INVESTIGADORES
FLORES TRIVIGNO Matias Gaston
congresos y reuniones científicas
Título:
Testing lambda Bootis formation scenarios
Autor/es:
JOSÉ ALACORIA; PAULA MIQUELARENA; DANIELA CALVO; MARTÍN GIRARDI, G.; GARCIA, LUCIANO; FLORES MATÍAS
Lugar:
Córdoba
Reunión:
Congreso; 63 Reunión de la Asociación Argentina de Astronomía; 2021
Institución organizadora:
Observatorio Astronómico de Córdoba
Resumen:
The λ Boötis stars are a group of chemically peculiar objects on the upper main-sequence, showing underabundances (1–2 dex) of iron-peak elements and near-solar abundances of C, N, O, and S. The class was namedfollowing the bright prototype λ Boötis, which is one extreme member of the class. This group of refractory-poor objects comprises about 2% of early B through early F stars. However, among the pre-main-sequence HerbigAe/Be stars, that is to say, the progenitors of A-type stars, the λ Boötis-like fraction is about 33% (see e.g. the recent review of Murphy & Paunzen 2017, and references therein).