At present, all physical models of diffuse Galactic gamma-ray emission assume that the distribution of cosmic-ray sources traces the observed populations of either OB stars, pulsars, or supernova remnants. However, since H2-rich regions host significant star formation and numerous supernova remnants, the morphology of observed H2 gas should also provide a physically motivated, high-resolution t...

Star-forming Complexes in Galaxies

Star complexes are the largest globular regions of star formation in galaxies. If there is a spiral density wave, nuclear ring, tidal arm, or other welldefined stellar structure, then gravitational instabilities in the gaseous component produce giant cloud complexes with a spacing of about three times the width. These gas complexes form star complexes, giving the familiar beads on a string of s...