Surface activity of a Rossby sequence of cool Hyades stars

Abstract

Aims. The Hyades cluster is key for the study of rotational, activity, and chemical evolution of solar-like low-mass stars. Here we present quantitative surface-activity information for a sequence of 21 Hyades dwarf stars. Conclusions. We conclude that the Rossby-number dependencies of the surface activity tracers A(Li), R(IRT), and B on our Hyades dwarf sequence primarily originate from convective motions, expressed by its turnover time, and only to a smaller and sometimes inverse extent from surface rotation and its related extra mixing.

arXiv comment19 pages, 9 figures, to be published in A&A

References in corpus (54)

• Gaia Data Release 3: Summary of the content and survey properties
• Validation of the new Hipparcos reduction
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)
• Ages for illustrative field stars using gyrochronology: viability, limitations and errors
• On the rotational evolution of solar- and late-type stars, its magnetic origins, and the possibility of stellar gyrochronology
• Stellar magnetism: empirical trends with age and rotation
• Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
• Least squares deconvolution of the stellar intensity and polarization spectra
• Gaia Data Release 3 Properties and validation of the radial velocities
• The remarkable solar twin HIP 56948: a prime target in the quest for other Earths
• Angular Momentum Loss from Cool Stars: An Empirical Expression and Connection to Stellar Activity
• Magnetism, rotation, and nonthermal emission in cool stars -- Average magnetic field measurements in 292 M dwarfs
• PEPSI: The high-resolution echelle spectrograph and polarimeter for the Large Binocular Telescope
• Stellar rotation in the Hyades and Praesepe: gyrochronology and braking timescale
• K2 rotation periods for low-mass Hyads and a quantitative comparison of the distribution of slow rotators in the Hyades and Praesepe
• The Factory and The Beehive II. Activity and Rotation in Praesepe and the Hyades
• The evolution of surface magnetic fields in young solar-type stars II: The early main sequence (250-650 Myr)
• A deep all-sky census of the Hyades
• The Revolution Revolution: magnetic morphology driven spin-down
• WIYN Open Cluster Study. LXXV. Testing the Metallicity Dependence of Stellar Lithium Depletion Using Hyades-Aged Clusters. 1. Hyades & Praesepe
• The Multiplicity of the Hyades and its Implications for Binary Star Formation and Evolution
• K2 Rotation Periods for low-mass Hyads and the Implications for Gyrochronology
• The photospheric solar oxygen project: IV. 3D-NLTE investigation of the 777 nm triplet lines
• The lithium-rotation connection in the 125 Myr-old Pleiades cluster
• PEPSI deep spectra. I. The Sun-as-a-star
• Hidden magnetic fields of young suns
• Powering Stellar Magnetism: Energy Transfers in Cyclic Dynamos of Sun-like Stars
• Consistent metallicity scale for cool dwarfs and giants. A benchmark test using the Hyades
• The Ca II infrared triplet's performance as an activity indicator compared to Ca II H and K
• Magnetic fields of young solar twins
• Oxygen from the Lambda 7774 High-Excitation Triplet in Open Cluster Dwarfs: Hyades
• Denoising spectroscopic data by means of the improved Least-Squares Deconvolution method
• PCA detection and denoising of Zeeman signatures in stellar polarised spectra
• The Origin of Weakened Magnetic Braking in Old Solar Analogs
• Global dynamo models from direct numerical simulations and their mean-field counterparts
• Influence of surface stressing on stellar coronae and winds
• Lithium, Carbon, and Oxygen Abundances of Hyades F-G Type Stars
• A calibration of the Rossby number from asteroseismology
• The open flux evolution of a solar-mass star on the main sequence
• Zeeman-Doppler Imaging of Late-Type Stars -- The Surface Magnetic Field of II Peg
• Estimating stellar wind parameters from low-resolution magnetograms
• Low-mass companions to Hyades stars
• Lithium depletion and angular momentum transport in F-type and G-type stars in Galactic open clusters
• Single stars in the Hyades open cluster. Fiducial sequence for testing stellar and atmospheric models
• Identifying solar-like magnetic cycles with Zeeman-Doppler-Imaging (ZDI)
• Benchmarking MESA isochrones against the Hyades single star sequence
• Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg
• The evolution of lithium in FGK dwarf stars: The Li rotation connection and the Li desert
• A detailed understanding of the rotation-activity relationship using the 300 Myr old open cluster NGC 3532
• Magnetic Fields of M Dwarfs from the Pleiades Open Cluster
• VPNEP: Detailed characterization of TESS targets around the Northern Ecliptic Pole
• First Doppler image and starspot-corrected orbit for $\lambda$ Andromedae: A multifaceted activity analysis
• Current helicity and electromotive force of magnetoconvection influenced by helical background fields