Document Type

Article

Publication Date

2025

DOI

10.3847/1538-4357/adbd3f

Publication Title

The Astrophysical Journal

Volume

982

Issue

2

Pages

156 (1-9)

Abstract

ZrO has many low-lying states, and its spectra are essential for the characterization of S-type stars. A high-resolution emission spectrum recorded with a Fourier transform spectrometer at the National Solar Observatory is used for the analysis. The 0–0 and 1–0 bands of the f³Δ-a³Δ system (α system) and the 0–0 band of the e³Π-a³Δ system (β system) have been rotationally analyzed using the modern spectral fitting program PGOPHER. New ab initio calculations of transition dipole moments have been performed to determine the band strengths. These band strengths are used to produce line lists that are suitable for the simulation of stellar spectra.

Rights

© 2025 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 authors and the title of the work, journal citation and DOI.

Original Publication Citation

Bhusal, M., Bernath, P. F., & Liévin, J. (2025). Unraveling visible spectra of S-type stars: The f³Δ-a³Δ (α system) and e³Π-a³Δ (β system) band systems of ZrO. The Astrophysical Journal, 982(2), 1-9, Article 156. https://doi.org/10.3847/1538-4357/adbd3f

ORCID

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

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