The seven sisters DANCe.II. Proper motions and the lithium-rotation-activity connection for G and K Pleiads

Abstract

Stellar clusters are open windows to understand stellar evolution. Specifically, the change with time and the dependence on mass of different stellar properties. As such, they are our laboratories where different theories can be tested. We try to understand the origin of the connection between lithium depletion in F, G and K stars, rotation and activity, in particular in the Pleiades open cluster. We have collected all the relevant data in the literature, including information regarding rotation period, binarity and activity, and cross-matched with proper motions, multi-wavelength photometry and membership probability from the DANCe database. In order to avoid biases, only Pleiades single members with probabilities larger than p=0.75 have been included in the discussion. Results. The analysis confirms that there is a strong link between activity, rotation and the lithium equivalent width excess, specially for the range Lum(bol) = 0.5-0.2 Lsun (about K2-K7 spectral types or 0.75-0.95 Msun). It is not possible to disentangle these effects but we cannot exclude that the observed lithium overabundance is partially an observational effect due to enhanced activity, due to a large coverage by stellar spots induced by high rotation rates. Since a bona fide lithium enhancement is present in young, fast rotators, both activity and rotation should play a role in the lithium problem.

arXiv commentAccepted Astronomy & Astrophysics, three big tables submitted to CDS

References in corpus (49)

• The K2 Mission: Characterization and Early results
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
• Measuring the rotation period distribution of field M-dwarfs with Kepler
• Keck Spectra of Pleiades Brown Dwarf Candidates and a Precise Determination of the Lithium Depletion Edge in the Pleiades
• Stellar Rotation Periods of the Kepler Objects of Interest: A Dearth of Close-in Planets around Fast Rotators
• Spectroscopy of Very Low Mass Stars and Brown Dwarfs in IC2391: Lithium depletion and Halpha emission
• The Problem of Hipparcos Distances to Open Clusters: I. Constraints from Multicolor Main Sequence Fitting
• Effect of episodic accretion on the structure and the lithium depletion of low-mass stars and planet-hosting stars
• Brown Dwarfs in the Pleiades Cluster Confirmed by the Lithium Test
• Enhanced lithium depletion in Sun-like stars with orbiting planets
• Lithium depletion and the rotational history of exoplanet host stars
• Confirmation of Errors in Hipparcos Parallaxes from HST/FGS Astrometry of the Pleiades
• A VLBI Resolution of the Pleiades Distance Controversy
• Membership and Multiplicity among Very Low-Mass Stars and Brown Dwarfs in the Pleiades Cluster
• Near and Mid-IR Photometry of the Pleiades, and a New List of Substellar Candidate Members
• Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
• Atmospheres from very low-mass stars to extrasolar planets
• Membership, lithium, and metallicity in the young open clusters IC 2602 and IC 2391: enlarging the sample
• Why are the K dwarfs in the Pleiades so Blue?
• Solar twins in M67
• Brown dwarfs and low-mass stars in the Pleiades and Praesepe:- Membership and binarity
• Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster
• Dynamical Analysis of Nearby ClustErs. Automated astrometry from the ground: precision proper motions over wide field
• Rotation, inflation, and lithium in the Pleiades
• Cluster membership probabilities from proper motions and multiwavelength photometric catalogues: I. Method and application to the Pleiades cluster
• The Lithium Depletion Boundary and the Age of the Young Open Cluster IC~2391
• Impact of rotation and disc lifetime on pre-main sequence lithium depletion of solar-type stars
• The Seven Sisters DANCe. I. Empirical isochrones, Luminosity and Mass Functions of the Pleiades cluster
• A Tale of Two Anomalies: Depletion, Dispersion, and the Connection Between the Stellar Lithium Spread and Inflated Radii on the Pre-Main Sequence
• Spectroscopy of Very Low Mass Stars and Brown Dwarfs in the Lambda Orionis Star Forming Region
• The Lithium-Rotation Correlation in the Pleiades Revisited
• Astrometric and photometric initial mass functions from the UKIDSS Galactic Clusters Survey: I The Pleiades
• A New Pleiades Member at the Lithium Substellar Boundary
• On the relationship between the size and surface coverage of starspots on magnetically active low-mass stars
• The Gaia-ESO Survey: A lithium-rotation connection at 5 Myr?
• WIYN Open Cluster Study 5. Lithium Depletion and Metallicity in G and K Dwarfs of the Open Cluster M35
• Orion revisited. II. The foreground population to Orion A
• The effect of starspots on the radii of low-mass pre-main sequence stars
• The Gaia-ESO Survey: Discovery of a spatially extended low-mass population in the Vela OB2 association
• Radial velocity confirmation of Kepler-91 b. Additional evidence of its planetary nature using the Calar Alto/CAFE instrument
• The effect of stellar activity on the LiI 6708, NaI 5896 and KI 7699 Ålines: A comparison with the Pleiades, field stars and the Sun
• Low-mass members of the young cluster IC 4665 and pre-main-sequence lithium depletion
• Cool stars in NGC 2547 and pre main sequence lithium depletion
• On the lithium abundance dispersion in late-type Pleiades stars
• On the dispersion in lithium and potassium among late-type stars in young clusters: IC 2602
• Li I and K I Scatter in Cool Pleiades Dwarfs
• No evidence for intense, cold accretion onto YSOs from measurements of Li in T-Tauri stars
• On the potassium-rotation connection in late-type Alpha Persei stars

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• A 5D view of the Alpha Per, Pleiades, and Praesepe clusters
• The lithium-rotation connection in the 125 Myr-old Pleiades cluster
• The Gaia-ESO Survey: Empirical estimates of stellar ages from lithium equivalent widths (EAGLES)
• A Measurement of Radius Inflation in the Pleiades and its Relation to Rotation and Lithium Depletion
• Lithium depletion in solar-like stars: effect of overshooting based on realistic multi-dimensional simulations
• The effects of rotation on the lithium depletion of G- and K-dwarfs in Messier 35
• Lithium depletion boundary, stellar associations, and Gaia
• The seven sisters DANCe IV. Bayesian hierarchical model
• The evolution of lithium in FGK dwarf stars: The Li rotation connection and the Li desert
• Low-mass eclipsing binaries in the WFCAM Transit Survey: the persistence of the M-dwarf radius inflation problem
• The Gaia-ESO Survey: Constraining evolutionary models and ages for young low mass stars with measurements of lithium depletion and rotation
• The peculiar chemical abundance of the transitional millisecond pulsar PSR J1023+0038 -- Li enhancement
• LAMOST medium-resolution observations of the Pleiades
• The Ages of Optically Bright Sub-Clusters in the Serpens Star-Forming Region
• Suppression of lithium depletion in young low-mass stars from fast rotation