J/A+A/564/A41 ZnIV and ZnV oscillator strengths (Rauch+, 2014)
Stellar laboratories. II. New Zn IV and Zn V oscillator strengths and their
validation in the hot white dwarfs G191-B2B and RE0503-289.
Rauch T., Werner K., Quinet P., Kruk J.W.
<Astron. Astrophys. 564, A41 (2014)>
=2014A&A...564A..41R 2014A&A...564A..41R
ADC_Keywords: Atomic physics
Keywords: atomic data - line: identification - stars: abundances -
stars: individual: G 191-B2B - virtual observatory tools -
stars: individual: RE 0503-289
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. In a recent analysis of the ultraviolet (UV) spectrum of
the DA-type white dwarf G191-B2B, 21 ZnIV lines were newly identified.
Because of the lack of ZnIV data, transition probabilities of the
isoelectronic GeVI were adapted for a first, coarse determination of
the photospheric Zn abundance.
Reliable ZnIV and ZnV oscillator strengths are used to improve the Zn
abundance determination and to identify more Zn lines in the spectra
of G191-B2B and the DO-type white dwarf RE 0503-289.
Description:
table1.dat contains calculated HFR oscillator strengths (log gf) and
transition probabilities (gA, in 1/s) in Zn IV. 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 (log gf) and
transition probabilities (gA, in 1/s) in Zn 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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 400 Data for ZnIV
table2.dat 76 1879 Data for ZnV
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See also:
J/A+A/546/A55 : Ge V and Ge VI oscillator strengths (Rauch+, 2012)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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4- 12 F9.3 0.1nm lambda [261/14514] Wavelength λ (Å)
18- 23 I6 cm-1 E0 Lower level, energy
25 A1 --- P0 [o/e] lower level, parity
28- 30 F3.1 --- J0 [0/6] Lower level angular momentum quantum number
36- 41 I6 cm-1 E1 Upper level, energy
43 A1 --- P1 [o/e] upper level, parity
46- 48 F3.1 --- J1 [0/7] Upper level angular momentum quantum number
52- 56 F5.2 --- loggf Calculated HFR log(gf) value (1)
60- 67 E8.3 s-1 gA gA value (2)
71- 76 F6.3 --- CF [-1/1] CF cancellation factor as defined by Cowan
(1981, The theory of atomic structure and spectra,
Los Alamos Series in Basic and Applied Sciences,
Berkeley: University of California Press)
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Note (1): gf value defined as:
g: statistical weight of the lower level and
f: oscillator strength
Note (2): gA value defined as:
g: statistical weight of the upper level and
A: transition probability
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Acknowledgements:
Thomas Rauch, rauch(at)astro.uni-tuebingen.de
References:
Rauch et al., Paper I 2012A&A...546A..55R 2012A&A...546A..55R, Cat. J/A+A/546/A55
History:
* 03-Apr-2014: on-line data
* 15-May-2014: loggA corrected into gA (from author)
(End) Patricia Vannier [CDS] 07-Mar-2014