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. =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 3d^4^, 3d^3^ns (n=4,5,6), 3d^3^np, and 3d^3^nd (n=4,5), 3d^3^4f, 3d^2^4s^2^, and 3d^2^4s4p. 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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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 200050%. Note (8): Code for reference to transition probability value of line as follows: 88MAR = Martin et al. (1988atps.book.....M); 89BIE = Biemont et al. (1989A&A...209..391B); 14WOO = Wood et al. (2014, J/ApJS/214/18); 15BOU = Bouazza et al (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); 88IGL = Iglesias et al. (1988, Publ. Inst. Opt. Madrid 47 1); 89BIE = Biemont et al. (1989A&A...209..391B); 13THO = Thorne et al. (2013, J/ApJS/207/13); TW = This work. Ritz wavelengths calculated from the energy levels. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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). 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 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Sep-2017