136 citations · 797 across the 11 of their papers we have counts for
11 papers
The massive star binary fraction in young open clusters - III. IC 2944 and the Cen OB2 association
H. Sana, G. James, E. Gosset
Using an extended set of multi-epoch high-resolution high signal-to-noise ratio optical spectra, we readdress the multiplicity properties of the O-type stars in IC 2944 and in the…
Optical atmospheric extinction over Cerro Paranal
F. Patat, S. Moehler, K. O'Brien +14
Aims: The present study was conducted to determine the optical extinction curve for Cerro Paranal under typical clear-sky observing conditions, with an accuracy of 0.01 mag/airmass…
A MAD view of Trumpler 14
H. Sana, Y. Momany, M. Gieles +5
We present adaptive optics (AO) near-infrared observations of the core of the Tr 14 cluster in the Carina region obtained with the ESO multi-conjugate AO demonstrator, MAD. Our cam…
Elemental abundances in the Galactic bulge from microlensed dwarf stars
T. Bensby, S. Feltzing, J. A. Johnson +11
We present elemental abundances of 13 microlensed dwarf and subgiant stars in the Galactic bulge, which constitute the largest sample to date. We show that these stars span the ful…
Variations in the lithium abundances of turn off stars in the globular cluster 47 Tuc
Piercarlo Bonifacio, Luca Pasquini, Paolo Molaro +7
aims: Our aim is to determine Li abundances in TO stars of the Globular Cluster 47 Tuc and test theories about Li variations among TO stars. method: We make use of high resolution…
Na-O Anticorrelation and Horizontal Branches. V. The Na-O anticorrelation in NGC 6441 from Giraffe spectra
R. G. Gratton, S. Lucatello, A. Bragaglia +16
We present an analysis of FLAMES-Giraffe spectra for several bright giants in NGC 6441, to investigate the presence and extent of the Na-O anticorrelation in this anomalous globula…