J/A+A/566/A10 Ba V, Ba VI, and Ba VII oscillator strengths (Rauch+, 2014)
Stellar laboratories.
III. New Ba V, Ba VI, and Ba VII oscillator strengths and the barium abundance
in the hot white dwarfs G 191-B2B and RE 0503-289.
Rauch T., Werner K., Quinet P., Kruk J.W.
<Astron. Astrophys. 566, A10 (2014)>
=2014A&A...566A..10R 2014A&A...566A..10R
ADC_Keywords: Atomic physics
Keywords: atomic data - line: identification - stars: abundances -
stars: individual: G 191-B2B - stars: individual: RE 0503-289 -
virtual observatory tools
Abstract:
For the spectral analysis of high-resolution and high-signal-to-noise
(S/N) spectra of hot stars, state-of-the-art non-local thermodynamic
equilibrium (NLTE) model atmospheres are mandatory. These are strongly
dependent on the reliability of the atomic data that is used for their
calculation.
Reliable Ba V-VII oscillator strengths are used to identify Ba 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 Ba
abundances.
We newly calculated Ba V-VII oscillator strengths to consider their
radiative and collisional bound-bound transitions in detail in our
NLTE stellar-atmosphere models for the analysis of Ba lines exhibited
in high-resolution and high-S/N UV observations of G191-B2B and
RE 0503-289.
Description:
table1.dat contains calculated HFR oscillator strengths (loggf) and
transition probabilities (gA, in 1/s) in Ba V. CF is the cancellation
factor as defined by Cowan (1981). In columns 3 and 6, e is written
for even and o for odd.
table2.dat contains calculated HFR oscillator strengths (loggf) and
transition probabilities (gA, in 1/s) in Ba VI. CF is the cancellation
factor as defined by Cowan (1981). In columns 3 and 6, e is written
for even and o for odd.
table3.dat contains calculated HFR oscillator strengths (loggf) and
transition probabilities (gA, in 1/s) in Ba VII. 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
table1.dat 76 981 Data for Ba V
table2.dat 76 162 Data for Ba VI
table3.dat 76 493 Data for Ba VII
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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)
Byte-by-byte Description of file: table1.dat table2.dat table3.dat
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Bytes Format Units Label Explanations
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3- 12 F10.3 0.1nm lambda [312/115309] Wavelength λ
18- 23 I6 cm-1 E0 Lower level, energy
25 A1 --- P0 [o/e] Lower level, parity (odd/even)
28- 30 F3.1 --- J0 [0/5] Lower level, angular momentum quantum
number j
36- 41 I6 cm-1 E1 Upper level, energy
43 A1 --- P1 [o/e] Upper level, parity (odd/even)
46- 48 F3.1 --- J1 [0/5] Upper level, angular momentum quantum
number J
52- 56 F5.2 --- loggf Calculated HRF log gf value (1)
60- 67 E8.3 s-1 loggA gA value (2)
71- 76 F6.3 --- CF cancellation factor as defined by Cowan (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): 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
(End) Patricia Vannier [CDS] 24-Apr-2014