J/A+A/700/A127 Abundances of 50 F- and G-type (Carlos+, 2025)
The peculiar composition of the Sun is not related to giant planets.
Carlos M., Amarsi A.M., Nissen P.E., Canocchi G.
<Astron. Astrophys. 700, A127 (2025)>
=2025A&A...700A.127C 2025A&A...700A.127C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, late-type ; Abundances ; Optical
Keywords: line: formation - Sun: abundances - stars: abundances -
stars: atmospheres - stars: late-type
Abstract:
Highly differential spectroscopic studies have revealed that the Sun
is deficient in refractory elements relative to solar twins. To
investigate the role of giant planets on this signature, we present a
high precision abundance analysis of HARPS spectra for 50 F- and
G-type stars spanning -0.4≲[Fe/H]≲+0.5. There are 29 stars in the
sample which host planets of masses ≳0.01Mjup. We derive abundances
for 19 elements, and apply corrections to 14 of them for systematic
errors associated with one dimensional (1D) model atmospheres, or the
assumption of local thermodynamic equilibrium (LTE), or both. We find
that, among the solar twins in our sample, the Sun is Li poor in
comparison to other stars at similar age, in agreement to previous
studies. The sample shows a variety of trends in elemental abundances
as a function of condensation temperature. We find a strong
correlation in these trends with [Fe/H], with a marginally-significant
difference in the gradients for stars with and without giants planets
detected, that increases after applying 3D and non-LTE corrections.
Our overall results suggests that the peculiar composition of the Sun
is primarily related to Galactic chemical evolution rather than the
presence of giant planets.
Description:
The sample consists of 50 F- and G-type stars observed with the HARPS
spectrograph at the 3.6m ESO telescope.
The stellar parameters and planetary information are in Table 1 and
LTE and non-LTE abundances and the respective errors are presented in
Table 2.
The condensation temperature slopes derived using the "best" set of
abundances and the 1D LTE ones, for each case and their respective
errors are present in Table 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 50 Stellar parameters, ages and number of planets
table2.dat 455 50 Stellar abundances
table3.dat 58 50 Condensation temperature slopes
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Star Name of star
10- 13 I4 K Teff Effective temperature
15- 18 F4.2 km/s vmic 1D microturbulence parameter
20- 23 F4.2 [cm/s2] logg Logarithm of surface gravity
25- 29 F5.3 [cm/s2] e_logg Uncertainty on logg
31- 37 F7.4 --- [Fe/H] 3D LTE iron abundance
39- 44 F6.4 --- e_[Fe/H] Uncertainty on [Fe/H](3D LTE)
46- 50 F5.2 Gyr Age Stellar age
52- 55 F4.2 Gyr e_Age Uncertainty on age
57 I1 --- Nplanets Number of planet detections
59- 64 F6.3 Mjup PSmass Planetary system mass
66- 74 F9.5 deg RAdeg Right ascension (J2000)
76- 84 F9.5 deg DEdeg Declination (J2000)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Star Name of star
10- 14 F5.3 --- A(Li)1DLTE 1D LTE Li abundance
15 A1 --- l_A(Li)3DNLTE Upper limit flag on A(Li)3DNLTE
16- 21 F6.3 --- A(Li)3DNLTE 3D NLTE Li abundance
23- 27 F5.3 --- E_A(Li)3DNLTE ? Uncertainty on A(Li), upper value
30- 34 F5.3 --- e_A(Li)3DNLTE ? Uncertainty on A(Li), lower value
37- 43 F7.4 --- [C/H]1DLTE 1D LTE carbon abundance
45- 50 F6.4 --- e_[C/H]1DLTE Uncertainty on [C/H]1DLTE
52- 58 F7.4 --- [C/H]3DNLTE 3D non-LTE carbon abundance
60- 65 F6.4 --- e_[C/H]3DNLTE Uncertainty on [C/H]3DNLTE
67- 73 F7.4 --- [O/H]1DLTE 1D LTE oxygen abundance
75- 80 F6.4 --- e_[O/H]1DLTE Uncertainty on [O/H]1DLTE
