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astro-ph2005
The Proper Motion of the Magellanic Clouds: The UCAC2-Hipparcos Inconsistency
Y. Momany, S. Zaggia
Using the USNO CCD Astrograph all-sky Catalog (UCAC2), we measure the mean proper motion of the two Magellanic Clouds. Appropriately selected LMC populations show a proper motion (…
astro-ph2003
Abundances for metal-poor stars with accurate parallaxes II. alpha-elements in the halo
Raffaele Gratton, Eugenio Carretta, Silvano Desidera +3
Abundances for alpha-elements and Fe in about 150 field subdwarfs and early subgiants with accurate parallaxes and kinematic data are used to discuss the run of abundance ratios in…
astro-ph2003
Abundances for metal-poor stars with accurate parallaxes I. Basic data
Raffaele Gratton, Eugenio Carretta, Riccardo Claudi +2
We present element-to-element abundance ratios measured from high dispersion spectra for 150 field subdwarfs and early subgiants with accurate Hipparcos parallaxes (errors <20%). F…