The LTE solar abundance of neodymium

TL;DR

This paper determines the solar photospheric abundance of singly ionized neodymium (Nd II) using high-resolution spectroscopic data and LTE assumptions, resulting in a value consistent with meteoric measurements.

Contribution

It provides a new LTE-based solar Nd abundance value derived from 51 Nd II lines with high-quality atomic data, improving previous estimates.

Findings

Derived solar Nd abundance: log εNd=1.45 ± 0.08

Selected 51 Nd II lines with accurate atomic data

Abundance value aligns with meteoric data

Abstract

We study the solar photospheric abundance of singly ionized neodymium (Nd II) using high resolution spectroscopic data obtained by Fourier transform spectrograph (FTS). Based on the Local Thermodynamical Equilibrium (LTE) assumption, a new value of Nd abundance is derived. We succeed to select of 51 solar Nd II lines with accurate transition probabilities measured experimentally by Den Hartog et al. (2003) and with accurate damping parameters are determined from literature. Relying on atomic data of Opacity Distribution Function (ODF), we construct theoretical photospheric solar model. The mean solar photospheric abundance obtained from all 51 Nd II lines is log {\epsilon}Nd=1.45 +- 0.08, which is mostly similar to the meteoric value.