J/A+A/624/A60 Atomic data for unblended lines in FGK stars (Laverick+, 2019)
The Belgian repository of fundamental atomic data and stellar spectra (BRASS).
II. Quality assessment of atomic data for unblended lines in FGK stars.
Laverick M., Lobel A., Royer P., Merle T., Martayan C., van Hoof P. A. M.,
Van der Swaelmen M., David M., Hensberge H., Thienpont E.
<Astron. Astrophys. 624, A60 (2019)>
=2019A&A...624A..60L 2019A&A...624A..60L (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Equivalent widths ; Line Profiles
Keywords: stars: solar-type - line: profiles - atomic data -
astronomical databases: miscellaneous
Abstract:
Fundamental atomic transition parameters, such as oscillator strengths
and rest wavelengths, play a key role in modelling and understanding
the chemical composition of stars in the universe. Despite the
significant work under way to produce these parameters for many
astrophysically important ions, uncertainties in these parameters
remain large and can limit the accuracy of chemical abundance
determinations.
The Belgian repository of fundamental atomic data and stellar spectra
(BRASS) aims to provide a large systematic and homogeneous quality
assessment of the atomic data available for quantitative spectroscopy.
BRASS shall compare synthetic spectra against extremely high-quality
observed spectra, at a resolution of ∼85000 and signal-noise ratios of
∼1000, for approximately 20 bright BAFGK spectral-type stars, in order
to critically evaluate the atomic data available for over a thousand
potentially useful spectral lines.
A large-scale homogeneous selection of atomic lines is performed by
synthesising theoretical spectra of literature atomic lines for
FGK-type stars including the Sun, resulting in a selection of 1091
theoretically deep and unblended lines in the wavelength range
4200-6800Å, which may be suitable for quality assessment.
Astrophysical log(gf) values are determined for the 1091 transitions
using two commonly employed methods. The agreement of these log(gf)
values are used to select well-behaved lines for quality assessment.
We found 845 atomic lines to be suitable for quality assessment, of
which 408 were found to be robust against systematic differences
between analysis methods. Around 53% of the quality-assessed lines
were found to have at least one literature log(gf) value in
agreement with our derived values, though the remaining values can
disagree by as much as 0.5dex. Only ∼38% of FeI lines were found
to have sufficiently accurate log(gf) values, increasing to
∼70-75% for the remaining Fe-group lines.
Description:
Tables of log(gf) values and equivalent width values
measured/calculated/ determined for several solar-like stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 32 7 List of studied stars
tabled12.dat 123 1091 Individual log(gf) values per star per method
tablee1.dat 591 1091 Equivalent widths per star per log(gf) value
tablef1.dat 150 1091 Quality assessment results
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 11 I2 h RAh ? Right ascension (J2000)
13- 14 I2 min RAm ? Right ascension (J2000)
16- 20 F5.2 s RAs ? Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd ? Declination (J2000)
26- 27 I2 arcmin DEm ? Declination (J2000)
29- 32 F4.1 arcsec DEs ? Declination (J2000)
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Byte-by-byte Description of file: tabled12.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Line [1/1091] Internal line designation (1)
6- 10 F5.2 --- epseriCog ?=- Curve of growth log(gf) for eps Eri (2)
12- 16 F5.2 --- 70ophCog ?=- Curve of growth log(gf) for 70 Oph (2)
18- 22 F5.2 --- 70virCog ?=- Curve of growth log(gf) for 70 Vir (2)
24- 28 F5.2 --- sunCog ?=- Curve of growth log(gf) for Sun (2)
30- 34 F5.2 --- 51pegCog ?=- Curve of growth log(gf) for 51 Peg (2)
36- 40 F5.2 --- 10tauCog ?=- Curve of growth log(gf) for 10 Tau (2)
42- 46 F5.2 --- betcomCog ?=- Curve of growth log(gf) for beta Com (2)
48- 52 F5.2 --- epseriGrid grid method log(gf) value for eps Eri
54- 57 F4.2 --- e_epseriGrid grid method log(gf) error for eps Eri
59- 63 F5.2 --- 70ophGrid grid method log(gf) value for 70 Oph
65- 68 F4.2 --- e_70ophGrid grid method log(gf) error for 70 Oph
70- 74 F5.2 --- 70virGrid grid method log(gf) value for 70 Vir
76- 79 F4.2 --- e_70virGrid grid method log(gf) error for 70 Vir
81- 85 F5.2 --- sunGrid grid method log(gf) value for Sun
87- 90 F4.2 --- e_sunGrid grid method log(gf) error for Sun
92- 96 F5.2 --- 51pegGrid grid method log(gf) value for 51 Peg
98-101 F4.2 --- e_51pegGrid grid method log(gf) error for 51 Peg
103-107 F5.2 --- 10tauGrid grid method log(gf) value for 10 Tau
109-112 F4.2 --- e_10tauGrid grid method log(gf) error for 10 Tau
114-118 F5.2 --- betcomGrid grid method log(gf) value for beta Com
120-123 F4.2 --- e_betcomGrid grid method log(gf) error for beta Com
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Note (1): Additional plots and data can be found at the url:
brass.sdf.org/Gtypehtmls/graXXXX/ where XXXX is replaced with the
line number i.e. /gra1/ to /gra1091/
Note (2): --- values are present for lines with measured equivalent width values
that are smaller than 1mÅ or greater than 200mÅ.
