Document Type

Article

Publication Date

2019

DOI

10.1093/mnras/stz1856

Publication Title

Monthly Notices of the Royal Astronomical Society

Volume

488

Issue

2

Pages

2332-2342

Abstract

A rovibronic line list for the ground (X3Σ−) and first excited (a1Δ) states of phosphinidene, 31PH, is computed. The line list is designed for studies of exoplanetary and cool stellar atmospheres with temperatures up to 4000 K. A combination of empirical and ab initio data is used to produce the line list: potential energy curves (PECs) are fitted using experimental transition frequencies; these transitions are reproduced with a root mean square error of 0.01 cm−1. The nuclear Schrödinger equation is solved using these PECs plus Born–Oppenheimer and spin splitting correction terms. Line intensities and Einstein A coefficients are computed using ab initio dipole moment curves for X – X and a – a transitions. The resulting LaTY line list, which contains 65 055 transitions for 2528 rovibronic states up to 24 500 cm−1 and J = 80, is used to simulate spectra in emission and absorption for a range of temperatures. The line list is made available in electronic form at the CDS and ExoMol data bases.

Comments

This is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Original Publication Citation

Langleben, J., Tennyson, J., Yurchenko, S. N., & Bernath, P. (2019). ExoMol line list - XXXIV. A rovibrational line list for phosphinidene (PH) in its X³Σ¯ and a¹Δ electronic states. Monthly Notices of the Royal Astronomical Society, 488(2), 2332-2342. doi:10.1093/mnras/stz1856

ORCID

0000-0002-1255-396X (Bernath)

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