J/ApJS/195/24 IR spectrum of Uranium hollow cathode lamps (Redman+, 2011)
The infrared spectrum of uranium hollow cathode lamps from 850 nm to 4000 nm:
wavenumbers and line identifications from Fourier transform spectra.
Redman S.L., Lawler J.E., Nave G., Ramsey L.W., Mahadevan S.
<Astrophys. J. Suppl. Ser., 195, 24 (2011)>
=2011ApJS..195...24R 2011ApJS..195...24R
ADC_Keywords: Atomic physics ; Line Profiles
Keywords: astronomical databases: miscellaneous - atomic data -
line: identification - standards
Abstract:
We provide new measurements of wavenumbers and line identifications of
10100 UI and UII near-infrared (NIR) emission lines between 2500cm-1
and 12000cm-1 (850-4000nm) using archival Fourier transform
spectrometer spectra from the National Solar Observatory. This line
list includes isolated uranium lines in the Y, J, H, K, and L bands
(0.9-1.1um, 1.2-1.35um, 1.5-1.65um, 2.0-2.4um, and 3.0-4.0um,
respectively), and provides six times as many calibration lines as
thorium in the NIR spectral range. The line lists we provide enable
inexpensive, commercially available uranium hollow cathode lamps to be
used for high-precision wavelength calibration of existing and future
high-resolution NIR spectrographs.
Description:
The observations used for our measurements were made with the 1m
Fourier transform spectrometer (FTS) on Kitt Peak between 1979 and
2002, and are publicly available on the National Solar Observatory
(NSO) Web site (http://diglib.nso.edu/nso_user.html).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 76 11956 Uranium line list sample
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 cm-1 sigma ? Wavenumber σ
12- 14 F3.1 10-3/cm e_sigma ? Uncertainty in sigma
16- 24 F9.4 nm lambda ? Wavelength λ
26- 28 F3.1 pm e_lambda ? Uncertainty in lambda
30- 38 F9.2 --- RFlux ? Relative photon flux
40- 43 A4 --- Ion Species identification (1)
45- 49 I5 cm-1 E1 ? Upper J level energy
51- 55 A5 --- J1 Upper J level
57- 61 I5 cm-1 E0 ? Lower J level energy
63- 67 A5 --- J0 Lower J level
69- 73 F5.1 10-3/cm dRitz ? Offset from Ritz energy level difference
75- 76 A2 --- Note [bl ] "bl" = blended at the resolution
of the Fourier transform spectrometer
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Note (1): Lines unassociated with known uranium level transitions are
identified as a "?". These lines are likely also uranium lines,
based on their narrow line widths.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 22-Sep-2011