LaO LINE LIST FOR THE A²Π-X²Σ⁺ BAND SYSTEM

Dodangodage, Randika

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https://hdl.handle.net/2142/122441 Copy

Description

Title

LaO LINE LIST FOR THE A²Π-X²Σ⁺ BAND SYSTEM

Author(s)

Dodangodage, Randika

Contributor(s)

• Liévin, Jacques
• Bernath, Peter F.

Issue Date

2023-06-21

Keyword(s)

Linelists

Abstract

The bands of LaO appear prominently in the spectra of cool S-type stars and can be used to determine La abundances. We have rotationally analyzed the LaO A²Π-X²Σ⁺ band system up to v=3 in the excited state using PGOPHER. The spectroscopic constants for the ground state were taken from our previous analysis of B²Σ⁺-X²Σ⁺ band system [1]. The band and equilibrium constants for the A²Π state were determined. RKR potentials were calculated and band strengths were obtained using LeRoy’s LEVEL program with an ab initio transition dipole moment. This work also provides calculated radiative lifetimes for v=0 to v=3 of the A state. A line list for the LaO A²Π-X²Σ⁺ transition is provided which can be used to simulate LaO spectra in S-type stars.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Genre of Resource

Conference Paper / Presentation

Language

eng

Handle URL

https://hdl.handle.net/2142/122441

DOI

https://doi.org/10.15278/isms.2023.6744

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