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J/A+AS/108/287 Atomic data (Verner+, 1994)
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Atomic data for absorption lines from the ground level at wavelengths
greater than 228 A
Verner D.A., Barthel P.D., Tytler D.
<Astron. Astrophys. Suppl. Ser. 108, 287 (1994)>
=1994A&AS..108..287V (SIMBAD/NED Reference)
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ADC_Keywords: Atomic physics; Ultraviolet
Keywords: atomic data - quasars: absorption lines - ultraviolet: general
Abstract:
We list wavelengths, statistical weigths and oscillator strengths for 2249
spectral lines arising from the ground states of atoms and ions. The
compilation covers all wavelengths longward of the He II Lyman limit at 227.
838A and all the ion states of all elements from hydrogen to bismuth (Z=83)
for which reliable data are known. We assign experimental wavelengths to
1086 lines which have oscillator strengths calculated in the Opacity
Project, and add 1163 lines which have critically evaluated oscillator
strengths from previous compilations. The presented data are to be used for
quasar absorption spectra interpretation. We use solar abundances to
calculate the expected relative strengths of all absorption lines, and
list separately the strongest lines above 228A expected in QSO absorption
systems, many of which are listed here for the first time. The great
majority of strong lines expected in quasar spectra are at {lambda}<912A.
We also list the strongest absorption lines of various ions without
wavelength restriction.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 24 151 Strong lines above 228 A expected in quasar
absorption systems
table2.dat 69 43 Strongest lines above 228 A without
experimental wavelengths
table3.dat 26 83 Atomic weights and solar-system abundances
table4.dat 108 471 Ionization thresholds and strongest lines of
atoms and ions
table5.dat 102 2267 Resonance absorption lines above 228 A ordered
by element
table6.dat 45 2249 Resonance absorption lines above 228 A ordered
by wavelength
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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- 9 F9.4 0.1nm lambda Wavelength
12- 17 A6 --- Species Identification
20- 24 F5.2 --- P Expected width (strength) parameter
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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- 5 A5 --- Species Identification
8- 28 A21 --- Transition Transition
31- 37 A7 --- Multiplet Multiplet
40- 45 F6.1 0.1nm lambda Theoretical wavelength
48- 48 I1 --- Gi Lower level statistical weight
51- 51 I1 --- Gk Upper level statistical weight
54- 62 E9.3 --- Fik Oscillator strength
65- 69 F5.2 --- P Expected width (strength) parameter
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Element Chemical element
5- 6 I2 --- Z Atomic number
9- 19 F11.7 --- Atomic weight Atomic weight
22- 26 F5.2 --- Abundance Solar-system abundance
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Species Identification
11- 12 I2 --- Z Atomic number
15- 16 I2 --- N Number of electrons
19- 58 A40 --- Configuration Ground state electronic configuration.
Only the five outer shells are indicated
61- 71 F11.5 eV E Ionization potential
74- 82 F9.4 0.1nm lambda Vacuum wavelength
85- 86 I2 --- Gi Lower level statistical weight
89- 90 I2 --- Gk Upper level statistical weight
93-101 E9.3 --- Fik Oscillator strength
104-108 F5.2 --- P Expected width (strength) parameter (1)
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Note (1): P=log({lambda}f)+log(N/N_H_)+12.00
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Species Identification
10- 11 I2 --- Z Atomic number
14- 15 I2 --- N Number of electrons
18- 41 A24 --- Transition Transition
44- 50 A7 --- Multiplet Multiplet
53- 61 F9.4 0.1nm lambda Vacuum wavelength
64- 65 I2 --- Gi Lower level statistical weight
68- 69 I2 --- Gk Upper level statistical weight
72- 80 E9.3 --- Fik Oscillator strength (Opacity Project)
83- 91 E9.3 --- F'ik Oscillator strength (other sources)
94- 98 F5.2 --- P Expected width (strength) parameter (1)
101-102 I2 --- Ref Reference to source of wavelength
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Note (1): P=log({lambda}f)+log(N/N_H_)+12.00
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 9 F9.4 0.1nm lambda Vacuum wavelength
11- 17 A7 --- Species Identification
19- 20 I2 --- Z Atomic number
22- 23 I2 --- N Number of electrons
25- 26 I2 --- Gi Lower level statistical weight
28- 29 I2 --- Gk Upper level statistical weight
31- 39 E9.3 --- Fik Oscillator strength
41- 45 F5.2 --- P Expected width (strength) parameter (1)
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Note (1): P=log({lambda}f)+log(N/N_H_)+12.00
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Courtesy: Verner D.A.
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(End) Patricia Bauer [CDS] 01-Jul-1994