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Byte-by-byte Description of file: tablee1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm Line [1/1091] Internal line designation (1)
6- 12 F7.2 0.1nm epseriMeas Measured EW of eps Eri
14- 18 F5.2 0.1nm epseriCorr ? Theoretical EW correction of eps Eri
to account for Voigt wings(2)
20- 25 F6.2 0.1nm epseriGrid Theoretical EW corresponding to grid
log(gf) value for eps Eri
27- 32 F6.2 0.1nm epseriCog Theoretical EW corresponding to curve
of growth log(gf) value for eps Eri
34- 39 F6.2 0.1nm epseriBrass Theoretical EW corresponding to BRASS
log(gf) value for eps Eri
41- 46 F6.2 0.1nm epseriNIST ? Theoretical EW corresponding to NIST
log(gf) value for eps Eri (3)
48- 53 F6.2 0.1nm epseriVALD ? Theoretical EW corresponding to VALD
log(gf) value for eps Eri (3)
55- 60 F6.2 0.1nm epserispWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for eps Eri (3)
62- 67 F6.2 0.1nm epserisp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for eps Eri (3)
69- 73 F5.2 0.1nm epseriChianti ? Theoretical EW corresponding to
chianti log(gf) value for eps Eri (3)
75- 80 F6.2 0.1nm epseriTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for eps Eri (3)
82- 87 F6.2 0.1nm epseriTopbase ? Theoretical EW corresponding to
topbase log(gf) value for eps Eri (3)
89- 95 F7.2 0.1nm 70ophMeas Measured EW of 70 Oph
97-101 F5.2 0.1nm 70ophCorr ? Theoretical EW correction of 70 Oph
to account for Voigt wings(2)
103-108 F6.2 0.1nm 70ophGrid Theoretical EW corresponding to grid
log(gf) value for 70 Oph
110-115 F6.2 0.1nm 70ophCog Theoretical EW corresponding to curve
of growth log(gf) value for 70 Oph
117-122 F6.2 0.1nm 70ophBrass Theoretical EW corresponding to BRASS
log(gf) value for 70 Oph
124-129 F6.2 0.1nm 70ophNIST ? Theoretical EW corresponding to NIST
log(gf) value for 70 Oph (3)
131-136 F6.2 0.1nm 70ophVALD ? Theoretical EW corresponding to VALD
log(gf) value for 70 Oph (3)
138-143 F6.2 0.1nm 70ophspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for 70 Oph (3)
145-150 F6.2 0.1nm 70ophsp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for 70 Oph (3)
152-156 F5.2 0.1nm 70ophChianti ? Theoretical EW corresponding to
chianti log(gf) value for 70 Oph (3)
158-163 F6.2 0.1nm 70ophTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for 70 Oph (3)
165-170 F6.2 0.1nm 70ophTopbase ? Theoretical EW corresponding to
topbase log(gf) value for 70 Oph (3)
172-178 f7.2 0.1nm 70virmeas Measured ew of 70 vir
180-184 F5.2 0.1nm 70virCorr ? Theoretical EW correction of 70 Vir
to account for Voigt wings(2)
186-191 F6.2 0.1nm 70virGrid Theoretical EW corresponding to grid
log(gf) value for 70 Vir
193-198 F6.2 0.1nm 70virCog Theoretical EW corresponding to curve
of growth log(gf) value for 70 Vir
200-205 F6.2 0.1nm 70virBrass Theoretical EW corresponding to BRASS
log(gf) value for 70 Vir
207-212 F6.2 0.1nm 70virNIST ? Theoretical EW corresponding to NIST
log(gf) value for 70 Vir (3)
214-219 F6.2 0.1nm 70virVALD ? Theoretical EW corresponding to VALD
log(gf) value for 70 Vir (3)
221-226 F6.2 0.1nm 70virspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for 70 Vir (3)
228-233 F6.2 0.1nm 70virsp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for 70 Vir (3)
235-239 F5.2 0.1nm 70virChianti ? Theoretical EW corresponding to
chianti log(gf) value for 70 Vir (3)
241-246 F6.2 0.1nm 70virTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for 70 Vir (3)
248-253 F6.2 0.1nm 70virTopbase ? Theoretical EW corresponding to
topbase log(gf) value for 70 Vir (3)
255-260 F6.2 0.1nm sunMeas Measured EW of sun
262-266 F5.2 0.1nm sunCorr ? Theoretical EW correction of sun
to account for Voigt wings(2)
268-274 F7.2 0.1nm sunGrid Theoretical EW corresponding to grid
log(gf) value for Sun
276-282 F7.2 0.1nm sunCog Theoretical EW corresponding to curve
of growth log(gf) value for Sun
284-290 F7.2 0.1nm sunBrass Theoretical EW corresponding to BRASS
log(gf) value for Sun
292-297 F6.2 0.1nm sunNIST ? Theoretical EW corresponding to NIST
log(gf) value for Sun (3)
299-305 F7.2 0.1nm sunVALD ? Theoretical EW corresponding to VALD
log(gf) value for Sun (3)
307-313 F7.2 0.1nm sunspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for Sun (3)
315-320 F6.2 0.1nm sunsp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for Sun (3)
322-326 F5.2 0.1nm sunChianti ? Theoretical EW corresponding to
chianti log(gf) value for Sun (3)
328-333 F6.2 0.1nm sunTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for Sun (3)
335-340 F6.2 0.1nm sunTopbase ? Theoretical EW corresponding to
topbase log(gf) value for Sun (3)
342-348 F7.2 0.1nm 51pegMeas Measured EW of 51 Peg
350-354 F5.2 0.1nm 51pegCorr ? Theoretical EW correction of 51 Peg
to account for Voigt wings(2)
356-361 F6.2 0.1nm 51pegGrid Theoretical EW corresponding to grid
log(gf) value for 51 Peg
363-368 F6.2 0.1nm 51pegCog Theoretical EW corresponding to curve
of growth log(gf) value for 51 Peg
370-375 F6.2 0.1nm 51pegBrass Theoretical EW corresponding to BRASS
log(gf) value for 51 Peg
377-382 F6.2 0.1nm 51pegNIST ? Theoretical EW corresponding to NIST
log(gf) value for 51 Peg (3)
384-389 F6.2 0.1nm 51pegVALD ? Theoretical EW corresponding to VALD
log(gf) value for 51 Peg (3)
391-396 F6.2 0.1nm 51pegspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for 51 Peg (3)
398-403 F6.2 0.1nm 51pegsp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for 51 Peg (3)
405-409 F5.2 0.1nm 51pegChianti ? Theoretical EW corresponding to
chianti log(gf) value for 51 Peg (3)
411-416 F6.2 0.1nm 51pegTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for 51 Peg (3)
418-423 F6.2 0.1nm 51pegTopbase ? Theoretical EW corresponding to
topbase log(gf) value for 51 Peg (3)
425-431 F7.2 0.1nm 10tauMeas Measured EW of 10 Tau
433-437 F5.2 0.1nm 10tauCorr ? Theoretical EW correction of 10 Tau
to account for Voigt wings(2)
439-444 F6.2 0.1nm 10tauGrid Theoretical EW corresponding to grid
log(gf) value for 10 Tau
446-451 F6.2 0.1nm 10tauCog Theoretical EW corresponding to curve
of growth log(gf) value for 10 Tau
453-458 F6.2 0.1nm 10tauBrass Theoretical EW corresponding to BRASS
log(gf) value for 10 Tau
460-465 F6.2 0.1nm 10tauNIST ? Theoretical EW corresponding to NIST
log(gf) value for 10 Tau (3)
467-472 F6.2 0.1nm 10tauVALD ? Theoretical EW corresponding to VALD
log(gf) value for 10 Tau (3)
474-479 F6.2 0.1nm 10tauspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for 10 Tau (3)
481-486 F6.2 0.1nm 10tausp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for 10 Tau (3)
488-492 F5.2 0.1nm 10tauChianti ? Theoretical EW corresponding to
chianti log(gf) value for 10 Tau (3)
494-499 F6.2 0.1nm 10tauTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for 10 Tau (3)
501-506 F6.2 0.1nm 10tauTopbase ? Theoretical EW corresponding to
topbase log(gf) value for 10 Tau (3)
508-516 F9.2 0.1nm betcomMeas Measured EW of beta Com
518-522 F5.2 0.1nm betcomCorr ? Theoretical EW correction of beta Com
to account for Voigt wings(2)
524-529 F6.2 0.1nm betcomGrid Theoretical EW corresponding to grid
log(gf) value for beta Com
531-536 F6.2 0.1nm betcomCog Theoretical EW corresponding to curve
of growth log(gf) value for beta Com
538-543 F6.2 0.1nm betcomBrass Theoretical EW corresponding to BRASS
log(gf) value for beta Com
545-550 F6.2 0.1nm betcomNIST ? Theoretical EW corresponding to NIST
log(gf) value for beta Com (3)
552-557 F6.2 0.1nm betcomVALD ? Theoretical EW corresponding to VALD
log(gf) value for beta Com (3)
559-564 F6.2 0.1nm betcomspWEB ? Theoretical EW corresponding to
spectroweb log(gf) value for beta Com (3)
566-571 F6.2 0.1nm betcomsp3 ? Theoretical EW corresponding to
spectrw3 log(gf) value for beta Com (3)
573-577 F5.2 0.1nm betcomChianti ? Theoretical EW corresponding to
chianti log(gf) value for beta Com (3)
579-584 F6.2 0.1nm betcomTipbase ? Theoretical EW corresponding to
tipbase log(gf) value for beta Com (3)
586-591 F6.2 0.1nm betcomTopbase ? Theoretical EW corresponding to
topbase log(gf) value for beta Com (3)
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Note (1): Additional plots and data can be found at the url:
brass.sdf.org/Gtypehtmls/graXXXX/ where XXXX is replaced with the
line number i.e. /gra1/ to /gra1091/
Note (2): --- values are present for lines with measured equivalent width values
that are smaller than 1 milli-angstrom (mÅ) or greater than 200mÅ.
