J/MNRAS/495/3961 Planet-hosting stars chemical compositions (Liu+, 2020)
Detailed chemical compositions of planet-hosting stars.
I. Exploration of possible planet signatures.
Liu F., Yong D., Asplund M., Wang H.S., Spina L., Acuna L., Melendez J.,
Ramirez I.
<Mon. Not. R. Astron. Soc., 495, 3961-3973 (2020)>
=2020MNRAS.495.3961L 2020MNRAS.495.3961L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Equivalent widths ;
Abundances
Keywords: stars: abundances - stars: atmospheres - stars: planetary systems
Abstract:
We present a line-by-line differential analysis of a sample of 16
planet-hosting stars and 68 comparison stars using high-resolution,
high signal-to-noise ratio spectra gathered using Keck. We obtained
accurate stellar parameters and high-precision relative chemical
abundances with average uncertainties in Teff, logg, [Fe/H], and
[X/H] of 15K, 0.034cm/s2, 0.012dex, and 0.025dex, respectively.
For each planet host, we identify a set of comparison stars and
examine the abundance differences (corrected for Galactic chemical
evolution effect) as a function of the dust condensation temperature,
Tcond, of the individual elements. While we confirm that the Sun
exhibits a negative trend between abundance and Tcond, we also confirm
that the remaining planet hosts exhibit a variety of abundance-Tcond
trends with no clear dependence upon age, metallicity, or Teff. The
diversity in the chemical compositions of planet-hosting stars
relative to their comparison stars could reflect the range of possible
planet-induced effects present in these planet hosts, from the
sequestration of rocky material (refractory poor) to the possible
ingestion of planets (refractory rich). Other possible explanations
include differences in the time-scale, efficiency and degree of planet
formation, or inhomogeneous chemical evolution. Although we do not
find an unambiguous chemical signature of planet formation among our
sample, the high-precision chemical abundances of the host stars are
essential for constraining the composition and structure of their
exoplanets.
Description:
We present a differential analysis of 16 planet-hosting stars and 68
comparison objects using high-resolution, high S/N spectra. We
obtained high-precision stellar parameters and relative chemical
abundance ratios. Average uncertainties for Teff, logg, and [Fe/H]
are 15K, 0.034cm/s2, and 0.012dex, respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 101 84 Stellar parameters and ages for the program stars
table2.dat 273 83 Relative abundances for the program stars
table5.dat 117 16 Results of the linear fitting of [X/Fe] versus
Tcond for each planet host
tablea1.dat 520 191 Line list and equivalent width measurements
adopted for our analysis
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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 A1 --- Code [HC] H for Planet hosts, C for Comparison stars
3- 15 A13 --- Name Name
20- 21 I2 h RAh ? Right Ascension (J2000)
23- 24 I2 min RAm ? Right Ascension (J2000)
26- 30 F5.2 s RAs ? Right Ascension (J2000)
