J/ApJS/231/19 Energy levels of ionized vanadium (V II) (Saloman+, 2017)
Critically evaluated energy levels, spectral lines, transition probabilities,
and intensities of singly ionized vanadium (V II).
Saloman E.B., Kramida A.
<Astrophys. J. Suppl. Ser., 231, 19-19 (2017)>
=2017ApJS..231...19S 2017ApJS..231...19S (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data; line: identification; methods: data analysis
Abstract:
The energy levels, observed spectral lines, and transition
probabilities of singly ionized vanadium, V II, have been compiled.
The experimentally derived energy levels belong to the configurations
3d4, 3d3ns (n=4,5,6), 3d3np, and 3d3nd (n=4,5), 3d34f,
3d24s2, and 3d24s4p. Also included are values for some forbidden
lines that may be of interest to the astrophysical community.
Experimental Lande g-factors and leading percentages for the levels
are included when available, as well as Ritz wavelengths calculated
from the energy levels. Wavelengths and transition probabilities are
reported for 3568 and 1896 transitions, respectively. From the list of
observed wavelengths, 407 energy levels are determined. The observed
intensities, normalized to a common scale, are provided. From the
newly optimized energy levels, a revised value for the ionization
energy is derived, 118,030(60)cm-1, corresponding to 14.634(7)eV.
This is 130cm-1 higher than the previously recommended value from
Iglesias+ (1988, Publ. Inst. Opt. Madrid 47 1).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 231 3568 Spectral lines of singly-ionized vanadium (V II)
table3.dat 138 408 Energy levels of singly-ionized vanadium (V II)
table6.dat 91 5256 Least-squares fitting parameters for singly-ionized
vanadium (V II)
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See also:
J/ApJS/207/20 : Parity-forbidden [Co II] and [V II] lines (Ruffoni+, 2013)
J/ApJS/207/13 : The spectrum and term analysis of V II (Thorne+, 2013)
J/ApJS/214/18 : VII log(gf) values, and V abundance in HD 84937 (Wood+ 2014)
J/ApJS/231/18 : Energy levels & spectral lines of V I (Saloman+, 2017)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- Iobs [1/1600000]? Relative observed intensity (1)
10- 17 A8 --- Ch Line description characters (2)
19- 28 F10.5 0.1nm WLobs [1102.6/9286.5]? Observed wavelength (3)
31- 37 F7.5 0.1nm e_WLobs [0.0001/0.05]? Uncertainty in WLobs
41- 49 F9.3 cm-1 WNobs [10765.4/90688.7]? Observed wavenumber
52- 64 F13.5 0.1nm WLRitz [1102.6/]? Calculated (Ritz) wavelength (4)
66- 74 F9.5 0.1nm e_WLRitz [/300]? Uncertainty in WLRitz
77- 84 F8.5 0.1nm O-C [-0.05/0.2]? Difference between WLobs and WLRitz
86-105 A20 --- C1 Configuration of lower level
109-113 A5 --- T1 Term of lower level
116 I1 --- J1 [0/7] Angular momentum of lower level
119-138 A20 --- C2 Configuration of upper level
143-150 A8 --- T2 Term of upper level
152 I1 --- J2 [0/8] Angular momentum of upper level
156-158 I3 --- n1 [1/292] Index number of lower level (5)
162-164 I3 --- n2 [2/407] Index number of upper level (5)
169-178 F10.4 cm-1 Elo [0/80767.7] Energy of the lower level
182-191 F10.4 cm-1 Eup [36/94042] Energy of the upper level
195-199 A5 --- Type Type of transition (6)
203-211 E9.3 s-1 A ? Transition probability
213-214 A2 --- Acc Transition probability accuracy code (7)
219-223 A5 --- r_A Reference for transition probability value (8)
227-231 A5 --- r_Sp Reference for spectral line (9)
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Note (1): Observed intensity of line placed on a common scale (arbitrary units).
Note (2): Line description characters as follows:
bl = blended with another line that may affect wavelength and intensity;
bl(X) = line blended with line from atom or ion stage specified by X;
D = double line;
h = hazy line;
H = very hazy line;
m = masked by another line;
m(X) = masked by a line from an atom specified by X;
s = line shaded to shorter wavelengths;
* = intensity shared by two or more lines;
: = the value given in the WLobs column is a rounded Ritz
value (observed wavelength was not reported);
? = observation of this line is questionable.
Note (3): Wavelength observed (Angstroms). Wavelength in standard air
for 2000<WL_obs<20000Angstroms, in vacuum otherwise.
Conversion between air and vacuum was made with the five-parameter
formula from Peck & Reeder (1972JOSA...62..958P 1972JOSA...62..958P).
Note (4): Wavelength calculated from the energy levels (Angstroms).
Wavelengths in vacuum above 50000cm-1 and below 5000cm-1.
All the rest are in standard air.
