J/AJ/162/291 Atomic data and equivalent width for WASP-160A & B (Jofre+, 2021)
The peculiar chemical pattern of the WASP-160 binary system: signatures of
planetary formation and evolution?
Jofre E., Petrucci R., Gomez Maqueo Chew Y., Ramirez I., Saffe C.,
Martioli E., Buccino A.P., Masek M., Garcia L., Canul E.F., Gomez M.
<Astron. J., 162, 291-291 (2021)>
=2021AJ....162..291J 2021AJ....162..291J (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple; Spectra, optical; Spectra, infrared;
Abundances
Keywords: Planetary system formation; Stellar abundances; Binary stars
Planet hosting stars
Abstract:
Wide binary stars with similar components hosting planets provide a
favorable opportunity for exploring the star-planet chemical
connection. We perform a detailed characterization of the solar-type
stars in the WASP-160 binary system. No planet has been reported yet
around WASP-160A, while WASP-160B is known to host a transiting
Saturn-mass planet, WASP-160Bb. For this planet, we also derive
updated properties from both literature and new observations.
Furthermore, using TESS photometry, we constrain the presence of
transiting planets around WASP-160A and additional ones around
WASP-160B. The stellar characterization includes, for the first time,
the computation of high-precision differential atmospheric and
chemical abundances of 25 elements based on high-quality Gemini-GRACES
spectra. Our analysis reveals evidence of a correlation between the
differential abundances and the condensation temperatures of the
elements. In particular, we find both a small but significant deficit
of volatiles and an enhancement of refractory elements in WASP-160B
relative to WASP-160A. After WASP-94, this is the second stellar pair
among the shortlist of planet-hosting binaries showing this kind of
peculiar chemical pattern. Although we discuss several plausible
planet formation and evolution scenarios for WASP-160A and B that
could explain the observed chemical pattern, none of them can be
conclusively accepted or rejected. Future high-precision photometric
and spectroscopic follow-up, as well as high-contrast imaging
observations, of WASP-160A and B might provide further constraints on
the real origin of the detected chemical differences.
Description:
We observed WASP-160A and WASP-160B on 2019 November 13 UT with the
Gemini Remote Access to CFHT ESPaDOnS Spectrograph (GRACES) at the
8.1m Gemini North telescope. Observations were carried out in the
queue mode (GN-2019B-Q-116, PI: E.Jofre) in the one-fiber mode (object
only), which achieves a resolving power of R∼67500 between 400 and
1050nm. We obtained consecutive exposures of 4x1060s for WASP-160A and
4x1469s for WASP-160B.
Objects:
------------------------------------------------
RA (2000) DE Designation(s)
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05 50 44.71 -27 37 05.1 WASP-160A = WASP-160A
05 50 43.06 -27 37 23.4 WASP-160B = WASP-160B
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 44 264 Adopted atomic data and measured equivalent widths
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/ApJ/732/55 : Abundances of stars with planets (Schuler+, 2011)
J/ApJ/743/24 : Solar models with accretion. I. (Serenelli+, 2011)
J/ApJ/756/46 : Lithium abundances in HIP stars (Ramirez+, 2012)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/A+A/562/A71 : Chemical abundances solar neighbourhood dwarfs (Bensby+, 2014)
J/ApJ/795/23 : Line list for stellar chemical abundances (Bedell+, 2014)
J/ApJ/785/94 : Lithium abundances of large sample of red giants (Liu+, 2014)
J/ApJ/791/14 : 18 Sco atomic data and equivalent widths (Melendez+, 2014)
J/A+A/574/A50 : Chemical abundances of giants and subgiants (Jofre+, 2015)
J/A+A/576/A69 : Li abundances in F stars (Delgado Mena+, 2015)
J/A+A/582/A17 : Keck+HIRES spectra of HD 80606 and HD 80607 (Saffe+, 2015)
J/A+A/583/A135 : XO-2N and XO-2S spectra (Biazzo+, 2015)
J/ApJ/801/L10 : XO-2N and XO-2S equivalent widths (Teske+, 2015)
J/ApJ/808/13 : XO-2S and XO-2N chemical composition (Ramirez+, 2015)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)
J/A+A/588/A81 : Line list and abundances of the binary zet2 Ret (Saffe+, 2016)
J/A+A/588/A98 : Metallicities & abundances of evolved stars (Maldonado+, 2016)
J/A+A/589/A17 : Abundance analysis solar twin HIP100963 (Yana Galarza+, 2016)
J/AJ/152/167 : Radial velocities of HD 133131A and HD 133131B (Teske+, 2016)
J/ApJ/819/19 : Equivalent widths of WASP-94A and WASP-94B (Teske+, 2016)
J/ApJ/831/64 : Mass-metallicity relation for giant planets (Thorngren+, 2016)
J/A+A/604/L4 : HAT-P-4 & TYC 2569-744-1 abundances & spectra (Saffe+, 2017)
J/AJ/153/257 : Comoving stars in Gaia DR1 (Oh+, 2017)
J/ApJ/835/25 : Calibrated solar S-index time series (Egeland+, 2017)
J/ApJ/839/94 : Abundances of solar twins from Keck/HIRES (Bedell+, 2017)
J/MNRAS/472/675 : Wide binaries in Tycho-Gaia: search method (Andrews+, 2017)
J/A+A/614/A55 : Lithium abundance dwarfs & subgiants (Aguilera-Gomez+, 2018)
J/A+A/618/A132 : Pre-main sequence stars evolution. models II (Kunitomo+, 2018)
J/AJ/156/18 : APOGEE DR14:Bin companions evolved stars (Price-Whelan+, 2018)
J/ApJ/865/68 : Abundances for 79 Sun-like stars within 100pc (Bedell+, 2018)
J/A+A/630/A104 : Disk and halo stars C, O and Fe abundances (Amarsi+, 2019)
J/MNRAS/482/301 : WASP-147b, 160Bb, 164b, and 165b phot. and RV (Lendl+, 2019)
J/A+A/634/A29 : Kepler-278 and Kepler-391 spectra (Jofre+, 2020)
J/ApJ/895/52 : EW & chemical abundances 211 stars with HARPS (Spina+, 2020)
J/MNRAS/492/1164 : Abundances of Gaia DR2 wide binaries (Hawkins+, 2020)
J/MNRAS/495/3961 : Planet-hosting stars chemical compositions (Liu+, 2020)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 F7.2 0.1nm lambda [4607/9112] Wavelength in Angstroms
9- 12 F4.1 --- Species Numeric species code (1)
14- 19 F6.3 eV ExPot [0/10.4] Excitation Potential
21- 26 F6.3 [-] loggf [-4.97/0.57] Log of the oscillator strength
28- 32 F5.1 10-13m EWA [7.8/182] Equivalenth width in WASP-160A (mÅ)
34- 38 F5.1 10-13m EWB [5/209] Equivalenth width in WASP-160B (mÅ)
40- 44 F5.1 10-13m EWSun [4.2/168] Equivalenth width in the Sun (mÅ)
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Note (1): In the format of XX.Y where XX is the atomic number and Y is the
ionization level, e.g. 26.0=>FeI.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 09-Mar-2022