J/ApJS/207/20 Parity-forbidden [Co II] and [V II] lines (Ruffoni+, 2013)
Accurate Ritz wavelengths of parity-forbidden [Co II] and [V II] lines of
astrophysical interest.
Ruffoni M.P., Pickering J.C.
<Astrophys. J. Suppl. Ser., 207, 20 (2013)>
=2013ApJS..207...20R 2013ApJS..207...20R
ADC_Keywords: Atomic physics ; Line Profiles ; Spectroscopy
Keywords: atomic data - line: profiles - methods: laboratory -
techniques: spectroscopic
Abstract:
We report a comprehensive list of accurate Ritz wavelengths for
parity-forbidden [Co II] and [V II] lines obtained from the analysis
of energy levels measured in the laboratory with Fourier transform
emission spectroscopy. Such lines, particularly those in the infrared,
are in demand for the analysis of low-density astrophysical plasmas in
and around objects such as planetary nebulae, star-forming regions,
and active galactic nuclei. Transitions between all known metastable
levels of Co II and V II are included in our analysis, producing
wavelengths for 1477 [V II] lines and 782 [Co II] lines. Of these, 170
[V II] lines and 171 [Co II] lines arise from transitions with
calculated transition probabilities greater than 1x10-2/s and upper
level excitations of less than 5 eV, and thus are likely to be
observed in astrophysical spectra.
Description:
The Ritz wavelengths of the parity-forbidden [Co II] and [V II]
lines reported here were calculated, respectively, from the accurate
Co II energy levels reported by Pickering et al.
(1998ApJS..117..261P 1998ApJS..117..261P) and the revised accurate V II energy levels
measured by Thorne et al. (2013, Cat. J/ApJS/207/13).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 101 170 Parity-forbidden lines in VII with a transition
probability of at least 1x10-2/s and upper level
excitation less than 5eV
table3.dat 101 171 Parity-forbidden lines in CoII with a transition
probability of at least 1x10-2/s and upper level
excitation less than 5eV
table4.dat 101 1307 Parity-forbidden lines in VII with a transition
probability less than 1x10-2/s and upper level
excitation greater than 5eV
table5.dat 101 611 Parity-forbidden lines in CoII with a transition
probability less than 1x10-2/s and upper level
excitation greater than 5eV
--------------------------------------------------------------------------------
See also:
J/ApJS/207/13 : The spectrum and term analysis of V II (Thorne+, 2013)
J/A+AS/130/541 : Co II oscillator strengths (Raassen+ 1998)
J/A+AS/129/147 : Co II radiative transition probabilities (Quinet 1998)
Byte-by-byte Description of file: table[2345].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.3 cm-1 sigma [4/44200] Wavenumber
11- 15 F5.3 cm-1 e_sigma Uncertainty in sigma
17- 29 F13.4 0.1nm sig.0 Vacuum wavelength; Angstroms
31- 40 F10.4 0.1nm e_sig.0 Uncertainty in sig.0
42- 54 F13.4 0.1nm sig.1 Air wavelength; Angstroms (1)
56- 63 A8 --- Tr0 Lower level transition
65- 72 A8 --- Tr1 Upper level transition
74- 78 I5 cm-1 E0 Lower level energy (2)
80- 84 I5 cm-1 E1 Upper level energy (2)
86- 93 E8.3 s-1 A ? Transition probability (3)
95 A1 --- f_A Flag on A (4)
97-101 A5 --- Type Transition type (E1, E2, M1) (5)
--------------------------------------------------------------------------------
Note (1): Calculated using Birch & Downs (1994Metro..31..315B 1994Metro..31..315B) for
λ>7500 Angstroms, and Bonsch and Potulski (1998Metro..35..133B 1998Metro..35..133B)
for all other cases.
Note (2): Truncated energy. For the exact value, see
* Thorne et al. (2013ApJS..207...13T 2013ApJS..207...13T) for tables 2 and 4 (V II);
* for tables 3 and 5 (Co II): scale the energies given in Pickering et al.
(1998ApJS..117..261P 1998ApJS..117..261P) by 7 parts in 108.
Note (3):
* for tables 2 and 4: Calculated transition probabilities derived from the
log(gA) values given by Kurucz (2006, http://kurucz.harvard.edu/atoms/2701/)
* for table3: taken from Raassen et al. (1998, Cat. J/A+AS/130/541)
* for table5: calculated transition probabilities of 10-3 or greater
were taken from Raassen et al. (1998, Cat. J/A+AS/130/541) unless flagged.
Values less than 10-3 were derived from the log(gA) values given by
Kurucz (2006, http://kurucz.harvard.edu/atoms/2701/) or values left blank.
Note (4): Flag as follows:
* = Line not given by Raassen et al. (1998, Cat. J/A+AS/130/541), so
the A value shown is from Quinet (1998, Cat. J/A+AS/129/147).
q = Transition probability greater than 10-3 taken from Quinet (1998,
Cat. J/A+AS/129/147).
d = Transition probability greater than 10-3 derived from the log(gA)
values given by Kurucz (2006, http://kurucz.harvard.edu/atoms/2701/).
Note (5): Transition rules for allowed E1 transitions and parity-forbidden
M1 and E2 transitions:
----------------------------------------------------------------------------
Transition Parity ΔJ Restrictions
----------------------------------------------------------------------------
E1 Changes 0, +or-1 (0←/->0)
M1 No change 0, +or-1 (0←/->0)
E2 No change 0, +or-1, +or-2 (0←/->0, 1/2←/->1/2, 0←/->1)
----------------------------------------------------------------------------
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 05-Sep-2013