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd ? Declination (J2000)
36- 37 I2 arcmin DEm ? Declination (J2000)
39- 43 F5.2 arcsec DEs ? Declination (J2000)
45- 48 I4 K Teff Effective temperature
50- 51 I2 K e_Teff ? Effective temperature error
53- 57 F5.3 [cm/s2] logg Surface gravity
59- 63 F5.3 [cm/s2] e_logg ? Surface gravity error
65- 68 F4.2 km/s Vt Microturbulent velocity
70- 73 F4.2 km/s e_Vt ? Microturbulent velocity error
75- 80 F6.3 [-] [Fe/H] Metallicity
82- 86 F5.3 [-] e_[Fe/H] ? Metallicity error
88- 91 F4.1 Gyr Age Age
93- 96 F4.1 Gyr e_Age ? Age error, lower limit
98-101 F4.1 Gyr E_Age ? Age error, upper limit
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Byte-by-byte Description of file: table2.dat
------------------------------------------------------------------------------
Bytes Format Units Label Explanations
------------------------------------------------------------------------------
1- 13 A13 [-] Name Name
15- 20 F6.3 [-] [C/H] Abundance [C/H]
22- 26 F5.3 [-] e_[C/H] Error on [C/H]
28- 33 F6.3 [-] [O/H] ? Abundance [O/H]
35- 39 F5.3 [-] e_[O/H] ? Error on [O/H]
41- 46 F6.3 [-] [Na/H] Abundance [Na/H]
48- 52 F5.3 [-] e_[Na/H] Error on [Na/H]
54- 59 F6.3 [-] [Mg/H] Abundance [Mg/H]
61- 65 F5.3 [-] e_[Mg/H] Error on [Mg/H]
67- 72 F6.3 [-] [Al/H] Abundance [Al/H]
74- 78 F5.3 [-] e_[Al/H] Error on [Al/H]
80- 85 F6.3 [-] [Si/H] Abundance [Si/H]
87- 91 F5.3 [-] e_[Si/H] Error on [Si/H]
93- 98 F6.3 [-] [S/H] ? Abundance [S/H]
100-104 F5.3 [-] e_[S/H] ? Error on [S/H]
106-111 F6.3 [-] [Ca/H] Abundance [Ca/H]
113-117 F5.3 [-] e_[Ca/H] Error on [Ca/H]
119-124 F6.3 [-] [Sc/H] Abundance [Sc/H]
126-130 F5.3 [-] e_[Sc/H] Error on [Sc/H]
132-137 F6.3 [-] [TiI/H] Abundance [TiI/H]
139-143 F5.3 [-] e_[TiI/H] Error on [TiI/H]
145-150 F6.3 [-] [TiII/H] Abundance [TiII/H]
152-156 F5.3 [-] e_[TiII/H] Error on [TiII/H]
158-163 F6.3 [-] [V/H] Abundance [V/H]
165-169 F5.3 [-] e_[V/H] Error on [V/H]
171-176 F6.3 [-] [Cr/H] Abundance [Cr/H]
178-182 F5.3 [-] e_[Cr/H] Error on [Cr/H]
184-189 F6.3 [-] [Mn/H] Abundance [Mn/H]
191-195 F5.3 [-] e_[Mn/H] Error on [Mn/H]
197-202 F6.3 [-] [FeI/H] Abundance [FeI/H]
204-208 F5.3 [-] e_[FeI/H] Error on [FeI/H]
210-215 F6.3 [-] [FeII/H] Abundance [FeII/H]
217-221 F5.3 [-] e_[FeII/H] Error on [FeII/H]
223-228 F6.3 [-] [Co/H] Abundance [Co/H]
230-234 F5.3 [-] e_[Co/H] Error on [Co/H]
236-241 F6.3 [-] [Ni/H] Abundance [Ni/H]
243-247 F5.3 [-] e_[Ni/H] Error on [Ni/H]
249-254 F6.3 [-] [Zn/H] Abundance [Zn/H]
256-260 F5.3 [-] e_[Zn/H] Error on [Zn/H]
262-267 F6.3 [-] [Y/H] Abundance [Y/H]
269-273 F5.3 [-] e_[Y/H] Error on [Y/H]
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name Name
15- 20 F6.3 10-4K aall Coefficient a for fitting all elements
(in 10-4K/dex unit) (1)
22- 26 F5.3 10-4K e_aall Error on coefficient a for fitting all
elements (in 10-4K/dex unit)
28- 33 F6.3 --- ball coefficient b for fitting all elements
(in dex unit) (1)
35- 39 F5.3 --- e_ball Error on coefficient b for fitting all
elements (in dex unit)
41- 46 F6.3 10-4K avol coefficient a for fitting volatiles
(in 10-4K/dex unit) (1)
