122 citations · 337 across the 6 of their papers we have counts for
6 papers
The old anticentre open cluster Berkeley 32: membership and fundamental parameters
V. D'Orazi, A. Bragaglia, M. Tosi +2
We have obtained medium-low resolution spectroscopy and BVI CCD imaging of Berkeley 32, an old open cluster which lies in the anticentre direction. From the radial velocities of 48…
Precise reddening and metallicity of NGC6752 from FLAMES spectra
R. G. Gratton, A. Bragaglia, E. Carretta +5
(abridged) Accurate reddenings for Globular Clusters could be obtained by comparing the colour-temperature obtained using temperatures from reddening-free indicator (Halpha), with…
ATLAS vs. NextGen model atmospheres: a combined analysis of synthetic spectral energy distributions
E. Bertone, A. Buzzoni, M. Chavez +1
We carried out a critical appraisal of the two theoretical models, Kurucz' ATLAS9 and PHOENIX/NextGen, for stellar atmosphere synthesis. Our tests relied on the theoretical fit of…
Metal abundances of RR Lyrae stars in the bar of the Large Magellanic Cloud
R. G. Gratton, A. Bragaglia, G. Clementini +5
Metallicities ([Fe/H]) from low resolution spectroscopy obtained with the Very Large Telescope (VLT) are presented for 98 RR Lyrae and 3 short period Cepheids in the bar of the Lar…
Iron abundances from high-resolution spectroscopy of the open clusters NGC 2506, NGC 6134, and IC 4651
E. Carretta, A. Bragaglia, R. G. Gratton +1
This is the first of a series of papers devoted to derive the metallicity of old open clusters in order to study the time evolution of the chemical abundance gradient in the Galact…
Variable stars as tracers of stellar populations in Local Group galaxies: Leo I and NGC 6822
L. Baldacci, F. Matonti, L. Rizzi +5
Results are presented of a study of the variable star populations in the dwarf spheroidal galaxy Leo I and in the dwarf irregular galaxy NGC 6822, based on time series photometry o…