An Updated Line List for Spectroscopic Investigation of G Stars- I: Redetermination of the Abundances in the Solar Photosphere
Abstract
We propose a line list that may be useful for the abundance analysis of G-type stars in the wavelength range 4080 -- 6780 Å. It is expected that the line list will be useful for surveys/libraries with overlapping spectral regions (e.g. ELODIE/SOPHIE libraries, UVES-580 setting of Gaia-ESO), and in particular for the analysis of F- and G-type stars in general. The atomic data are supplemented by detailed references to the sources. We estimated the Solar abundances using stellar lines and the high-resolution Kitt Peak National Observatory (KPNO) spectra of the Sun to determine the uncertainty in the $\log gf$ values. By undertaking a systematic search that makes use of the lower excitation potential and $gf$-values and using revised multiplet table as an initial guide, we identified 363 lines of 24 species that have accurate $gf$-values and are free of blends in the spectra of the Sun and a Solar analogue star, HD 218209 (G6V), for which accurate and up-to-date abundances were obtained from both ELODIE and PolarBASE spectra of the star. For the common lines with the Gaia-ESO line list v.6 provided by the Gaia-ESO collaboration, we discovered significant inconsistencies in the $gf$-values for certain lines of varying species.
- Publication:
-
Physics and Astronomy Reports
- Pub Date:
- December 2023
- DOI:
- 10.26650/PAR.2023.00007
- arXiv:
- arXiv:2310.04129
- Bibcode:
- 2023PARep...1...54S
- Keywords:
-
- Line: identification;
- Sun: abundances;
- Sun: fundamental parameters;
- Stars: individual (HD218209);
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 17 pages, 4 figures and 5 tables, accepted for publication in Physics and Astronomy Reports