82- 88 F7.4 --- [O/H]3DNLTE 3D non-LTE oxygen abundance
90- 95 F6.4 --- e_[O/H]3DNLTE Uncertainty on [O/H]3DNLTE
97-102 F6.3 --- [Na/H]1DLTE 1D LTE sodium abundance
104-109 F6.4 --- e_[Na/H]1DLTE Uncertainty on [Na/H]1DLTE
111-117 F7.4 --- [Na/H]3DNLTE 3D non-LTE Sodium abundance
119-124 F6.4 --- e_[Na/H]3DNLTE Uncertainty on [Na/H]3DNLTE
126-131 F6.3 --- [Mg/H]1DLTE 1D LTE magnesium abundance
133-138 F6.4 --- e_[Mg/H]1DLTE Uncertainty on [Mg/H]1DLTE
140-144 F5.2 --- [Mg/H]3DNLTE 3D non-LTE magnesium abundance
146-150 F5.3 --- e_[Mg/H]3DNLTE Uncertainty on [Mg/H]3DNLTE
152-157 F6.3 --- [Al/H]1DLTE 1D LTE aluminium abundance
159-164 F6.4 --- e_[Al/H]1DLTE Uncertainty on [Al/H]1DLTE
166-172 F7.4 --- [Al/H]1DNLTE 1D non-LTE aluminium abundance
174-179 F6.4 --- e_[Al/H]1DNLTE Uncertainty on [Al/H]1DNLTE
181-186 F6.3 --- [Si/H]1DLTE 1D LTE silicon abundance
188-193 F6.4 --- e_[Si/H]1DLTE Uncertainty on [Si/H]1DLTE
195-201 F7.4 --- [Si/H]1DNLTE 1D non-LTE silicon abundance
203-208 F6.4 --- e_[Si/H]1DNLTE Uncertainty on [Si/H]1DNLTE
210-215 F6.3 --- [S/H]1DLTE 1D LTE sulfur abundance
217-222 F6.4 --- e_[S/H]1DLTE Uncertainty on [S/H]1DLTE
224-230 F7.4 --- [S/H]1DNLTE 1D non-LTE sulfur abundance
232-237 F6.4 --- e_[S/H]1DNLTE Uncertainty on [S/H]1DNLTE
239-244 F6.3 --- [Ca/H]1DLTE 1D LTE calcium abundance
246-251 F6.4 --- e_[Ca/H]1DLTE Uncertainty on [Ca/H]1DLTE
253-259 F7.4 --- [Ca/H]1DNLTE 1D non-LTE calcium abundance
261-266 F6.4 --- e_[Ca/H]1DNLTE Uncertainty on [Ca/H]1DNLTE
268-274 F7.4 --- [Sc/H]1DLTE 1D LTE scandium abundance
276-281 F6.4 --- e_[Sc/H]1DLTE Uncertainty on [Sc/H]1DLTE
283-289 F7.4 --- [Ti/H]1DLTE 1D LTE titanium abundance
291-296 F6.4 --- e_[Ti/H]1DLTE Uncertainty on [Ti/H]1DLTE
298-304 F7.4 --- [Ti/H]1DNLTE 1D non-LTE titanium abundance
306-311 F6.4 --- e_[Ti/H]1DNLTE Uncertainty on [Ti/H]1DNLTE
313-318 F6.3 --- [V/H]1DLTE 1D LTE vanadium abundance
320-325 F6.4 --- e_[V/H]1DLTE Uncertainty on [V/H]1DLTE
327-333 F7.4 --- [Cr/H]1DLTE 1D LTE chromium abundance
335-340 F6.4 --- e_[Cr/H]1DLTE Uncertainty on [Cr/H]1DLTE
342-348 F7.4 --- [Cr/H]1DNLTE 1D non-LTE chromium abundance
350-355 F6.4 --- e_[Cr/H]1DNLTE Uncertainty on [Cr/H]1DNLTE
357-362 F6.3 --- [Mn/H]1DLTE 1D LTE manganese abundance
364-369 F6.4 --- e_[Mn/H]1DLTE Uncertainty on [Mn/H]1DLTE
371-377 F7.4 --- [Mn/H]1DNLTE 1D non-LTE manganese abundance
379-384 F6.4 --- e_[Mn/H]1DNLTE Uncertainty on [Mn/H]1DNLTE
386-391 F6.3 --- [Co/H]1DLTE 1D LTE cobalt abundance
393-398 F6.4 --- e_[Co/H]1DLTE Uncertainty on [Co/H]1DLTE
400-406 F7.4 --- [Co/H]1DNLTE 1D non-LTE cobalt abundance
408-413 F6.4 --- e_[Co/H]1DNLTE Uncertainty on [Co/H]1DNLTE
415-420 F6.3 --- [Ni/H]1DLTE 1D LTE nickel abundance
422-427 F6.4 --- e_[Ni/H]1DLTE Uncertainty on [Ni/H]1DLTE
429-434 F6.3 --- [Cu/H]1DLTE 1D LTE copper abundance
436-441 F6.4 --- e_[Cu/H]1DLTE Uncertainty on [Cu/H]1DLTE
443-448 F6.3 --- [Zn/H]1DLTE 1D LTE zinc abundance
450-455 F6.4 --- e_[Zn/H]1DLTE Uncertainty on [Zn/H]1DLTE
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Star Name of star
10- 17 F8.5 10-4K-1 Tcslope(best) Condensation temperature slope
19- 25 F7.5 10-4K-1 E_Tcslope(best) Uncertainty on Tc_slope(best)
27- 33 F7.5 10-4K-1 e_Tcslope(best) Uncertainty on Tc_slope(best)
35- 42 F8.5 10-4K-1 Tcslope(1DLTE) Condensation temperature slope
44- 50 F7.5 10-4K-1 E_Tcslope(1DLTE) Uncertainty on Tc_slope(1DLTE)
52- 58 F7.5 10-4K-1 e_Tcslope(1DLTE) Uncertainty on Tc_slope(1DLTE)
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Acknowledgements:
Marilia Carlos, mariliacarlos(at)on.br
(End) Patricia Vannier [CDS] 20-Jun-2025