6 papers
Experimental Ni II Oscillator Strengths for Transitions from to Levels Measured Using High-resolution Fourier Transform Spectroscopy
Ruijie Chen, Christian P. Clear, Gillian Nave +1
We present the first experimentally measured oscillator strengths for Ni II 3d4d - 3d4p transitions. High-resolution Fourier transform spectra were recorded of Ni-He hollow…
HRMOS: A High-Resolution Multi-Object Spectrograph for the VLT
Laura Magrini, Thomas Bensby, Sofia Randich +174
This White Paper presents the scientific rationale and instrument concept for HRMOS (High-Resolution Multi-Object Spectrograph), a next-generation instrument proposed for the ESO V…
Wavelengths and Energy Levels of Neutral Manganese (Mn I) Determined Using High-Resolution Fourier Transform and Grating Spectroscopy
Christian P. Clear, Gillian Nave, Richard Blackwell-Whitehead +3
An extensive analysis of the spectrum of neutral manganese has been performed using spectra of manganese-neon and manganese-argon hollow cathode discharges measured using high reso…
A neural network approach for line detection in complex atomic emission spectra measured by high-resolution Fourier transform spectroscopy
M. Ding, S. Z. J. Lim, X. Yu +2
The atomic spectra and structure of the open d- and f-shell elements are extremely complex, where tens of thousands of transitions between fine structure energy levels can be obser…
Reference wavelengths of Si II, C II, Fe I, and Ni II
Gillian Nave, Christian Clear
Wavelengths of absorption lines in the spectra of galaxies along the line-of-sight to distant quasars can be used to probe the variablility of the fine structure constant, , at…
Lifetime measurements and oscillator strengths in singly ionised scandium and the solar abundance of scandium
A. Pehlivan Rhodin, M. T. Belmonte, L. Engstrom +8
The lifetimes of 17 even-parity levels (3d5s, 3d4d, 3d6s, and 4p) in the region 57743-77837 cm of singly ionised scandium (\ion{Sc}{ii}) were measured by two-step time-r…