J/MNRAS/514/4958 16 Cyg and HD 219542 abundances (Ryabchikova+, 2022)
Detailed abundances of the wide pairs of stars with and without planets:
the binary systems 16 Cyg and HD 219542.
Ryabchikova T., Pakhomov Y., Mashonkina L., Sitnova T.
<Mon. Not. R. Astron. Soc., 514, 4958-4968 (2022)>
=2022MNRAS.514.4958R 2022MNRAS.514.4958R (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Spectroscopy ; Abundances
Keywords: stars: abundances - stars: atmospheres - (stars:) binaries: visual -
stars: evolution
Abstract:
We present results of the comparative analysis of the two wide binary
systems - 16 Cyg, with a giant gas planet orbiting around 16 Cyg B,
and HD 219542 without planet detected. Atmospheric parameters of the
binary components and the Sun were determined using their
high-resolution spectra and the SME tools for automatic spectral
analysis. By applying the synthetic spectrum method, we derived
abundances of 29 and 23 chemical elements in 16 Cyg and HD 219542,
respectively. For 19 of these elements, our results are based on the
non-local thermodynamic equilibrium line formation. For both 16 Cyg
and HD 219542, we obtained a small abundance difference between the A
and B components: +0.019±0.012 and -0.014±0.019, respectively,
suggesting only a weak influence of the giant gas planet formation on
chemical composition of the host star atmosphere. For HD 219542 A and
B, trends of the relative-to-solar abundances with the dust
condensation temperature are similar to the literature data for the
solar analogues without detected planets. The components of 16 Cyg
reveal very similar behaviour of [X/H] with the condensation
temperature; however, it is different from that for HD 219542. This
indicates a specific chemical composition of the cloud from which the
16 Cyg binary system formed.
Description:
NLTE abundances from individual lines in the Sun, 16 Cyg A and B
components, HD 219542 A and B components together with the line atomic
parameters and the references to them.
Objects:
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RA (2000) DE Designation(s)
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19 41 48.95 +50 31 30.2 16 Cyg A = HR 7503
19 41 51.97 +50 31 03.0 16 Cyg B = HR 7504
23 16 35.23 -01 35 11.4 HD 219542 A = HD 219542A
23 16 35.42 -01 35 06.9 HD 219542 B = HD 219542B
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
linelist.dat 120 354 NLTE abundances from individual lines in the Sun,
16 Cyg A and B components, HD 219542 A and B
components together with the line atomic
parameters and the references to them
refs.dat 370 115 References
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Byte-by-byte Description of file: linelist.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Ion Ion
8 A1 --- Flag ? Flag of close blends
10- 16 F7.3 --- Sun ? Abundance in Sun (Vesta)
18- 24 F7.3 --- 16CygA ? Abundance in 16 Cyg A (SME parameters)
26- 32 F7.3 --- 16CygB ? Abundance in 16 Cyg B (SME parameters)
34- 40 F7.3 --- 16CygA-1 ? Abundance in 16 Cyg A (Interferometric)
42- 48 F7.3 --- 16CygB-1 ? Abundance in 16 Cyg B (Interferometric)
50- 56 F7.3 --- HD219542A ? Abundance in HD 219542 A (SME)
58- 64 F7.3 --- HD219542B ? Abundance in HD 219542 B (SME)
66- 73 F8.3 0.1nm lambda Wavelength
75- 80 F6.3 eV Ei Excitation potential
82- 87 F6.3 --- loggf Logarithm of oscillator strength
89- 95 A7 --- r_loggf Reference of log gf, in refs.dat file
97-108 A12 --- r_HFS Reference HFS, in refs.dat file
110-120 A11 --- r_ISO Reference ISO, in refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Ref Reference code
9- 27 A19 --- BibCode ADS bibcode
31- 68 A38 --- DOI DOI
70-370 A301 --- Com Comments
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Acknowledgements:
Tatiana Ryabchikova, pakhomov(at)inasan.ru
(End) Patricia Vannier [CDS] 15-Dec-2023