2022
DOI: 10.48550/arxiv.2202.05066
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Testing the accretion scenario of lambda Boo stars

J. Alacoria,
C. Saffe,
M. Jaque Arancibia
et al.

Abstract: Context. The group of λ Boo stars is known for years, however the origin of its chemical peculiarity is still strongly debated. Aims. Our aim is to test the accretion scenario of λ Boo stars. This model predicts that a binary system with two early-type stars passing through a diffuse cloud should both display the same superficial peculiarity. Methods. Via spectral synthesis, we carried out a detailed abundance determination of three multiple systems hosting a candidate λ Boo star: the remarkable triple system … Show more

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