118 citations · 427 across the 9 of their papers we have counts for
9 papers
Atomic Transition Probabilities for UV and Optical Lines of Tm II
E. A. Den Hartog, G. T. Voith, I. U. Roederer
We report new branching fraction measurements for 224 ultraviolet (UV) and optical transitions of Tm II. These transitions range in wavelength (wavenumber) from 2350 - 6417 Angstro…
Iron-Peak Element Abundances in Warm Very Metal-Poor Stars
Christopher Sneden, Ann Merchant Boesgaard, John J. Cowan +3
We have derived new detailed abundances of Mg, Ca, and the Fe-group elements Sc through Zn (Z = 21-30) for 37 main sequence turnoff very metal-poor stars ([Fe/H] <= -2.1). We analy…
Atomic Transition Probabilities for Transitions of Si I and Si II and the Silicon Abundances of Several Very Metal-Poor Stars
E. A. Den Hartog, J. E. Lawler, C. Sneden +2
We report new measurements of branching fractions for 20 UV and blue lines in the spectrum of neutral silicon (Si I) originating in the 334 P, $^…
The R-Process Alliance: A Nearly Complete R-Process Abundance Template Derived from Ultraviolet Spectroscopy of the R-Process-Enhanced Metal-Poor Star HD 222925
Ian U. Roederer, James E. Lawler, Elizabeth A. Den Hartog +9
We present a nearly complete rapid neutron-capture process (r-process) chemical inventory of the metal-poor ([Fe/H] = -1.46 +/- 0.10) r-process-enhanced ([Eu/Fe] = +1.32 +/- 0.08)…
Vanadium Transitions in the Spectrum of Arcturus
M. P. Wood, C. Sneden, J. E. Lawler +3
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 atmospheri…
Iron-Group Abundances in the Metal-Poor Main Sequence Turnoff Star HD~84937
Christopher Sneden, John J. Cowan, Chiaki Kobayashi +4
We have derived new very accurate abundances of the Fe-group elements Sc through Zn (Z = 21-30) in the bright main-sequence turnoff star HD 84937, based on high-resolution spectra…
Fe I Oscillator Strengths for Transitions from High-lying Even-Parity Levels
E. A. Den Hartog, M. P. Ruffoni, J. E. Lawler +3
New radiative lifetimes, measured to 5 % accuracy, are reported for 31 even-parity levels of Fe I ranging from 45061 cm to 56842 cm. These lifetimes have been m…
Improved V II log() Values, Hyperfine Structure Constants, and Abundance Determinations in the Photospheres of the Sun and Metal-poor Star HD 84937
M. P. Wood, J. E. Lawler, E. A. Den Hartog +2
New experimental absolute atomic transition probabilities are reported for 203 lines of V II. Branching fractions are measured from spectra recorded using a Fourier transform spect…
Fe I Oscillator Strengths for the Gaia-ESO Survey
M. P. Ruffoni, E. A. Den Hartog, J. E. Lawler +4
The Gaia-ESO Public Spectroscopic Survey (GES) is conducting a large-scale study of multi-element chemical abundances of some 100 000 stars in the Milky Way with the ultimate aim o…