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7 papers · 2 filters
Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. V. Evidence for a wide age distribution and a complex MDF
T. Bensby, J. C. Yee, S. Feltzing +20
Based on high-resolution spectra obtained during gravitational microlensing events we present a detailed elemental abundance analysis of 32 dwarf and subgiant stars in the Galactic…
An upper limit to the velocity dispersion of relaxed stellar systems without massive black holes
M. Coleman Miller, Melvyn B. Davies
Massive black holes have been discovered in all closely examined galaxies with high velocity dispersion. The case is not as clear for lower-dispersion systems such as low-mass gala…
Investigating stellar-mass black hole kicks
Serena Repetto, Melvyn B. Davies, Steinn Sigurdsson
We investigate whether stellar-mass black holes have to receive natal kicks in order to explain the observed distribution of low-mass X-ray binaries containing black holes within o…
Signatures of an intermediate-age metal-rich bulge population
T. Bensby, S. Feltzing, A. Gould +8
We have determined detailed elemental abundances and stellar ages for a sample of now 38 microlensed dwarf and subgiant stars in the Galactic bulge. Stars with sub-solar metallicit…
Chemical evolution of the Galactic disk(s)
T. Bensby, S. Feltzing
We highlight some results from our high-resolution spectroscopic elemental abundance survey of F and G dwarf stars in the solar neighbourhood.
Abundance trends in the inner and outer Galactic disk
T. Bensby, A. Alves-Brito, M. S. Oey +2
Based on high-resolution spectra obtained with the MIKE spectrograph on the Magellan telescopes we present detailed elemental abundances for 64 red giant stars in the inner and out…