48- 52 F5.3 10-4K e_avol Error on coefficient a for fitting volatiles
(in 10-4K/dex unit)
54- 59 F6.3 --- bvol coefficient b for fitting volatiles
(in dex unit) (1)
61- 65 F5.3 --- e_bvol Error on coefficient b for fitting volatiles
(in dex unit)
67- 72 F6.3 10-4K aref coefficient a for fitting refractories
(in 10-4K/dex unit) (1)
74- 78 F5.3 10-4K e_aref Error on coefficient a for fitting
refractories (in 10-4K/dex unit)
80- 85 F6.3 --- bref coefficient b for fitting refractories
(in dex unit) (1)
87- 91 F5.3 --- e_bref Error on coefficient b for fitting
refractories (in dex unit)
93- 98 F6.3 [-] [vol/Fe] Volatiles abundance
100-104 F5.3 [-] e_[vol/Fe] Volatiles abundance error
106-111 F6.3 [-] [ref/Fe] Refractories abundance
113-117 F5.3 [-] e_[ref/Fe] Refractories abundance error
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Note (1): The coefficients are [X/Fe] = axTcond + b.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 F7.2 0.1nm lambda Wavelength
9- 12 F4.1 --- Species Species
14- 17 F4.2 eV LEP Lower excitation potential
19- 23 F5.2 [cm/s2] loggf Oscillator strength
25- 29 F5.1 0.1nm Sun(Iris) Equivalent width for Sun(Iris)
31- 35 F5.1 0.1nm HD1461 Equivalent width for HD1461
37- 40 F4.1 0.1nm EPIC220709978 ? Equivalent width for EPIC220709978
42- 46 F5.1 0.1nm EPIC212357477 ? Equivalent width for EPIC212357477
48- 52 F5.1 0.1nm Kepler-37 ? Equivalent width for Kepler-37
54- 57 F4.1 0.1nm Kepler-408 ? Equivalent width for Kepler-408
59- 63 F5.1 0.1nm Kepler-21 ? Equivalent width for Kepler-21
65- 69 F5.1 0.1nm HD179079 ? Equivalent width for HD179079
71- 75 F5.1 0.1nm Kepler-131 Equivalent width for Kepler-131
77- 81 F5.1 0.1nm Kepler-68 Equivalent width for Kepler-68
83- 87 F5.1 0.1nm Kepler-93 ? Equivalent width for Kepler-93
89- 93 F5.1 0.1nm Kepler-100 Equivalent width for Kepler-100
95- 99 F5.1 0.1nm Kepler-409 ? Equivalent width for Kepler-409
101-105 F5.1 0.1nm Kepler-96 ? Equivalent width for Kepler-96
107-111 F5.1 0.1nm HD190360 ? Equivalent width for HD190360
113-117 F5.1 0.1nm HD219828 Equivalent width for HD219828
119-123 F5.1 0.1nm HD166 ? Equivalent width for HD166
125-128 F4.1 0.1nm HD4813 ? Equivalent width for HD4813
130-134 F5.1 0.1nm HD4915 ? Equivalent width for HD4915
136-140 F5.1 0.1nm HD6250 ? Equivalent width for HD6250
142-146 F5.1 0.1nm HD7438 ? Equivalent width for HD7438
148-151 F4.1 0.1nm HD8671 ? Equivalent width for HD8671
153-156 F4.1 0.1nm HD9670 ? Equivalent width for HD9670
158-162 F5.1 0.1nm HD10307 Equivalent width for HD10307
164-168 F5.1 0.1nm HD15398 ? Equivalent width for HD15398
170-174 F5.1 0.1nm HIP12048 ? Equivalent width for HIP12048
176-180 F5.1 0.1nm HD68168 Equivalent width for HD68168
182-186 F5.1 0.1nm HD82943 ? Equivalent width for HD82943
188-192 F5.1 0.1nm HD84737 Equivalent width for HD84737
194-198 F5.1 0.1nm HD86728 ? Equivalent width for HD86728
200-204 F5.1 0.1nm HD88402 ? Equivalent width for HD88402
206-210 F5.1 0.1nm HD103459 Equivalent width for HD103459
212-216 F5.1 0.1nm HD104304 ? Equivalent width for HD104304
218-222 F5.1 0.1nm HD105631 ? Equivalent width for HD105631
