J/A+A/577/A6 GaIV, GaV, and GaVI oscillator strengths (Rauch+, 2015)
Stellar laboratories.
IV. New Ga IV, Ga V, and Ga VI oscillator strengths and the gallium abundance
in the hot white dwarfs G191-B2B and RE0503-289.
Rauch T., Werner K., Quinet P., Kruk J.W.
<Astron. Astrophys. 577, A6 (2015)>
=2015A&A...577A...6R 2015A&A...577A...6R
ADC_Keywords: Atomic physics
Keywords: atomic data - line: identification - stars: abundances -
stars: individual: G191-B2B - stars: individual: RE0503-289 -
virtual observatory tools
Abstract:
For the spectral analysis of high-resolution and high-signal-to-noise
(S/N) spectra of hot stars, advanced non-local thermodynamic
equilibrium (NLTE) model atmospheres are mandatory. These atmospheres
are strongly dependent on the reliability of the atomic data that are
used to calculate them.
Reliable Ga IV-VI oscillator strengths are used to identify Ga lines
in the spectra of the DA-type white dwarf G191-B2B and the DO-type
white dwarf RE 0503-289 and to determine their photospheric Ga
abundances.
We newly calculated Ga IV-VI oscillator strengths to consider their
radiative and collisional bound-bound transitions in detail in our
NLTE stellar-atmosphere models for analyzing of Ga lines exhibited in
high-resolution and high-S/N UV observations of G191-B2B and
RE 0503-289.
Description:
Table7 contains calculated HFR oscillator strengths (log gf) and
transition probabilities (gA, in 1/s) in GaIV. CF is the cancellation
factor as defined by Cowan (1981). In columns 3 and 6, e is written
for even and o for odd.
Table 8 contains calculated HFR oscillator strengths (log gf) and
transition probabilities (gA, in 1/s) in GaV. CF is the cancellation
factor as defined by Cowan (1981). In columns 3 and 6, e is written
for even and o for odd.
Table 9 contains calculated HFR oscillator strengths (log gf) and
transition probabilities (gA, in 1/s) in GaVI. CF is the cancellation
factor as defined by Cowan (1981). In columns 3 and 6, e is written
for even and o for odd.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 76 3198 Data for GaIV
table8.dat 76 517 Data for GaV
table9.dat 76 1914 Data for GaVI
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See also:
J/A+A/546/A55 : Ge V and Ge VI oscillator strengths (Rauch+, 2012)
J/A+A/564/A41 : Zn IV and Zn V oscillator strengths (Rauch+, 2014)
J/A+A/566/A10 : Ba V, Ba VI, and Ba VII oscillator strengths (Rauch+, 2014)
Byte-by-byte Description of file: table7.dat table8.dat table9.dat
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Bytes Format Units Label Explanations
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5- 12 F8.3 0.1nm lambda Wavelength λ
18- 23 I6 cm-1 E0 [0/450795] Lower level, energy
25 A1 --- P0 [o/e] Lower level, parity
28- 30 F3.1 --- J0 [0/6] Lower level, angular momentum quantum
number J
36- 41 I6 cm-1 E1 [224243/597358] Upper level, energy
43 A1 --- P1 [o/e] Upper level, parity
46- 48 F3.1 --- J1 [0/7] Upper level, angular momentum quantum
number J
52- 56 F5.2 [-] loggf [-4/5.5] Calculated HFR (Hartree-Fock) log(gf)
value (1)
60- 67 E8.3 s-1 gA [8e+3/3e+11] gA value (2)
71- 76 F6.3 --- CF [-1/1] CF cancellation factor (3)
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Note (1): gf value defined as:
g: statistical weight of the lower level
f: oscillator strength
Note (2): gA value defined as:
g: statistical weight of the upper level
A: transition probability
Note (3): as defined by Cowan, R. D. 1981, "The theory of atomic structure
and spectra" (Berkeley, CA, University of California Press)
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Acknowledgements:
Thomas Rauch, rauch(at)astro.uni-tuebingen.de
References:
Cowan, R. D. 1981, The theory of atomic structure and spectra
(Berkeley, CA, University of California Press)
Rauch et al., Paper I 2012A&A...546A..55R 2012A&A...546A..55R, Cat. J/A+A/546/A55
Rauch et al., Paper II 2014A&A...564A..41R 2014A&A...564A..41R, Cat. J/A+A/564/A41
Rauch et al., Paper III 2014A&A...566A..10R 2014A&A...566A..10R, Cat. J/A+A/566/A10
(End) Patricia Vannier [CDS] 30-Jan-2015