Extending the FIP bias sample to magnetically active stars. Challenging the FIP bias paradigm?

Abstract

The different elemental abundances of the photosphere and the corona are striking features of not only the Sun, but other stars as well. This phenomenon is known as the FIP effect (FIP stands for first ionization potential), and its strength can be characterized by the FIP bias, the logarithmic abundance difference between low- and high-FIP elements in the corona, compared to the photosphere. The FIP bias was shown to depend on the surface temperature of the star. We compiled FIP bias and other parameters for 59 stars for which coronal composition is available, now including evolved stars. Using principal component analysis and linear discriminant analysis, we searched for correlations with other astrophysical parameters within the sample which may influence the stellar FIP bias. Adding stars to the $T_{\mathrm{eff}}-$FIP bias diagram unveiled new features in its structure. In addition to the previously known relationship, there appears to be a second branch, a parallel sequence about 0.5 dex above it. While the $T_{\mathrm{eff}}$ remains the main determinant of the FIP bias, other parameters such as stellar activity indicators also have influence. We find three clusters in the FIP bias determinant parameter space. One distinct group is formed by the evolved stars. Two groups contain main sequence stars in continuation separated roughly by the sign change of the FIP-bias value. The new branch of the $T_{\mathrm{eff}}-$FIP bias diagram contains stars with higher activity level, in terms of X-ray flux and rotational velocity. The two main sequence clusters run from the earliest spectral types of A-F with shallow convection zones through G-K-early M stars with gradually deeper convection zones, and end up with the fully convective M dwarf stars, depicting the change of the dynamo type with the internal differences of the main sequence stars in connection with the FIP-bias values.

arXiv comment21 pages, 12 figures, 5 tables, accepted by A&A

References in corpus (134)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• The NumPy array: a structure for efficient numerical computation
• The chemical composition of the Sun
• Gaia Data Release 2. Summary of the contents and survey properties
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics
• The Revised TESS Input Catalog and Candidate Target List
• Ages for illustrative field stars using gyrochronology: viability, limitations and errors
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• Gaia Early Data Release 3: Photometric content and validation
• Chromospheric CaII Emission in Nearby F, G, K, and M stars
• BANYAN. XI. The BANYAN $\Sigma$ multivariate Bayesian algorithm to identify members of young associations within 150 pc
• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I
• Large-scale magnetic topologies of mid-M dwarfs
• A Spectroscopic Study of the Ancient Milky Way: F- and G-Type Stars in the Third Data Release of the Sloan Digital Sky Survey
• Spectroscopy Made Easy: Evolution
• Metallicity and Temperature Indicators in M dwarf K band Spectra: Testing New & Updated Calibrations With Observations of 133 Solar Neighborhood M dwarfs
• Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
• S4N: A Spectroscopic Survey of Stars in the Solar Neighborhood
• The FIP and Inverse FIP Effects in Solar and Stellar Coronae
• Imaging the Surface of Altair
• Precision Stellar Characterization of FGKM Stars using an Empirical Spectral Library
• Gaia FGK Benchmark Stars: Effective temperatures and surface gravities
• Resolving the Xi Boo Binary with Chandra, and Revealing the Spectral Type Dependence of the Coronal "FIP Effect"
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18
• Stellar Diameters and Temperatures III. Main Sequence A, F, G, & K Stars: Additional high-precision measurements and empirical relations
• Chromospheric activity catalogue of 4454 cool stars. Questioning the active branch of stellar activity cycles
• Evidence for Magnetic Flux Saturation in Rapidly Rotating M Stars
• NEXXUS: A comprehensive ROSAT survey of coronal X-ray emission among nearby solar-like stars
