Access to Astronomical Catalogues

← Click to display the menu
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
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). 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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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)
Byte-by-byte Description of file: table2[ab].dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: tab34.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Comp Component (1) 7 A1 --- Case [AB] Baker & Menzel (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
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
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Comp Component (HI or HeII) 6 A1 --- Case [AB] Baker & Menzel (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
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Comp Component (HI or HeII) 6 A1 --- Case [AB] Baker & Menzel (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
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
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
Acknowledgements: Romas Kisielius
(End) Patricia Bauer [CDS] 17-Nov-1998
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact