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Search Publications by: Gillian Nave (Assoc)

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Displaying 26 - 50 of 154

Commissioning the SALT High Resolution Spectrograph's Iodine Cell

July 6, 2018
Author(s)
Lisa A. Crause, R P. Butler, Gillian Nave, Rudi Kuhn, Blaine Lomberg, Alexei Kniazev, Steven M. Crawford, Eric Depagne
We report on commissioning the iodine absorption cell in the High Resolution Spectrograph (HRS) on the Southern African Large Telescope (SALT). The low-, medium- and high-resolution (LR, MR and HR) modes of this fibre-fed, dual-channel, white-pupil vacuum

J. Chem. Phys. 148, 244302 (2018); https://doi.org/10.1063/1.5029929148, 244302(C) 2018 Author(s).Fourier-transform-spectroscopicphotoabsorption cross sections andoscillator strengths for theS2 B 3..u..X 3..g system

June 25, 2018
Author(s)
G. Stark, H. Herde, J. R. Lyons, A. N. Heays, N. Oliveira, Gillian Nave, B. R. Lewis, S. T. Gibson
Photoabsorption cross sections and oscillator strengths for the strong, predissociating vibrational bands, v  11, in the S2 B 3..u .. X 3..g (v; 0) system are reported. Absorption measurements were undertaken of S2 vapor in a radio-frequency discharge

Vanadium Transitions in the Spectrum of Arcturus

February 1, 2018
Author(s)
Michael P. Wood, Chris Sneden, James E. Lawler, E. A. Den Hartog, John J. Cowan, Gillian Nave
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

The Cu II Spectrum

February 24, 2017
Author(s)
Alexander Kramida, Gillian Nave, Joseph Reader
New wavelength measurements in the vacuum ultraviolet (VUV), ultraviolet and visible spectral regions have been combined with available literature data to refine and extend the description of the spectrum of singly ionized copper (Cu II). In the VUV region

Comprehensive atomic wavelengths, energy levels and hyperfine structure for singly-ionized iron-group elements

January 23, 2017
Author(s)
Gillian Nave, Craig J. Sansonetti, Keeley I. Townley-Smith, J C. Pickering, Florence Liggins, Anne P. Thorne, Christian Clear
We summarize recent work at the National Institute of Standards and Technology and Imperial College London on wavelengths, hyperfi ne structure, energy levels, and analysis of singly-ionized iron-group elements of astrophysical interest.

Extended Analysis of the Spectrum of Singly Ionized Chromium (Cr II)

July 23, 2014
Author(s)
Craig J. Sansonetti, Gillian Nave
We have made new observations of the spectrum of singly-ionized chromium (Cr II) in the region 2850 Angstrom to 37900 Angstrom with the National Institute of Standards and Technology 2 m Fourier transform spectrometer. These data extend our previously

Fe I Oscillator Strengths for the Gaia-ESO Survey

May 27, 2014
Author(s)
Matthew Ruffoni, E. A. Den Hartog, James E. Lawler, N. R. Brewer, K. Lind, Gillian Nave, J C. Pickering
The Gaia-ESO Public Spectroscopic Survey (GES) is conducting a large-scale study of multielement chemical abundances of some 100; 000 stars in the Milky Way with the ultimate aim of quantifying the formation history and evolution of young, mature and

Development of Fiber Fabrey-Perot Interferometers as stable near-infrared calibration sources for high resolution spectrographs

April 30, 2014
Author(s)
Samuel Halverson, Suvrath Mahadevan, Lawrence W. Ramsey, Fred Hearty, John C. Wilson , Jon Holtzman, Stephen L. Redman, Gillian Nave, David Nidever, Matthew Nelson, Nick Venditti, Dmitry Bizyaev , Scott Fleming
We discuss the ongoing development of single-mode ber Fabry-Perot(FFP)Interferometers as precise astrophotonic calibration sources for high precision radial velocity (RV) spectrographs. The devices are simple, inexpensive, monolithic units that can yield a