Note (5): Index numbers for lower and upper levels are those given in the last
column of the energy level table.
Note (6): Transition type
blank = electric dipole;
M1 = magnetic dipole;
E2 = electric quadrupole;
M1+E2 = mixed type.
Note (7): Uncertainty of value of A indicated by accuracy code:
A+ = ≤2%;
A = ≤3%,
B+ = ≤7%;
B = ≤10%;
C+ = ≤18%;
C = ≤25%;
D+ = ≤40%;
D = ≤50%;
E = >50%.
Note (8): Code for reference to transition probability value of line as follows:
88MAR = Martin et al. (1988atps.book.....M 1988atps.book.....M);
89BIE = Biemont et al. (1989A&A...209..391B 1989A&A...209..391B);
14WOO = Wood et al. (2014, J/ApJS/214/18);
15BOU = Bouazza et al (2015JQSRT.166...55B 2015JQSRT.166...55B);
TW = This work.
Note (9): Code for reference to wavelength of line as follows:
40MEG = Meggers & Moore (1940, JRNBS, 25, 83;
http://dx.doi.org/10.6028/jres.025.037);
86KAR = Karamatskos et al. (1986ZPhyD...3..391K 1986ZPhyD...3..391K);
88IGL = Iglesias et al. (1988, Publ. Inst. Opt. Madrid 47 1);
89BIE = Biemont et al. (1989A&A...209..391B 1989A&A...209..391B);
13THO = Thorne et al. (2013, J/ApJS/207/13);
TW = This work. Ritz wavelengths calculated from the energy levels.
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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- 11 F11.4 cm-1 E [0/118030] Excitation energy from the ground state
15- 21 F7.4 cm-1 e_E [0.0006/60] Uncertainty in E (1)
23- 24 I2 --- Nl [1/64]? Number of connecting lines (2)
31- 50 A20 --- Conf Configuration (3)
53- 60 A8 --- Term ? Term of Configuration corresponding
to this level (3)
62 I1 --- J [0/8]? Total angular momentum of this level
67- 69 I3 --- Perc [12/100]? Percentage of Config and Term in the
eigenvector of this level
75- 76 I2 --- Perc2 [5/48]? Percentage of Config_2 and Term_2 in the
eigenvector of this level
83-102 A20 --- Conf2 ? Configuration 2 (4)
105-112 A8 --- Term2 ? Term of Config_2 (4)
113-116 F4.2 --- Landeg [0.2/2.4]? The Lande g factors quoted from the
previous compilation of
Sugar & Corliss 1985aeli.k.....S
117 A1 --- f_Landeg [?] Uncertainty flag on Landeg
121-126 F6.3 cm-1 diffE [-0.06/1.2]? Change from energy reported by
Thorne+ 2013, J/ApJS/207/13
128-130 A3 --- Notes ? Notes (5)
136-138 I3 --- Ind [1/408] Sequential index number for the level used
in the line table (Table 2)
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Note (1): Uncertainty D1 of the energy as reported by the LOPT code, which
approximately corresponds to the minimum uncertainty of separation
from other levels connected to the given one by observed transitions.
For the exact definition of D1, see Kramida (2011CoPhC.182..419K 2011CoPhC.182..419K).
To determine the uncertainty of excitation energies from the ground
level, these values should be combined in quadrature with the
uncertainty of the ground level, 0.003cm-1.
Note (2): Number of connecting lines used in the least squares fit for this
level with LOPT.
Note (3): Configuration and term of the leading component of the eigenvector,
except when the second or third components are used in cases when it
is necessary to preserve the uniqueness of the designation of the
level.
Note (4): Configuration and term of the second leading component of the
eigenvector, except when the first component is used in cases when it
necessary to preserve the uniqueness of the designation of the level.
Note (5): Definition of notes:
? = questionable identification;
CD = Changed designation compared to Thorne+, 2013, J/ApJS/207/13
P2,P3 = Config and Term labels correspond to 2nd or 3rd percentage
component, respectively
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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 A1 --- P Parity of the configurations
(e=even; o=odd)
8- 29 A22 --- Conf Configuration(s) for that parameter
33- 48 A16 --- Param Parameter determined in the least-square
fitting procedure
50- 57 F8.1 cm-1 LSF [-12110.7/247397] Parameter value determined
in the least-square fitting procedure
62- 65 I4 cm-1 LSFsig [-424/2110]? Standard deviation of
the least-squares fitting
66 A1 --- f_LSFsig f="fixed" if the parameter was not varied
71- 72 I2 --- Group [1/23]? Parameters in each numbered group are
linked together in the fitting procedure
74- 81 F8.1 cm-1 HF [-15138.4/219143]? Hartree-Fock value for
the parameter
86- 91 F6.4 --- LSF/HF [0.4/4.6]? Ratio of the LSF value to
the Hartree-Fock value of the parameter
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Sep-2017