• Citer

S-type Stars: LaO Line List for the B2ς+-X2ς+Band System

par Bernath, Peter ;Dodangodage, Randika;Liévin, Jacques
Référence The Astrophysical journal, 933, 1, 99
Publication Publié, 2022-07-01

Article révisé par les pairs

• Accès en ligne
• Détails
• Contenu
• Statistiques

Résumé :

LaO bands are a characteristic feature in the spectrum of cool S-type stars. La is made primarily by the s-process during the asymptotic giant branch phase of stellar evolution. The B2ς+-X2ς+ and A2Π-X2ς+ band systems can be used to determine the La abundances in cool S stars. The bands of the B2ς+-X2ς+ with v′ and v′′≤5 have been rotationally analyzed from an emission spectrum from a carbon furnace. Line strengths are calculated using an ab initio transition dipole function, corrected using experimental lifetimes. We provide a line list for the B2ς+-X2ς+ band system that can be used to determine La abundances.