• A Unified Picture of the FIP and Inverse FIP Effects
• A catalogue of [Fe/H] determinations : 1996 edition
• A High-Precision NIR Survey for RV Variable Low-Mass Stars
• New Debris Disks Around Young, Low Mass Stars Discovered With The Spitzer Space Telescope
• The CARMENES search for exoplanets around M dwarfs: Different roads to radii and masses of the target stars
• The "Solar Model Problem" Solved by the Abundance of Neon in Stars of the Local Cosmos
• Calibrating Gyrochronology using Kepler Asteroseismic targets
• Identifying the Young Low-mass Stars within 25 pc. I. Spectroscopic Observations
• The Solar Twin Planet Search. I. Fundamental parameters of the stellar sample
• Magnetic activity in the HARPS M-dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK
• The evolution of surface magnetic fields in young solar-type stars I: the first 250 Myr
• Magnetic cycles of the planet-hosting star Tau Bootis: II. a second magnetic polarity reversal
• Coronal Evolution of the Sun in Time: High-Resolution X-Ray Spectroscopy of Solar Analogs with Different Ages
• Gaia FGK benchmark stars: abundances of alpha and iron-peak elements
• CARMENES input catalogue of M dwarfs V. Luminosities, colours, and spectral energy distributions
• The Properties of the Solar Corona and Its Connection to the Solar Wind
• Abundances in the Local Region II: F, G and K Dwarfs and Subgiants
• BANYAN. IV. Fundamental parameters of low-mass star candidates in nearby young stellar kinematic groups - Isochronal Age determination using Magnetic evolutionary models
• On the sizes of stellar X-ray coronae
• Discovery of a 1.6-year Magnetic Activity Cycle in the Exoplanet Host Star iota Horologii
• Non-WKB Models of the FIP Effect: Implications for Solar Coronal Heating and the Coronal Helium and Neon Abundances
• High-resolution X-ray spectroscopy of Procyon by Chandra and XMM-Newton
• A Study of the Coronal Plasma in RS CVn binary systems
• New rotation period measurements for M dwarfs in the southern hemisphere: an abundance of slowly rotating, fully convective stars
• X-Ray Spectroscopy of II Pegasi: Coronal Temperature Structure, Abundances, and Variability
• Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE
• A small survey of the magnetic fields of planet-host stars
• No Sun-like dynamo on the active star $\zeta$ Andromedae from starspot asymmetry
• Element Abundances: A New Diagnostic for the Solar Wind
• The Structure of Stellar Coronae in Active Binary Systems
• X-ray properties of active M dwarfs as observed by XMM-Newton
• Coronal density diagnostics with Helium-like triplets: CHANDRA--LETGS observations of Algol, Capella, Procyon, Eps Eri, Alpha Cen A&B, UX Ari, AD Leo, YY Gem, and HR1099
• The diameter and evolutionary state of Procyon A
• Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity
• Incidence of debris discs around FGK stars in the solar neighbourhood
• On the Limb Darkening, Spectral Energy Distribution, and Temperature Structure of Procyon
• The Coronae of AR Lac
• Non-WKB Models of the FIP Effect: The Role of Slow Mode Waves
• Resolving the Effects of Rotation in Altair with Long-Baseline Interferometry
• A survey of stellar X-ray flares from the XMM-Newton serendipitous source catalogue: Hipparcos-Tycho cool stars
• Estimating activity cycles with probabilistic methods II. The Mount Wilson Ca H&K data
• SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
• New Photometry and Spectra of AB Doradus C: An Accurate Mass Determination of a Young Low-Mass Object with Theoretical Evolutionary Tracks
• Coronal versus photospheric abundances of stars with different activity levels
• The First Ionization Potential Effect from the Ponderomotive Force: On the Polarization and Coronal Origin of the Alfven Waves
• Young Stars Near Earth: The Octans-Near Association and Castor Moving Group
• Exploring the magnetic field complexity in M dwarfs at the boundary to full convection
• Rotation Period Evolution in Low-Mass Binary Stars: The Impact of Tidal Torques and Magnetic Braking
• Parent Stars of Extrasolar Planets. VIII. Chemical Abundances for 18 Elements in 31 Stars
• A Chandra/LETGS Survey of Main Sequence Stars
• The large-scale magnetic field of Proxima Centauri near activity maximum
