J/AJ/164/87 Elemental abundances of JWST target. I. FGK stars (Kolecki+, 2022)
Measuring Elemental Abundances of JWST Target Stars for Exoplanet
Characterization.
I. FGK Stars.
Kolecki J.R., Wang Ji
<Astron. J., 164, 87 (2022)>
=2022AJ....164...87K 2022AJ....164...87K
ADC_Keywords: Stars, F-type; Stars, G-type; Stars, K-type; Exoplanets;
Abundances; Spectra, optical; Spectra, infrared
Keywords: Exoplanets ; Planet hosting stars ; Stellar abundances ;
Abundance ratios
Abstract:
With the launch of the JWST, we will obtain more precise data for
exoplanets than ever before. However, these data can only inform and
revolutionize our understanding of exoplanets when placed in the
larger context of planet-star formation. Therefore, gaining a deeper
understanding of their host stars is equally important and synergistic
with the upcoming JWST data. We present detailed chemical abundance
profiles of 17 FGK stars that will be observed in exoplanet-focused
Cycle 1 JWST observer programs. The elements analyzed (C, N, O, Na,
Mg, Si, S, K, and Fe) were specifically chosen as being informative to
the composition and formation of planets. Using archival
high-resolution spectra from a variety of sources, we perform an LTE
equivalent width analysis to derive these abundances. We look to
literature sources to correct the abundances for non-LTE effects,
especially for O, S, and K, where the corrections are large (often
>0.2dex). With these abundances and the ratios thereof, we will begin
to paint clearer pictures of the planetary systems analyzed by this
work. With our analysis, we can gain insight into the composition and
extent of migration of Hot Jupiters, as well as the possibility of
carbon-rich terrestrial worlds.
Description:
Stellar spectral sources are listed in table2. In order of preference
(based on highest sensitivity at red wavelengths), data were sourced
from CFHT/ESPaDOnS (3700Å-10500Å, R=68000), CAHA/CARMENES
(5200Å9600Å, R=94600), ESO/FEROS (3200Å-9200Å, R=48000),
Keck/HIRES (3360Å-8100Å, R=67000), and ESO/ESPRESSO
(3800Å-7800Å], R=140000).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 53 17 Sources of stellar spectra
table4.dat 50 17 Stellar parameters
table5.dat 100 18 *Abundance data in log(εX) for target stars
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Note on table5.dat: Solar abundances are for reference and are sourced from
Asplund+, 2021A&A...653A.141A 2021A&A...653A.141A. Null entries in the table are a result
of complete nondetection of atomic lines of a given species for a
given star.
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/PASJ/57/65 : CNO abundances of solar-type stars (Takeda+, 2005)
J/ApJ/709/159 : Relative Ic photometry of WASP-17 (Anderson+, 2010)
J/ApJ/709/447 : Chemical composition of OGLE-2007-BLG-514S (Epstein+, 2010)
J/ApJ/735/41 : Carbon and oxygen abundances in FGK stars (Petigura+, 2011)
J/ApJ/757/161 : Spectroscopy of 56 exoplanet host stars (Torres+, 2012)
J/ApJ/778/132 : C and O abundances in 55 Cnc (Teske+, 2013)
J/AJ/148/54 : The Hypatia Catalog ((Hinkel+, 2014)
J/A+A/576/A69 : Li abundances in F stars (Delgado Mena+, 2015)
J/ApJ/831/20 : C/O and Mg/Si for solar neighborhood's stars (Brewer+, 2016)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/ApJ/831/64 : Mass-metallicity relation for giant planets (Thorngren+, 2016)
J/AJ/154/107 : California-Kepler Survey. I. 1305 stars (Petigura+, 2017)
J/MNRAS/479/1332 : Binaries with F, G or K primaries & M dwarfs (Montes+, 2018)
J/A+A/620/A58 : SWEET-Cat updated (Sousa+, 2018)
J/A+A/630/A104 : Disk and halo stars C, O and Fe abundances (Amarsi+, 2019)
J/AJ/162/125 : Transiting planets around halo stars. I. (Kolecki+, 2021)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star identifier
12- 19 A8 --- Inst Instrument used
21- 35 A15 --- PI Principal investigator
37- 40 I4 yr Obs.Y [2004/2019] Year of observation
42- 43 I2 "month" Obs.M Month of observation
45- 46 I2 d Obs.D Day of observation
48- 49 I2 --- Num [1/10] Number of stacked
51- 53 I3 --- S/N [53/316] Signal-to-noise ratio
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star identifier
12- 15 I4 K Teff [4682/6157] Effective temperature
17- 19 I3 K e_Teff [20/190] Error on Teff
21- 24 F4.2 cm/s logg [3.94/4.6] Surface gravity
26- 29 F4.2 cm/s e_logg [0.02/0.09] Error on logg
31- 34 F4.2 km/s ksi [0.5/1.78] Microturbulent velocity (ξ)
36- 39 F4.2 km/s e_ksi [0.07/0.4] Error on ksi
41- 45 F5.2 [Sun] Fe/H [-0.35/0.31] Metallicity, log (1)
47- 50 F4.2 [Sun] e_Fe/H [0.05/0.2] Error on Fe/H
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Note (1): log(σFe)sun)=7.46 according to Asplund+, 2021A&A...653A.141A 2021A&A...653A.141A.
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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- 10 A10 --- Star Star identifier
12- 15 F4.2 --- Fe [7.11/7.77] Iron abundance
17- 20 F4.2 --- e_Fe [0.04/0.2] Error on Fe
22- 25 F4.2 --- C [8.12/8.8] Carbon abundance
27- 30 F4.2 --- e_C [0.01/0.3] Error on C
32- 35 F4.2 --- N [7.62/8.08]? Nitrogen abundance
37- 40 F4.2 --- e_N [0.03/0.2]? Error on N
42- 45 F4.2 --- O [8.44/8.93] Oxygen abundance
47- 50 F4.2 --- e_O [0.02/0.2] Error on O
52- 55 F4.2 --- S [6.64/7.62]? Sulfur abundance
57- 60 F4.2 --- e_S [0.03/0.2]? Error on S
62- 65 F4.2 --- Mg [7.24/8.15] Magnesium abundance
67- 70 F4.2 --- e_Mg [0.03/0.2] Error on Mg
72- 75 F4.2 --- Si [7.36/8.04] Silicon abundance
77- 80 F4.2 --- e_Si [0.03/0.2] Error on Si
82- 85 F4.2 --- Na [5.95/6.83] Sodium abundance
87- 90 F4.2 --- e_Na [0.03/0.3] Error on Na
92- 95 F4.2 --- K [4.73/5.28] Potassium abundance
97-100 F4.2 --- e_K [0.02/0.2] Error on K
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 13-Jan-2023