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Parent Stars of Extrasolar Planets. VI. Abundance Analyses of 20 New Systems
The results of new spectroscopic analyses of 20 recently reported extrasolar planet parent stars are presented. The companion of one of these stars, HD 10697, has recently been shown to have a massExpand
The two metallicity groups of the globular cluster M 22: a chemical perspective
We present a detailed chemical composition analysis of 35 red giant stars in the globular cluster M22. High resolution spectra for this study were obtained at five observatories, and analyzed in aExpand
The Galactic Habitable Zone: Galactic Chemical Evolution
Abstract We propose the concept of a “Galactic Habitable Zone” (GHZ). Analogous to the Circumstellar Habitable Zone (CHZ), the GHZ is that region in the Milky Way where an Earth-like planet canExpand
“Sculptor-ing” the Galaxy? The Chemical Compositions of Red Giants in the Sculptor Dwarf Spheroidal Galaxy
We used high-resolution, high signal-to-noise ratio spectra obtained with the Very Large Telescope and the UV-Visual Echelle Spectrograph to determine abundances of 17 elements in four red giants inExpand
Parent Stars of Extrasolar Planets. VII. New Abundance Analyses of 30 Systems
The results of new spectroscopic analyses of 30 stars with giant planet and/or brown dwarf companions are presented. Values for Teff and [Fe/H] are used in conjunction with Hipparcos data and PaduaExpand
Elemental Abundances in Giants in NGC 3201, a Globular Cluster with a Retrograde Orbit
We report the results of an analysis of high-quality spectroscopic and photometric observations of 18 giants in NGC 3201. We have included α Boo and the cool metal-poor field star HDE 232078 asExpand
Parent Stars of Extrasolar Planets. V. HD 75289
The results of a new spectroscopic analysis of HD 75289, recently reported to harbor a Jovian-mass planet, are presented. From high-resolution, high signal-to-noise ratio spectra, we derive [Fe/H] =Expand
Rummaging through Earth's attic for remains of ancient life
Abstract We explore the likelihood that early remains of Earth, Mars, and Venus have been preserved on the Moon in high enough concentrations to motivate a search mission. During the Late HeavyExpand
Abundance Analyses of Field RV Tauri Stars. V. DS Aquarii, UY Arae, TW Camelopardalis, BT Librae, U Monocerotis, TT Ophiuchi, R Scuti, and RV Tauri
Abundance analyses are presented and discussed for eight RV Tauri variables. The RVB star UY Ara shows the abundance anomalies seen in other RVB stars, namely, elements that condense into grains atExpand