Faint Galactic Halos

A team of astronomers led by UC Santa Barbara Professor Crystal Martin and graduate student Stephanie Ho released a paper investigating how these halos interact with the rest of their galaxies. As quasar light travels through these galactic halos, the dust and gas absorb specific wavelengths of light based on its composition. The research team pieced together the distribution and composition of this missing matter by comparing the light spectra from these shrouded quasars to those they can see directly.