11 papers · 1 filter
Parent Stars of Extrasolar Planets. IX. Lithium Abundances
Guillermo Gonzalez
We compare the Li abundances of a sample of stars with planets discovered with the Doppler method to a sample of stars without detected planets. We prepared the samples by combinin…
Parent Stars of Extrasolar Planets. VIII. Chemical Abundances for 18 Elements in 31 Stars
Guillermo Gonzalez, Chris Laws
We present the results of detailed spectroscopic abundance analyses for 18 elements in 31 nearby stars with planets. The resulting abundances are combined with other similar studie…
The Chemical Compositions of Stars with Planets: A Review
Guillermo Gonzalez
A number of trends among the properties of exoplanets have become evident in the years since the first one was announced in 1995. One particularly interesting trend began to emerge…
Condensation temperature trends among stars with planets
Guillermo Gonzalez
Results from detailed spectroscopic analyses of stars hosting massive planets are employed to search for trends between abundances and condensation temperatures. The elements C, S,…
Habitable Zones in the Universe
G. Gonzalez
Habitability varies dramatically with location and time in the universe. This was recognized centuries ago, but it was only in the last few decades that astronomers began to system…
Abundance Analyses of Field RV Tauri Stars, VI: An Extended Sample
Sunetra Giridhar, David L. Lambert, Bacham E. Reddy +2
An abundance analysis is presented and discussed for a sample of 14 RV Tauri stars. The present abundance data and those from our previous papers and by other workers are combined…