Context. The kinematics of planetary nebulae in external galaxies and in our own is a clue for understanding the behavior of the low- and intermediate-mass...
Kinematics of the Local Group gas and galaxies in the HESTIA simulations
We investigate the kinematic properties of gas and galaxies in the Local Group (LG) using high-resolution simulations performed by the HESTIA (High-resolution...
Looking for the traces of the early Universe in the Fornax dSph galaxy
We present the full Star Formation History as a function of radius of the Fornax dSph galaxy. We also present the preliminary results of the spatial...
Preliminary results of a candidate luminous blue variable (LBV) search made in a region of M33 are presented. The objects were found with narrow band filter...
Luminous Red Stars in Local Group Dwarf Elliptical Galaxies: an Intermediate-Age Population?
In this Letter, we show that the optically bright stars above the tip of the first red giant branch (TRGB) in the color-magnitude diagrams (CMDs) of nearby...
Mass-metallicity relation of dwarf galaxies and its dependency on time: clues from resolved systems and comparison with massive galaxies
Aims: We present a new approach to study the mass-metallicity relation and its dependency on time. Methods: We used the star formation history (SFH) derived...
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...