Opacities of S-type Stars: The Singlet B¹⊓−X¹Σ⁺, B¹⊓−A¹Δ, and C¹Σ⁺−X¹Σ⁺ Band Systems of ZrO

Authors

Peter F. Bernath, Old Dominion UniversityFollow
Manish Bhusal, Old Dominion UniversityFollow
Jacques Liévin, Université Libre de Bruxelles

Document Type

Article

Publication Date

2024

DOI

10.3847/1538-4357/ad0386

Publication Title

The Astrophysical Journal

Volume

960

Issue

1

Pages

23 (1-11)

Abstract

The ZrO B¹Π–X¹Σ⁺, B¹Π–A¹Δ, and C¹Σ+–X¹Σ⁺ band systems are important opacity sources in the near-infrared and optical spectra of S-type stars. A total of 21 rovibronic bands with v'' ≤ 7 and v' ⩽ 5 were observed and fit for the B¹Π–X¹Σ⁺ transition, five bands for the ⁹⁰ZrO B¹Π–A¹Δ transition and one band for the ⁹⁰ZrO C¹Σ⁺–X¹Σ⁺ transition. All band systems were analyzed using high-temperature, high-resolution emission spectra collected at the National Solar Observatory (Kitt Peak). A modern spectroscopic analysis was performed using the PGOPHER program to provide updated spectroscopic constants. In general, we improve the accuracy of the line positions reported in the literature and slightly extend the vibrational analysis. Equilibrium molecular constants were then derived and combined with new ab initio calculations of transition dipole moment functions to produce line lists with line strengths.

Rights

© 2023 The Authors.

Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Comments

Spectral line lists:

http://astrothesaurus.org/uat/2082

http://astrothesaurus.org/uat/2248

http://astrothesaurus.org/uat/2260

Original Publication Citation

Bernath, P. F., Bhusal, M., & Liévin, J. (2024). Opacities of S-type stars: The singlet B¹⊓−X¹Σ⁺, B¹⊓−A¹Δ, and C¹Σ⁺−X¹Σ⁺ band systems of ZrO. Astrophysical Journal, 960(1), 1-11, Article 23. https://doi.org/10.3847/1538-4357/ad0386

ORCID

0000-0002-1255-396X (Bernath), 0009-0008-6042-3271 (Bhusal)

Repository Citation

Bernath, Peter F.; Bhusal, Manish; and Liévin, Jacques, "Opacities of S-type Stars: The Singlet B¹⊓−X¹Σ⁺, B¹⊓−A¹Δ, and C¹Σ⁺−X¹Σ⁺ Band Systems of ZrO" (2024). Chemistry & Biochemistry Faculty Publications. 284.
https://digitalcommons.odu.edu/chemistry_fac_pubs/284