3 papers
astro-ph2005
Elemental Abundance Ratios in Stars of the Outer Galactic Disk. III. Cepheids
David Yong, Bruce W. Carney, Luisa de Almeida +1
We present metallicities, [Fe/H], and elemental abundance ratios, [X/Fe], for a sample of 24 Cepheids in the outer Galactic disk. The sample have Galactocentric distances covering…
astro-ph2005
Elemental Abundance Ratios in Stars of the Outer Galactic Disk. II. Field Red Giants
Bruce W. Carney, David Yong, Luisa de Almeida +1
We summarize a selection process to identify red giants in the direction of the southern warp of the Galactic disk, employing VI_C photometry and multi-object spectroscopy. We also…
astro-ph2005
Elemental Abundance Ratios in Stars of the Outer Galactic Disk. I. Open Clusters
David Yong, Bruce W. Carney, Luisa de Almeida
We summarize radial velocity studies of selected stars in the old, distant clusters Berkeley 20, Berkeley 21, NGC 2141, Berkeley 29, and Berkeley 31. Three members of M67 were obse…