Massive stars play a key role in environments with very different metallicities. To interpret the role of massive stars in these systems we have to know their...
Merger traces in the spatial distribution of stellar populations in the Fornax dSph galaxy
We present a comprehensive and detailed study of the stellar populations of the Fornax dwarf spheroidal galaxy. We analyse their spatial distributions along the...
Microlensing toward Crowded Fields: Theory and Applications to M31
We present a comprehensive treatment of the pixel-lensing theory and apply it to lensing experiments and their results toward M31. Using distribution functions...
Model Color-Magnitude Diagrams for Hubble Space Telescope Observations of Local Group Dwarf Galaxies
In this Letter, we discuss a method to conduct a quantitative study of the star formation history (SFH) of Local Group (LG) galaxies using Hubble Space...
Nature of a shell of young stars in the outskirts of the Small Magellanic Cloud
Context. Understanding the evolutionary history of the Magellanic Clouds requires an in-depth exploration and characterization of the stellar content in their...
No sign (yet) of intergalactic globular clusters in the Local Group
We present Gemini Multi-Object Spectrograph (GMOS) imaging of 12 candidate intergalactic globular clusters (IGCs) in the Local Group, identified in a recent...
The Astrophysics Research Institute (ARI) was established at LJMU in 1992. Today the Institute comprises around 70 staff and research students working on topics...
Nucleosynthesis and the Inhomogeneous Chemical Evolution of the Carina Dwarf Galaxy
The detailed abundances of 23 chemical elements in nine bright red giant branch stars in the Carina dwarf spheroidal galaxy are presented based on high...
Observational Discovery of the Asymptotic Giant Branch Bump in Densely Populated Color-Magnitude Diagrams of Galaxies and Star Clusters
The huge photometric databases that are being created for stars in the Magellanic Clouds and in Local Group galaxies not only allow a detailed study of the star...