Ortwin Gerhard

TL;DR: Diffuse intracluster light (ICL) has now been observed in nearby and in intermediate redshift clusters as mentioned in this paper, which can be used to constrain some aspects of cosmological simulations that are most uncertain, such as the modeling of star formation and the mass distribution of the baryonic component in galaxies.

TL;DR: In this article, the authors identify planetary nebulae in six major inner-halo substructures: the Giant Stream, North East Shelf, G1 Clump, Northern Clump and Stream D, and obtain their PNLFs and those in two disc annuli, with galactocentric radii of R GC = 10-20 kpc and R GC= 20-30 kpc.

TL;DR: In this article, the authors derived stellar line-of-sight velocity distributions from the stellar absorption lines, as well as velocity distributions and line fluxes of the emission lines H beta, [O III] and [N I].

TL;DR: In this article, the authors measured the radial velocities of gas traced by 26Al, averaged over the line of sight, as a function of Galactic longitude, and compared these to Doppler shift expectations from large-scale systematic rotation around the Galaxy's center, as observed in other Galactic objects.