J/A+A/468/1115 Thorium and argon lines in the visible (Lovis+, 2007)
A new list of thorium and argon spectral lines in the visible.
Lovis C., Pepe F.
<Astron. Astrophys. 468, 1115 (2007)>
=2007A&A...468.1115L 2007A&A...468.1115L
ADC_Keywords: Atomic physics ; Spectroscopy
Keywords: atomic data - techniques: spectroscopic - atlases - catalogs
Abstract:
We present a new list of thorium and argon emission lines in the
visible obtained by analyzing high-resolution (R=110000) spectra
of a ThAr hollow cathode lamp. The aim of this new line list is to
allow significant improvements in the quality of wavelength
calibration for medium- to high-resolution astronomical spectrographs.
We use a series of ThAr lamp exposures obtained with the HARPS
instrument (High Accuracy Radial-velocity Planet Searcher) to detect
previously unknown lines, perform a systematic search for blended
lines and correct individual wavelengths by determining the systematic
offset of each line relative to the average wavelength solution.
Description:
This thorium and argon line list has been derived from ThAr spectra
obtained with the HARPS instrument at the ESO-3.6m telescope at La
Silla Observatory. It contains the updated wavelengths of 8442 lines
between 3785 and 6915Å, with a typical accuracy of 10m/s (3.3 parts
in 108 or 0.18mÅ). Line intensities, previously-known wavelengths
and identifications are also provided.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 60 8442 Thorium and argon line list
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.6 0.1nm Lambda Vacuum wavelength
13- 20 F8.6 0.1nm e_Lambda Uncertainty on wavelength
22- 32 F11.5 cm-1 Wavenumber Wavenumber (1/Lambda)
34- 40 I7 --- Intensity Line peak intensity (in e-)
42- 52 F11.6 0.1nm preLambda ? Previously-known wavelength
55- 60 A6 --- ID Line identification (1)
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Note (1): ID as follows:
ThI = ThI from Palmer & Engleman (1983, Atlas of the Thorium spectrum)
ThII = ThII from Palmer & Engleman (1983, Atlas of the Thorium spectrum)
ThIII = ThIII from Palmer & Engleman (1983, Atlas of the Thorium spectrum)
NoID = Not identified by Palmer & Engleman
(1983, Atlas of the Thorium spectrum) (probably Th)
Contam = Contaminant from Palmer & Engleman
(1983, Atlas of the Thorium spectrum)
ArI = ArI from Norlen (1973PhyS....8..249N 1973PhyS....8..249N) and
Whaling et al. (1995JQSRT..53....1W 1995JQSRT..53....1W, 2002, JRES , 107, 149)
ArII = ArII from Norlen (1973PhyS....8..249N 1973PhyS....8..249N) and
Whaling et al. (1995JQSRT..53....1W 1995JQSRT..53....1W, 2002, JRES, 107, 149)
? = Previously-unknown line
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References:
Norlen, G. 1973, Phys. Scr, 8, 249
Palmer, B.A. & Engleman, R. 1983, Atlas of the Thorium spectrum (Los Alamos
National Laboratory Report, LA-9615)
Whaling, W., Anderson, W.H.C., Carle, M.T., et al., 1995, Journal of
Quantitative Spectroscopy and Radiative Transfer, 53, 1
Whaling, W., Anderson, W.H.C., Carle, M.T., et al., 2002, Journal of Research
of the National Institute of Standards and Technology, 107, 149
Acknowledgements:
Christophe Lovis, christophe.lovis(at)obs.unige.ch
(End) Christophe Lovis [Geneva Observatory], Patricia Vannier [CDS] 19-Mar-2007