77 citations · 387 across the 14 of their papers we have counts for
5 papers · 1 filter
Metal abundances of RR Lyrae stars in the metal rich globular cluster NGC 6441
G. Clementini, R. G. Gratton, A. Bragaglia +4
Low resolution spectra have been used to measure individual metal abundances of RR Lyrae stars in NGC 6441, a Galactic globular cluster known to have very unusual horizontal branch…
The stellar populations of local dwarfs
Enrico V. Held
Recent progress in our knowledge of stellar populations in local dwarf spheroidal galaxies is briefly discussed. A few results are summarized including wide field observations of s…
The metal abundance distribution of the oldest stellar component in the Sculptor dwarf spheroidal galaxy
G. Clementini, V. Ripepi, A. Bragaglia +3
(abridged): Low resolution spectroscopy obtained with FORS2 at the Very Large Telescope (VLT) has been used to measure individual metal abundances ([Fe/H]) for 107 RR Lyrae stars,…
HST/ACS observations of the old and metal-poor Sagittarius dwarf irregular galaxy
Y. Momany, E. V. Held, I. Saviane +6
We have obtained deep color-magnitude diagrams of the Sagittarius dwarf irregular galaxy with the HST/ACS. The new diagrams unveil for the first time the star formation history of…
The near-IR luminosity-metallicity relation of dwarf irregular galaxies
Ivo Saviane, Enrico V. Held, Valentin Ivanov +5
We report on the recent developments of our long-term investigation of the near-IR luminosity-metallicity relation for dwarf irregular galaxies in nearby groups. A very well-define…