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Normal and Outlying Populations of the Milky Way Stellar Halo at [Fe/H] < -2
Judith Cohen, Norbert Christlieb, Ian Thompson +5
From detailed abundance analysis of >100 Hamburg/ESO candidate extremely metal-poor (EMP) stars we find 45 with [Fe/H] < -3.0 dex. We identify a heretofore unidentified group: Ca-d…
Two planetary companions around the K7 dwarf GJ 221 : a hot super-Earth and a candidate in the sub-Saturn desert range
Pamela Arriagada, Guillem Anglada-Escudé, R. Paul Butler +5
We report two low mass companions orbiting the nearby K7 dwarf GJ 221 that have emerged from re-analyzing 4.4 years of publicly available HARPS spectra complemented with 2 years of…
The cluster ages experiment (CASE). V. Analysis of three eclipsing binaries in the globular cluster M4
J. Kaluzny, I. B. Thompson, M. Rozyczka +6
We use photometric and spectroscopic observations of the eclipsing binaries V65, V66 and V69 in the field of the globular cluster M4 to derive masses, radii, and luminosities of th…