4 papers
The Metallicity of Post-T Tauri Stars: A preliminary approach to the understanding of the metal enrichment of stars harboring planets
Ramiro de la Reza, Licio da Silva, Roberta Almeida +3
The metallicity of young low mass Post-T Tauri stars in coeval associations is practically unknown. This work is the beginning of a systematic measurement of these metallicities ba…
A Method to Search for Associations of Young Stars
Germano R. Quast, Carlos A. O. Torres, Claudio H. F. Melo +3
In the SACY (Search for Associations Containing Young-stars) project we try to identify associations of stars younger than the Local Association among HIPPARCOS and/or TYCHO-2 star…
The Enigma of Lithium: from CP Stars to K Giants. First Results of CP Star Observations Obtained at Mount Stromlo Observatory
N. S. Polosukhina, N. A. Drake, M. Hack +3
We present the results of the observations of some roAp stars made at Mount Stromlo Observatory during 17 nights in 2001 September-October. This long observing run permitted us to…
New Southern Groups
R. de la Reza, L. da Silva, E. Jilinski +2
Since the eighties we have begun, in Brazil, a search for Post-T Tauri stars. Here we describe the main steps of this research that resulted in the discovery of the nearby TW Hya a…