J/A+A/520/A57 New FeII energy levels from stellar spectra (Castelli+, 2010)
New Fe II energy levels from stellar spectra.
Castelli F., Kurucz R.L.
<Astron. Astrophys. 520, A57 (2010)>
=2010A&A...520A..57C 2010A&A...520A..57C
ADC_Keywords: Atomic physics ; Line Profiles ; Models, atmosphere ;
Spectroscopy ; Stars, peculiar
Keywords: line: identification - atomic data - stars: atmospheres -
stars: chemically peculiar - stars: individual: HR 6000
Abstract:
The spectra of B-type and early A-type stars show numerous
unidentified lines in the whole optical range, especially in the
5100-5400Å interval. Because FeII transitions to high energy levels
should be observed in this region, we used semiempirical predicted
wavelengths and gf-values of FeII to identify unknown lines.
Semiempirical line data for FeII computed by Kurucz are used to
synthesize the spectrum of the slow-rotating, Fe - overabundant CP
star HR6000.
Description:
FeII lines in the 3800-8000Å region, produced by transitions to
the FeII subconfigurations (3P)4f, (3H)4f, (3F)4f, and (3G)4f
are given in Tables 6, 7, 8, and 9, respectively. Only lines with
loggf≥-1.5 are listed. Most of these lines can be observed in the
UVES spectrum of HR 6000 and have allowed us to identify more than
50% of the previously unidentified lines (Castelli & Hubrig,
2007A&A...475.1041C 2007A&A...475.1041C).
Objects:
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RA (2000) DE Designation(s)
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16 08 34.563 -39 05 34.28 HD 144667 = HR 6000
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 116 99 FeII lines in the 3800-8000Å region with
loggf≥-1.5 and 3d6(3P)4f energy levels
as upper levels
table7.dat 117 488 FeII lines in the 3800-8000Å region with
loggf≥-1.5 and 3d6(3H)4f energy levels
as upper levels
table8.dat 128 372 FeII lines in the 3800-8000Å region with
loggf≥-1.5 and 3d6(3F)4f energy levels
as upper levels
table9.dat 115 261 FeII lines in the 3800-8000Å region with
loggf≥-1.5 and 3d6(3G)4f energy levels
as upper levels
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See also:
J/A+AS/102/607 : Stark widths of FeII lines (Puric+ 1993)
J/A+A/293/953 : IRON project VI. FeII collision strengths (Zhang+, 1995)
J/A+A/293/967 : IRON Project VII. FeII radiative transitions (Nahar, 1995)
J/A+A/475/765 : Fine structure forbidden lines in FeII (Ramsbottom+, 2007)
Byte-by-byte Description of file: table?.dat
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Bytes Format Units Label Explanations
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1- 10 F10.3 cm-1 EU Upper level energy
12- 19 A8 --- LevelU Upper level
21- 24 A4 ---- NameU Upper level designation (N[N])
26- 29 A4 --- JU Upper level J value
31- 40 F10.3 cm-1 EL Lower level energy
42- 62 A21 --- ConfL Lower level configuration
64- 71 F8.3 0.1nm lambdaC Calculated wavelength
73- 78 F6.3 --- loggf Oscillator strength
80- 87 F8.3 0.1nm lambdaO ? Observed wavelength
88 A1 --- u_lambdaO [?] Uncertainty flag on lambdaO
90-128 A39 --- Notes Notes
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Acknowledgements:
Fiorella Castelli, castelli(at)oats.inaf.it
(End) Patricia Vannier [CDS] 08-Jul-2010