224-228 F5.1 0.1nm HD106116 ? Equivalent width for HD106116
230-234 F5.1 0.1nm HD121320 ? Equivalent width for HD121320
236-240 F5.1 0.1nm HD122742 ? Equivalent width for HD122742
242-246 F5.1 0.1nm HD125184 ? Equivalent width for HD125184
248-252 F5.1 0.1nm HD127334 ? Equivalent width for HD127334
254-257 F4.1 0.1nm HD128385 ? Equivalent width for HD128385
259-263 F5.1 0.1nm HD130087 ? Equivalent width for HD130087
265-269 F5.1 0.1nm HD138004 ? Equivalent width for HD138004
271-275 F5.1 0.1nm HD140538 Equivalent width for HD140538
277-281 F5.1 0.1nm HD141937 Equivalent width for HD141937
283-287 F5.1 0.1nm HD146233 Equivalent width for HD146233
289-293 F5.1 0.1nm HD147062 Equivalent width for HD147062
295-299 F5.1 0.1nm HD148428 ? Equivalent width for HD148428
301-305 F5.1 0.1nm HD149806 ? Equivalent width for HD149806
307-311 F5.1 0.1nm HD150698 ? Equivalent width for HD150698
313-317 F5.1 0.1nm HD152391 ? Equivalent width for HD152391
319-323 F5.1 0.1nm HD154088 ? Equivalent width for HD154088
325-329 F5.1 0.1nm HD154962 ? Equivalent width for HD154962
331-335 F5.1 0.1nm HD156079 ? Equivalent width for HD156079
337-341 F5.1 0.1nm HD156365 ? Equivalent width for HD156365
343-347 F5.1 0.1nm HD159222 Equivalent width for HD159222
349-353 F5.1 0.1nm HD161424 Equivalent width for HD161424
355-359 F5.1 0.1nm HD164507 Equivalent width for HD164507
361-365 F5.1 0.1nm HD164922 ? Equivalent width for HD164922
367-371 F5.1 0.1nm HD165269 ? Equivalent width for HD165269
373-377 F5.1 0.1nm HD168009 Equivalent width for HD168009
379-383 F5.1 0.1nm HD172310 ? Equivalent width for HD172310
385-389 F5.1 0.1nm HD181253 ? Equivalent width for HD181253
391-395 F5.1 0.1nm HD182488 ? Equivalent width for HD182488
397-401 F5.1 0.1nm HD182572 ? Equivalent width for HD182572
403-407 F5.1 0.1nm HD183650 ? Equivalent width for HD183650
409-413 F5.1 0.1nm HD186408 ? Equivalent width for HD186408
415-419 F5.1 0.1nm HD190067 ? Equivalent width for HD190067
421-425 F5.1 0.1nm HIP98767 ? Equivalent width for HIP98767
427-431 F5.1 0.1nm HD190406 ? Equivalent width for HD190406
433-437 F5.1 0.1nm HD195019 ? Equivalent width for HD195019
439-443 F5.1 0.1nm HIP100970 ? Equivalent width for HIP100970
445-449 F5.1 0.1nm HD200790 ? Equivalent width for HD200790
451-455 F5.1 0.1nm HD210923 ? Equivalent width for HD210923
457-461 F5.1 0.1nm HD217014 Equivalent width for HD217014
463-467 F5.1 0.1nm HD218172 ? Equivalent width for HD218172
469-473 F5.1 0.1nm HD218790 Equivalent width for HD218790
475-478 F4.1 0.1nm HD219306 ? Equivalent width for HD219306
480-484 F5.1 0.1nm HD219542 Equivalent width for HD219542
486-490 F5.1 0.1nm HD220182 ? Equivalent width for HD220182
492-496 F5.1 0.1nm HD220908 ? Equivalent width for HD220908
498-502 F5.1 0.1nm HD11505 Equivalent width for HD11505
504-508 F5.1 0.1nm HIP14241 ? Equivalent width for HIP14241
510-514 F5.1 0.1nm HD136274 ? Equivalent width for HD136274
516-520 F5.1 0.1nm HD187923 ? Equivalent width for HD187923
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Acknowledgements:
Fan Liu, fanliu(at)swin.edu.au
(End) Patricia Vannier [CDS] 25-Nov-2020