Detailed Abundances of Planet-Hosting Open Clusters. The Praesepe (Beehive) Cluster

Abstract

It is not yet fully understood how planet formation affects the properties of host stars, in or out of a cluster; however, abundance trends can help us understand these processes. We present a detailed chemical abundance analysis of six stars in Praesepe, a planet-hosting open cluster. Pr0201 is known to host a close-in (period of 4.4 days) giant planet (mass of 0.54${\mathrm{M}}_{\mathrm{J}}$), while the other five cluster members in our sample (Pr0133, Pr0081, Pr0208, Pr0051, and Pr0076) have no detected planets according to RV measurements. Using high-resolution, high signal-to-noise echelle spectra obtained with Keck/HIRES and a novel approach to equivalent width measurements (XSpect-EW), we derived abundances of up to 20 elements spanning a range of condensation temperatures (Tc). We find a mean cluster metallicity of [Fe/H] = +0.21$\pm$0.02 dex, in agreement with most previous determinations. We find most of our elements show a [X/Fe] scatter of $\sim$0.02-0.03 dex and conclude that our stellar sample is chemically homogeneous. The Tc slope for the cluster mean abundances is consistent with zero and none of the stars in our sample exhibit individually a statistically significant Tc slope. Using a planet engulfment model, we find that the planet-host, Pr0201, shows no evidence of significant enrichment in its refractory elements when compared to the cluster mean that would be consistent with a planetary accretion scenario.

arXiv comment33 pages, 13 figures, 6 tables

References in corpus (60)

• The chemical composition of the Sun
• Gaia Data Release 2. Summary of the contents and survey properties
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Astrophysics Source Code Library
• The Eccentric Kozai-Lidov Effect and Its Applications
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• Giant Planet Occurrence in the Stellar Mass-Metallicity Plane
• The peculiar solar composition and its possible relation to planet formation
• The Mass of the Convective Zone in FGK Main Sequence Stars and the Effect of Accreted Planetary Material on Apparent Metallicity Determinations
• Eclipsing Binary Stars as Benchmarks for Trigonometric Parallaxes in the Gaia Era
• Protoplanetary disc truncation mechanisms in stellar clusters: comparing external photoevaporation and tidal encounters
• The Distances to Open Clusters from Main-Sequence Fitting. III. Improved Accuracy with Empirically Calibrated Isochrones
• Elemental abundance differences in the 16 Cygni binary system: a signature of gas giant planet formation?
• Two 'b's in the Beehive: The Discovery of the First Hot Jupiters in an Open Cluster
• The chemical homogeneity of open clusters
• Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging
• Chemical Homogeneity in the Hyades
• Chemical Compositions of Red Giant Stars in Old Large Magellanic Cloud Globular Clusters
• Chemical abundance analysis of the Open Clusters Berkeley 32, NGC 752, Hyades and Praesepe
• The same frequency of planets inside and outside open clusters of stars
• Stellar Radial Velocities in the Old Open Cluster M67 (NGC 2682) I. Memberships, Binaries, and Kinematics
• Can planetary instability explain the Kepler dichotomy?
• The FRIED grid of mass loss rates for externally irradiated protoplanetary discs
• On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends
• The dissimilar chemical composition of the planet-hosting stars of the XO-2 binary system
• Abundances of four open clusters from solar stars
• Detailed Abundances of the Solar Twins 16 Cygni A and B: Constraining Planet Formation Models
• Stability of Multiplanetary Systems in Star Clusters
• Viscous Evolution and Photoevaporation of Circumstellar Disks due to External FUV Radiation Fields
• The chemical compositions of solar twins in the open cluster M67
• High precision abundances in the 16 Cyg binary system: a signature of the rocky core in the giant planet
• Survivability of planetary systems in young and dense star clusters
• Planets In Young Massive Clusters: On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters
• Abundance Differences Between Exoplanet Binary Host Stars XO-2N and XO-2S -- Dependence on Stellar Parameters
• The GAPS Programme with HARPS-N at TNG. X. Differential abundances in the XO-2 planet hosting binary
• NLTE Chemical abundances in Galactic open and globular clusters
• Detailed Abundances of Planet-Hosting Wide Binaries. I. Did Planet Formation Imprint Chemical Signatures in the Atmospheres of HD 20782/81?
• Signatures of rocky planet engulfment in HAT-P-4. Implications for chemical tagging studies
• The dynamical fate of planetary systems in young star clusters
• Detailed Abundances of Stars with Small Planets Discovered by Kepler I: The First Sample
• The chemical composition of HIP34407/HIP34426 and other twin-star comoving pairs
• O, Na, Ba and Eu abundance patterns in open clusters
• The Chemical Composition of Praesepe (M44)
• Boron Abundances Across the "Li-Be Dip" in the Hyades
• The Age and Distance of the Kepler Open Cluster NGC 6811 from an Eclipsing Binary, Turnoff Star Pulsation, and Giant Asteroseismology
• Survival Rates of Planets in Open Clusters: the Pleiades, Hyades, and Praesepe clusters
• Comprehensive abundance analysis of red giants in the open clusters NGC 1342, 1662, 1912, 2354 and 2447
• Stellar population astrophysics (SPA) with the TNG. Revisiting the metallicity of Praesepe (M44)
• Detectability of Free Floating Planets in Open Clusters with JWST
• Lithium abundance in the metal-poor open cluster NGC 2243
• HD 80606: Searching the chemical signature of planet formation
• Stellar Nucleosynthesis in the Hyades Open Cluster
• WIYN Open Cluster Study, LXXVI. Li Evolution Among Stars of Low/Intermediate Mass: The Metal-Deficient Open Cluster, NGC 2506
• Photometric and Kinematic study of the three intermediate age open clusters NGC 381, NGC 2360, and Berkeley 68
• Cradle(s) of the Sun
• Detailed Abundances of Planet-Hosting Wide Binaries. II. HD80606 + HD80607
• Hubble Space Telescope Spectroscopy of a Planetary Nebula in an M31 Open Cluster: Hot-Bottom Burning at $3.4M_{\odot }$
• Did a stellar fly-by shape the planetary system around Pr 0211 in the cluster M 44?
• A Comparison of the Chemical Composition of Main Sequence and Giant Stars in the Open Cluster NCC 752
• Solving the distance discrepancy for the open cluster NGC 2453. The planetary nebula NGC 2452 is not a cluster member

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