J/A+AS/135/359 HI and HeII fine structure components (Clegg+ 1999)
Recombination line intensities for hydrogenic ions:
the fine structure components of HI and HeII
Clegg R.E.S., Miller S., Storey P.J., Kisielius R.
<Astron. Astrophys. Suppl. Ser. 135, 359 (1999)>
=1999A&AS..135..359C 1999A&AS..135..359C
ADC_Keywords: Atomic physics
Keywords: atomic data - line: formation - line: profiles - H II regions -
planetary nebulae: general
Abstract:
Emissivities have been calculated for fine-structure components of
selected UV and optical recombination lines of HI and HeII. Results
are given for a range of electron temperatures and densities, and in
Cases A and B of Baker & Menzel (1938ApJ....88...52B 1938ApJ....88...52B). Relative
intensities, wavelengths and velocity shifts of the fine-structure
components are tabulated. Applications to the spectra of gaseous
nebulae are discussed. Depending on the temperature, density and Case,
the centres of unresolved lines can shift by up to 0.9km/s for HI and
3.3km/s for HeII. A new calibration of the Hα-NII method for
determining electron temperatures is given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 15 Summary of components, and the reference
wavelengths of hydrogenic transitions
table2a.dat 64 7 Fine structure components for n-2 transitions
table2b.dat 64 13 Fine structure components for n-3 transitions
tab34.dat 66 652 Normalized component intensities
table5.dat 78 76 Line emissivities
table6.dat 77 76 Line centre positions
table7.dat 33 23 Hα full line widths and broadening
terms δ
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See also:
VI/64 : Recombination line intensities for hydrogenic ions (Storey+ 1995)
J/A+AS/133/257 : Recombination coefficients for NeII lines (Kisielius+ 1998)
J/A+AS/137/157 : O III recombination coefficients (Kisielius+, 1999)
J/A+AS/142/85 : Recombination coefficients for C II lines (Davey+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2 I1 --- nu [2/6] Upper state principal quantum number
6 I1 --- nl [1/5] Lower state principal quantum number
11- 12 I2 --- Nc [2/25] Number of components
16- 19 F4.2 km/s D(v)HI [0/10] Total range in velocity space of
components for HI lines
22- 26 F5.2 km/s D(v)HeII [0/37] Total range in velocity space of
components for HeII lines
29- 38 F10.4 0.1nm 1HI Reference wavelength for 1HI (Å)
41- 50 F10.4 0.1nm 2HI Reference wavelength for 2HI (Å)
53- 62 F10.4 0.1nm 3HeII Reference wavelength for 3HeII (Å)
65- 74 F10.4 0.1nm 4HeII Reference wavelength for 4HeII (Å)
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Byte-by-byte Description of file: table2[ab].dat
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Bytes Format Units Label Explanations
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2- 3 I2 --- Index [1/13] Index of transition
7- 8 A2 --- Statu Upper state nl in spectroscopic notation
12 I1 --- Su [2] 2S+1 of upper state term
15 A1 --- Lu L (spectroscopic) of upper state term
18 I1 --- Pu Parity (0 for even, 1 for odd) of upper state term
21- 23 F3.1 --- Ju [0.5/3.5] J of upper state term
29- 30 A2 --- Statl Lower state nl in spectroscopic notation
34 I1 --- Sl [2] 2S+1 of lower state term
37 A1 --- Ll L (spectroscopic) of lower state term
40 I1 --- Pl Parity (0 for even, 1 for odd) of lower state term
43- 45 F3.1 --- Jl [0.5/2.5] J of lower state term
49 I1 --- lu [0/3] Orbital quantum number l of upper state
54 I1 --- 2ju [1/7] Double total quantum number 2j of upper state
59 I1 --- ll [0/2] Orbital quantum number l of lower state
64 I1 --- 2jl [1/5] Double total quantum number 2j of lower state
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Byte-by-byte Description of file: tab34.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Comp Component (1)
7 A1 --- Case [AB] Baker & Menzel (1938ApJ....88...52B 1938ApJ....88...52B) case
10- 14 E5.1 cm-3 Ne Electron density
17- 18 I2 --- Index [1/13] Transition index
23- 28 F6.3 0.1nm D(lambda) [-0.48/0.07] Shift in wavelength (Å)
30- 35 F6.2 km/s D(v) [-32/5] Shift in velocity
37- 41 F5.3 --- I300 ? Normalized component intensity at Te=300K
43- 47 F5.3 --- I1000 Normalized component intensity at Te=1000K
49- 53 F5.3 --- I3000 Normalized component intensity at Te=3000K
55- 59 F5.3 --- I10000 Normalized component intensity at Te=10000K
61- 65 F5.3 --- I30000 Normalized component intensity at Te=30000K
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Note (1): Reference wavelengths are:
(Hα) H3-2 = 6562.8812Å
(Hβ) H4-2 = 4861.3784Å
(Hγ) H5-2 = 4340.5086Å
He3-2 = 1640.5055Å
He4-2 = 1215.1893Å
He4-3 = 4685.8471Å
He5-3 = 3203.1867Å
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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- 4 A4 --- Comp Component (HI or HeII)
6 A1 --- Case [AB] Baker & Menzel (1938ApJ....88...52B 1938ApJ....88...52B) case
9 I1 --- nu [3/5] Upper state principal quantum number
12 A1 --- --- [-]
15 I1 --- nl [2/3] Lower state principal quantum number
18- 22 E5.1 cm-3 Ne Electron density
25- 33 E9.3 mW/m2/cm I300 ? Line emissivity at Te=300K
36- 44 E9.3 mW/m2/cm I1000 Line emissivity at Te=1000K
47- 55 E9.3 mW/m2/cm I3000 Line emissivity at Te=3000K
58- 66 E9.3 mW/m2/cm I10000 Line emissivity at Te=10000K
69- 77 E9.3 mW/m2/cm I30000 Line emissivity at Te=30000K
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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- 4 A4 --- Comp Component (HI or HeII)
6 A1 --- Case [AB] Baker & Menzel (1938ApJ....88...52B 1938ApJ....88...52B) case
9 I1 --- nu [3/5] Upper state principal quantum number
12 A1 --- --- [-]
15 I1 --- nl [2/3] Lower state principal quantum number
18- 22 E5.1 cm-3 Ne Electron density
25- 33 F9.4 0.1nm I300 ? Line centre positions at Te=300K
36- 44 F9.4 0.1nm I1000 Line centre positions at Te=1000K
47- 55 F9.4 0.1nm I3000 Line centre positions at Te=3000K
58- 66 F9.4 0.1nm I10000 Line centre positions at Te=10000K
69- 77 F9.4 0.1nm I30000 Line centre positions at Te=30000K
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 km/s vbroad Full line width at half maximum excluding
fine-structure effects
8- 13 F6.2 km/s FWHM Full line width at half maximum including
fine-structure effects
17- 22 F6.3 km/s delta Broadening term δ
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Acknowledgements: Romas Kisielius
(End) Patricia Bauer [CDS] 17-Nov-1998