Chemical Composition of the Planet-Harboring Star TrES-1

Abstract

We present a detailed chemical abundance analysis of the parent star of the transiting extrasolar planet TrES-1. Based on high-resolution Keck/HIRES and HET/HRS spectra, we have determined abundances relative to the Sun for 16 elements (Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Y, and Ba). The resulting average abundance of $<[$$X$/H$]>$ $=-0.02\pm 0.06$ is in good agreement with initial estimates of solar metallicity based on iron. We compare the elemental abundances of TrES-1 with those of the sample of stars with planets, searching for possible chemical abundance anomalies. TrES-1 appears not to be chemically peculiar in any measurable way. We investigate possible signs of selective accretion of refractory elements in TrES-1 and other stars with planets, and find no statistically significant trends of metallicity [$X$/H] with condensation temperature $T_c$. We use published abundances and kinematic information for the sample of planet-hosting stars (including TrES-1) and several statistical indicators to provide an updated classification in terms of their likelihood to belong to either the thin disk or the thick disk of the Milky Way Galaxy. TrES-1 is found to be a very likely member of the thin disk population. By comparing $\alpha$-element abundances of planet hosts and a large control sample of field stars, we also find that metal-rich ([Fe/H]$\gtrsim 0.0$) stars with planets appear to be systematically underabundant in [$\alpha$/Fe] by $\approx 0.1$ dex with respect to comparison field stars. The reason for this signature is unclear, but systematic differences in the analysis procedures adopted by different groups cannot be ruled out.

arXiv comment52 pages, 15 figures, 5 tables, accepted for publication in the Astronomical Journal

References in corpus (69)

• The USNO-B Catalog
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• Local stellar kinematics from Hipparcos data
• Spectroscopic [Fe/H] for 98 extra-solar planet-host stars: Exploring the probability of planet formation
• Stellar Chemical Signatures And Hierarchical Galaxy Formation
• The Chemical Compositions of Galactic Disk F and G Dwarfs
• alpha-, r-, and s-process element trends in the Galactic thin and thick disks
• Towards a deterministic model of planetary formation. III. Mass distribution of short-period planets around stars of various masses
• The metal-rich nature of stars with planets
• TrES-1: The Transiting Planet of a Bright K0V Star
• The Galactic Thick Disk Stellar Abundances
• Stellar Iron Abundances: non-LTE Effects
• Chemical composition of 90 F and G disk dwarfs
• Parent Stars of Extrasolar Planets VI: Abundance Analyses of 20 New Systems
• Statistical properties of exoplanets II. Metallicity, orbital parameters, and space velocities
• Spectroscopic metallicities for planet-host stars: extending the samples
• Vertical distribution of Galactic disk stars I - Kinematics and metallicity
• O/Fe in metal-poor main sequence and subgiant stars
• The Mass of the Convective Zone in FGK Main Sequence Stars and the Effect of Accreted Planetary Material on Apparent Metallicity Determinations
• Abundances in Stars from the Red Giant Branch Tip to Near the Main Sequence Turn Off in M71: III. Abundance Ratios
• Chemical Abundances of the Damped Lya Systems at z>1.5
• On the correlation of elemental abundances with kinematics among galactic disk stars
• Parent Stars of Extrasolar Planets V: HD75289
• Abundance trends in kinematical groups of the Milky Way's disk
• Abundances in metal-rich stars - Detailed abundance analysis of 47 G and K dwarf stars with [Me/H] $>$ 0.10 dex
• Metallic fingers and metallicity excess in exoplanets host stars : the accretion hypothesis revisited
• Abundances of Cu and Zn in metal-poor stars: clues for Galaxy evolution
• Lithium in stars with exoplanets
• Sulphur and zinc abundances in Galactic stars and damped Lyman-alpha systems
• Parent Stars of Extrasolar Planets VII: New Abundance Analyses of 30 Systems
• The HARPS search for southern extra-solar planets I. HD330075 b: a new 'hot Jupiter'
• The Abundance Distribution in the Extrasolar-Planet Host Star HD19994
• Signatures of SN Ia in the galactic thick disk
• C, S, Zn and Cu abundances in planet-harbouring stars
• Abundance Analysis of Planetary Host Stars I. Differential Iron Abundances
• A Critical Examination of Li Pollution and Giant Planet Consumption by a Host Star
• Oxygen abundances in planet-harbouring stars. Comparison of different abundance indicators
• A Differential Spectroscopic Analysis of 16 Cygni A and B
• Chemical abundances of planet-host stars: Results for alpha and Fe-group elements
• Possible Stellar Metallicity Enhancements from the Accretion of Planets
• Mining the Metal-Rich Stars for Planets
• On the Nature of Stars with Planets
• Photospheric Abundances of Volatile and Refractory Elements in Planet-Harboring Stars
• A Search for ${}^6$Li in Stars with Planets
• Chemical abundances in 43 metal-poor stars
• Beryllium in the Hyades F and G Dwarfs from Keck/HIRES Spectra
• The Host Stars of Extrasolar Planets Have Normal Lithium Abundances
• Are Stars with Planets Polluted?
• New measurement of the Lithium-6/Lithium-7 isotopic ratio in the extra-solar planet host star HD82943 and line blending in the Li 6708 A region
• Magnesium isotope ratios in Hyades stars
• Sulphur abundance in Galactic stars
• High-Resolution Spectroscopy of the Transiting Planet Host Star TrES-1
• Formation of giant planets in disks with different metallicities
• On the Possible Correlation Between the Orbital Periods of Extra-solar Planets and the Metallicity of the Host Stars
• A Comparison of the Chemical Evolutionary Histories of the Galactic Thin Disk and Thick Disk Stellar Populations
• A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars
• Nitrogen abundances in Planet-harbouring stars
• Planet accretion and the abundances of lithium isotopes
• Are beryllium abundances anomalous in stars with giant planets?
• A Search for ${}^6$Li in Lithium-Poor Stars with Planets
• Beryllium abundances in stars hosting giant planets
• Galactic orbits of stars with planets
• Abundances of Na, Mg and Al in stars with giant planets
• Chemical Abundances Of Three Metal-Poor Globular Clusters (NGC 6287, NGC 6293, And NGC 6541) In The Inner Halo
• The [Zn/Fe] -- [Fe/H] trend for disk and halo stars
• Kinematics, ages and metallicities for F and G type stars in the solar neighbourhood
• The Ultra Luminous X-ray sources in the High Velocity System of NGC 1275
• An Improved uvby-Metallicity Calibration for Metal-Rich Stars
• Stellar pollution and [Fe/H] in the Hyades

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• Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2
• TrES-2: The First Transiting Planet in the Kepler Field
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• The GAPS Programme with HARPS-N at TNG. X. Differential abundances in the XO-2 planet hosting binary
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• A Keck/HIRES Doppler Search for Planets Orbiting Metal-Poor Dwarfs. I. Testing Giant Planet Formation and Migration Scenarios
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• ${\zeta }^2$ Ret, its debris disk, and its lonely stellar companion ${\zeta }^1$ Ret. Different $T_{\mathrm{c}}$ trends for different spectra
• Abundance trend with condensation temperature for stars with different Galactic birth places
• Chemical abundances for the transiting planet host stars OGLE-TR-10, 56, 111, 113, 132 and TrES-1. Abundances in different galactic populations
• Characterization of the Kepler-101 planetary system with HARPS-N. A hot super-Neptune with an Earth-sized low-mass companion
• Sun-like stars unlike the Sun: Clues for chemical anomalies of cool stars
• TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits