A Combined Astrometric and Spectroscopic Study of Metal-Poor Binaries

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Benamati, L (Autor) Outra; Sozzetti, A (Autor) Outra; N.C. Santos (Autor) FCUP; Latham, DW (Autor) Outra

Revista

Título: Publications of the Astronomical Society of the Pacific

Vol. 125

Páginas: 1315-1328

ISSN: 0004-6280

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-008-HWR

DOI: 10.1086/674147

Abstract (EN): In this work we present a study of binary systems in a metal-poor sample of solar type stars. The stars analyzed were rejected from two planet search samples because they were found to be binaries. Using available radial velocity and Hipparcos astrometric data, we apply different methods to find, for every binary system, a possible range of solutions for the mass of the companion and its orbital period. In one case we find that the solution depends on the Hipparcos data used: the old and new reductions give different results. Some candidate low-mass companions are found, including some close to the brown dwarf regime.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14