Vanadium Transitions in the Spectrum of Arcturus
Abstract
We derive a new abundance for vanadium in the bright, mildly metal-poor red giant Arcturus. This star has an excellent high-resolution spectral atlas and well-understood atmospheric parameters, and it displays a rich set of neutral vanadium lines that are available for abundance extraction. We employ a newly recorded set of laboratory FTS spectra to investigate any potential discrepancies in previously reported V I log(gf) values near 900 nm. These new spectra support our earlier laboratory transition data and the calibration method utilized in that study. We then perform a synthetic spectrum analysis of weak V I features in Arcturus, deriving log ∊(V) = 3.54 ± 0.01 (σ = 0.04) from 55 lines. There are no significant abundance trends with wavelength, line strength, or lower excitation energy.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- February 2018
- DOI:
- arXiv:
- arXiv:1712.06942
- Bibcode:
- 2018ApJS..234...25W
- Keywords:
-
- atomic data;
- line: profiles;
- methods: laboratory: atomic;
- stars: abundances;
- stars: individual: Arcturus;
- Astrophysics - Solar and Stellar Astrophysics;
- Physics - Atomic Physics
- E-Print:
- Accepted for publication in ApJS
