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astro-ph.SR2025
Discovery of lambda Boo stars in open clusters
C. Saffe, J. Alacoria, A. Alejo +7
The origin of lambda Boo stars is currently unknown. After several efforts by many authors, no bona fide lambda Boo stars have been confirmed as members of open clusters. Their det…
astro-ph.SR2024
Disentangling the origin of chemical differences using GHOST
C. Saffe, P. Miquelarena, J. Alacoria +8
Aims. We explore different scenarios to explain the chemical difference found in the remarkable giant-giant binary system HD 138202 + CD-30 12303. For the first time, we suggest ho…