Lines of research: The Milky Way and the Local Group (MWLG)
The Milky Way and the Local Group (MWLG)
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Solving the enigma of the brightest planetary nebulae
Planetary nebulae (PNe) are the ejecta of evolved low-intermediate mass stars present in all stellar systems. Perhaps the easiest thing to do when studying PNe...
Solving the longstanding mistery of the blue massive supergiants
Massive stars are key astronomical objects for the study of the Universe through spaceand time. Ensuring reliable knowledge about the physical properties...
Space astrometry of the very massive ˜150 M⊙ candidate runaway star VFTS682
How very massive stars form is still an open question in astrophysics. VFTS682 is among the most massive stars known, with an inferred initial mass of ≳150 M_⊙...
Spatial dependence of the star formation history in the central regions of the Fornax dwarf spheroidal galaxy
We present the star formation history (SFH) and the age-metallicity relation (AMR) in three fields of the Fornax dwarf spheroidal galaxy. They sample a region...
Spatial variations in the Milky Way disc metallicity-age relation
Stellar ages are a crucial component to studying the evolution of the Milky Way. Using Gaia DR2 distance estimates, it is now possible to estimate stellar ages...
Spatially resolved LMC star formation history - I. Outside in evolution of the outer LMC disc
We study the evolution of three fields in the outer Large Magellanic Cloud (LMC) disc (Rgc = 3.5-6.2 kpc). Their star formation history indicates a stellar...
Spatially resolved near-infrared spectroscopy of the massive star-forming region IRAS 19410+2336
Aims: IRAS 19410+2336 is a young massive star forming region with an intense outflow activity. Outflows are frequently studied in the near-infrared (NIR) since...
Spectral analysis of the barium central star of the planetary nebula Hen 2-39
Context. Barium stars are peculiar red giants characterized by an overabundance of the elements synthesized in the slow neutron-capture nucleosynthesis (s...
Spectral Classification of B Stars: The Empirical Sequence Using SDSS-IV/APOGEE Near-IR Data
We present a semi-empirical spectral classification scheme for normal B-type stars using near-infrared (NIR) spectra (1.5-1.7 μm) from the Sloan Digital Sky...