Note (3): a dash character "-" indicates that there is no corresponding log(gf)
value for a line, and thus a EW value could not be determined
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Byte-by-byte Description of file: tablef1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Line [1/1091] Internal line designation (1)
6- 7 A2 --- Elem Element of transition
9 I1 --- Ion Ionisation stage of element
11- 18 F8.3 0.1nm InputWave Input BRASS wavelength
20- 25 F6.3 0.1nm dwaveGrid Wavelength determined via grid method
27- 31 F5.3 0.1nm e_dwaveGrid Grid method wavelength uncertainty
33- 37 F5.3 eV Elow Lower energy level of transition
39- 43 F5.2 --- loggfCog Curve of growth method log(gf) value
45- 48 F4.2 --- e_loggfCog Curve of growth method log(gf) error
50- 54 F5.2 --- loggfGrid Grid method log(gf) value
56- 59 F4.2 --- e_loggfGrid Grid method log(gf) error
61 I1 --- Qual Quality assessment flag (2)
63 I1 --- AI Robust-to-systematics flag (3)
65- 69 F5.2 --- Paper1 log(gf) value of paper1
71- 73 I3 --- r_Paper1 Reference of paper1 log(gf) value
75- 79 A5 --- NIST log(gf) value of nist (4)
81- 83 A3 --- r_NIST Reference of nist log(gf) value (4)
85- 89 A5 --- spWEB log(gf) value of spectroweb (4)
91 A1 --- r_spWEB Reference of spectroweb log(gf) value (4)
93- 97 A5 --- VALD log(gf) value of vald (4)
99-101 A3 --- r_VALD Reference of vald log(gf) value (4)
103-107 A5 --- sp3 log(gf) value of spectrw3 (4)
109-110 A2 --- r_sp3 Reference of spectrw3 log(gf) value (4)
112-116 A5 --- CHIANTI log(gf) value of chianti (4)
118-120 A3 --- r_CHIANTI Reference of chianti log(gf) value (4)
122-126 A5 --- Tipbase log(gf) value of tipbase (4)
128 A1 --- r_Tipbase Reference of tipbase log(gf) value (4)
130-134 A5 --- Topbase log(gf) value of topbase (4)
136-137 A2 --- r_Topbase Reference of topbase log(gf) value (4)
139-150 A12 --- RecomLit Reference numbers of recommended
literature log(gf) values (5)
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Note (1): Additional plots and data can be found at the url:
brass.sdf.org/Gtypehtmls/graXXXX/ where XXXX is replaced with the
line number i.e. /gra1/ to /gra1091/
Note (2): Boolean flag. If line is quality-assessable (i.e. the loggfCog and
loggfGrid have overlapping error-bars) then the flag is 1.
Note (3): Boolean flag. If line is robust against systematic blending errors
(i.e. the loggfCog and loggfGrid are within 0.04 dex of each other)
then the flag is 1.
Note (4): a dash character "-" indicates that there is no corresponding log(gf)
value for a line, and thus no log(gf) or reference is available
Note (5): a list of comma-separated numbers pertaining to reference flags. A
reference is recommended if it is in the range: loggfGrid plus
or minus e_loggfGrid. If the line is not quality-assessable
(i.e. the Qual flag is zero) then this column only contains an X.
If the line is quality-assessable, but there is no literature within
error of the log(gf) grid value, then this column will contain a dash.
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Acknowledgements:
Mike Laverick, mike.laverick(at)kuleuven.be
References:
Laverick et al., Paper I 2018A&A...612A..60L 2018A&A...612A..60L
(End) Patricia Vannier [CDS] 26-Feb-2019