ADC/CDS Standard Document for Catalog:/journal_tables/ApJS/94/221/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/ApJS/94/221 New multiplet table for FeI (Nave+, 1994)
================================================================================
A new multiplet table for FeI
Nave G., Johansson S., Learner R.C.M., Thorne A.P., Brault J.W.
<Astrophys. J. Suppl. Ser. 94, 221 (1994)>
=1994ApJS...94..221N (SIMBAD/NED Reference)
================================================================================
ADC_Keywords: Atomic physics
Keywords: atomic data - line: identification
Abstract:
We have recorded spectra of iron-neon and iron-argon hollow cathode
lamps in the region 1700A-5um (59,000-2000cm^-1^), with Fourier
transform (FT) spectrometers at the National Solar Observatory,
Tucson, Arizona, and Imperial College, London, UK, and with a
high-resolution grating spectrograph at the National Institute of
Standards and Technology, Gaithersburg, Maryland. The uncertainty of
the strongest lines in the FT spectra is less than 0.002cm^-1^
(0.2mA at 3000A; 8mA at 2um). Pressure- and current-dependent shifts
are less than 0.001cm^-1^ for transitions between low-lying levels,
increasing to 0.006cm^-1^ for transitions between the most highly
excited levels. We report 28 new energy levels of Fe I and revised
values of another 818 levels. We have identified 9501 lines as due to
9759 transitions in Fe I, and these are presented in the form of a new
multiplet table and finding list. This compares with the ~5500 lines
due to 467 energy levels in the multiplet tables of Moore (1950, NBS
Circ., No.488 and 1959, NBS Tech. note 30). The biggest increase is in
the near-ultraviolet and near infrared, and many of the new lines are
present in the solar spectrum. Experimental log (gf) values are
included where they are available. A further 125 unidentified lines
due to Fe I are given.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 47 846 Energy levels of FeI
table2.dat 131 9759 New multiplet table for FeI
table4.dat 26 9759 Finding list
table5.dat 27 125 Unidentified lines due to FeI
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Config Assigned configuration
17- 26 A10 --- Term Term, in order of lowest fine structure level
28 I1 --- J Level value
30 A1 --- n_J [*] '*' for 28 unpublished energy levels
32- 41 F10.3 cm-1 Level Energy level
44- 47 F4.3 cm-1 e_Level []? rms uncertainty on Level
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Num Multiplet number
6- 15 A10 --- Term1 First term designation
16 A1 --- n_Term1 Separation symbol '-'
17- 26 A10 --- Term2 Second term designation
28 I1 --- J1 First J value
29 A1 --- n_J1 Separation symbol '-'
30 I1 --- J2 Second J value
31- 36 A6 --- I Intensity of the line (1)
38- 47 F10.4 0.1nm Lvac Vacuum wavelength (2)
49- 58 F10.4 0.1nm Lair []? Air wavelength (3)
60- 65 F6.1 0.1pm Lo-R []? Difference between observed and Ritz
wavelengths (4)
66- 75 F10.3 cm-1 Sigma Measured wavenumber (5)
77 A1 --- q_Sigma [A-D] Quality of Sigma (6)
80- 83 I4 mK So-R []? Difference between observed and Ritz
wavenumbers (7)
85- 89 F5.3 eV El Excitation potential of lower level of
transition
91- 95 F5.3 eV Eu Excitation potential of upper level of
transition
97-105 F9.3 cm-1 Elc El in units of cm-1
107-115 F9.3 cm-1 Euc Eu in units of cm-1
117-122 F6.2 --- log(gf) []? Log of experimental gf values
124 A1 --- r_log(gf) [a-d] Source of log(gf) value (8)
127-131 A5 --- Blend Species of blended line (9)
--------------------------------------------------------------------------------
Note (1): Intensity in arbitrary units. These are given as log(I) to two
decimal places for FT spectra. Grating intensities are on a
different scale to the FT intensities, and are from the
continuous hollow cathode spectra, except those in parentheses,
which are from the pulsed hollow cathode. Symbols are:
d: diffuse; b: blended; *: unresolved; ?: questionable.
Note (2): Vacuum wavelength is derived from the measured wavenumber, Sigma.
Wavelengths measured in FT spectra are given to 4 decimal places
and those measured in grating spectra to 3 decimal places in the
UV. No grating spectra were recorded above 3250 A.
Note (3): Air wavelengths for all lines above 2000 A have been derived
from the wavenumbers using Edlen dispersion formula given as
equation 2 in the printed paper. See also note (2).
Note (4): Difference between observed wavelength and the Ritz wavelength
derived from the energy levels in table 1. This difference should
be subtracted from Lvac or Lair to obtain the Ritz wavelength.
Note (5): Wavenumbers measured in FT spectra are given to 3 decimal places
and those measured in grating spectra to 2 decimal places.
Note (6): Quality of measured wavenumber.
A: Uncertainty < 0.005 cm-1.
B: Uncertainty < 0.01 cm-1.
C: Uncertainty < 0.02 cm-1.
D: Uncertainty > 0.02 cm-1 or blended line
Wavelength uncertainties are given in table 3.
Note (7): Difference between observed wavenumber and the Ritz wavenumber
derived from the energy levels in table 1. This difference should
be subtracted from Sigma to obtain the Ritz wavenumber.
Note (8): Sources for log(gf) values are:
a: O'Brian et al., 1991, J. Opt. Soc. Am., B8, 1185
b: Fuhr et al., 1988, J. Phys. Chem. Ref. Data, 17, Suppl. 4
c: Meylan et al., 1993ApJS...85..163M
d: Johansson et al., 1994ApJ...429..419J
Note (9): Species of blended line:
I: Line blended with another Fe I transition
II: Line blended with Fe II transition
Ne: Line blended with Ne line
Ar: Line blended with Ar line
R: Line is self-reversed. Ritz wavelengths and wavenumber
are given.
M: Line is masked by another line of the given species.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 F10.4 0.1nm Lambda Vacuum (<2000A) or air (>2000A) wavelength
12- 20 F9.3 cm-1 Sigma Wavenumber
23- 26 A4 --- Num Multiplet number
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 F5.2 --- I Intensity
7- 16 F10.4 0.1nm Lambda Air wavelength
18- 27 F10.4 cm-1 Sigma Wavenumber
--------------------------------------------------------------------------------
Origin: AAS CD-ROM series, Volume 3, 1995
================================================================================
(End) Lee Brotzman [ADS] 10-Oct-94, Patricia Bauer [CDS] 16-Feb-1995