Lines of research: The Milky Way and the Local Group (MWLG)
The Milky Way and the Local Group (MWLG)
Publication
The initial mass function of a massive relic galaxy
Massive relic galaxies formed the bulk of their stellar component before z ˜ 2 and have remained unaltered since then. Therefore, they represent a unique...
The intense production of silicates during the final AGB phases of intermediate mass stars
Context. The formation of silicates in circumstellar envelopes of stars evolving through the asymptotic giant branch (AGB) is still highly debated given the...
The Interaction of Asymptotic Giant Branch Stars with the Interstellar Medium
We study the hydrodynamical behavior of the gas expelled by moving asymptotic giant branch stars interacting with the interstellar medium (ISM). Our models...
The interaction of the halo around the butterfly planetary nebula NGC 650-1 with the interstellar medium
With its bright and wide equatorial waist seen almost edge-on (`the butterfly body') and the faint and broad bipolar extensions (`the butterfly wings'), NGC 650...
The Intergalactic Stellar Population from Mergers of Elliptical Galaxies with Dark Matter Halos
We present simulations of dry-merger encounters between pairs of elliptical galaxies with dark matter halos. The aim of these simulations is to study the...
The Internal Proper Motion Kinematics of NGC 346: Past Formation and Future Evolution
We investigate the internal kinematics of the young star-forming region NGC 346 in the Small Magellanic Cloud (SMC). We used two epochs of deep F555W and F814W...
The intriguing H I gas in NGC 5253: an infall of a diffuse, low-metallicity H I cloud?
We present new, deep H I line and 20-cm radio-continuum data of the very puzzling blue compact dwarf galaxy NGC 5253, obtained with the Australia Telescope...
The Intriguing Stellar Populations in the Globular Clusters NGC 6388 and NGC 6441
NGC 6388 and NGC 6441 are two massive Galactic bulge globular clusters that share many properties, including the presence of an extended horizontal branch (HB)...
The ionised and molecular mass of post-common-envelope planetary nebulae. The missing mass problem
Context. Most planetary nebulae (PNe) show beautiful, axisymmetric morphologies despite their progenitor stars being essentially spherical. Close binarity is...