• Forward modelling of brightness variations in Sun-like stars I. Emergence and surface transport of magnetic flux
• Magnetic Field of the Eclipsing M Dwarf Binary YY Gem
• Chemical Abundances from Inversions of Stellar Spectra: Analysis of Solar-Type Stars with Homogeneous and Static Model Atmospheres
• Ca II H&K stellar activity parameter: a proxy for stellar Extreme Ultraviolet Fluxes
• Altair - the 'hottest' magnetically active star in X-rays
• The Visual Orbit of the 1.1-day Spectroscopic Binary σ^2 Coronae Borealis from Interferometry at the CHARA Array
• Transient Inverse-FIP Plasma Composition Evolution within a Confined Solar Flare
• Magnetic modeling of inflated low-mass stars using interior fields no larger than ~10 kilogauss
• A Solar cycle correlation of coronal element abundances in Sun-as-a-star observations
• The size of ABDorA from VLTI/AMBER interferometry
• Common dynamo scaling in slowly rotating young and evolved stars
• Identifying the number of clusters for K-Means: A hypersphere density based approach
• An investigation of chromospheric activity spanning the Vaughan--Preston gap: impact on stellar ages
• The beta Pictoris association: Catalog of photometric rotational periods of low-mass members and candidate members
• The Age and Stellar Parameters of the Procyon Binary System
• The FIP and Inverse FIP Effects in Solar Flares
• The Coronal Abundance Anomalies of M Dwarfs
• Precise radial velocities of giant stars. X. Bayesian stellar parameters and evolutionary stages for 372 giant stars from the Lick planet search
• Spectral energy distribution for GJ406
• Planet Detectability in the Alpha Centauri System
• Coronal Emission Measures and Abundances for Moderately Active K Dwarfs Observed by Chandra
• The Coronae of AB Dor and V471 Tau: Primordial angular momentum vs tidal spin-up
• First long-term activity study of AU Microscopii: a possible chromospheric cycle
• Inverse FIP Effects in Giant Solar Flares Found from Earth X-Ray Albedo with Suzaku/XIS
• The Mass-Activity relationships in M and K dwarfs. I. Stellar parameters of our sample of M and K dwarfs
• Coronal properties of the EQ Peg binary system
• Antisolar differential rotation of the K1-giant sigma Geminorum revisited
• Multi-wavelength variability of the young solar analog iota Hor. X-ray cycle, star spots, flares, and UV emission
• Stellar Coronae, Solar Flares: a Detailed Comparison of sigma Gem, HR 1099, and the Sun in High-resolution X-rays
• The Penn State - Toruń Centre for Astronomy Planet Search stars IV. Dwarfs and the complete sample
• A 33 year constancy of the X-ray coronae of AR Lac and eclipse diagnosis of scale height
• Some Like it Hot: The X-Ray Emission of The Giant Star YY Mensae
• The chemical composition of $\alpha$ Cen AB revisited
• Can Sub-photospheric Magnetic Reconnection Change the Elemental Composition in the Solar Corona?
• Measuring differential rotation of the K-giant $\zeta$\,And
• Magnetic field structure in single late-type giants: Beta Ceti in 2010 - 2012
• The photospheric abundances of active binaries I Detailed analysis of HD 113816 (IS Vir) and HD 119285 (V851 Cen)
• The CARMENES search for exoplanets around M dwarfs. A super-Earth planet orbiting HD 79211 (GJ 338 B)
• The Coronal Abundances of Mid-F Dwarfs
• On the Iron Abundance Anomaly in K-dwarf and Hyades Stars
• Accurate effective temperature from H$\alpha$ profiles
• Chromosphere of K giant stars Geometrical extent and spatial structure detection
• Magnetic activity of the young solar analogue V1358 Ori
• A confined dynamo: magnetic activity of the K-dwarf component in the pre-cataclysmic binary system V471 Tauri
• Evidence of the FIP effect in the coronae of late-type giants
• FK Comae Berenices, King of Spin: The COCOA-PUFS Project
• Wave Propagation at Oblique Shocks: How Did Tycho Get Its Stripes?
• Coronae of Stars with Super Solar Elemental Abundances
• The Fundamental Stellar Parameters of FGK Stars in the SEEDS Survey
• Close Binaries with Infrared Excess: Destroyers of Worlds?
• The effect of emission lines on the performance of photometric redshift estimation algorithms
• Observing the changing surface structures of the active K giant sigma Gem with SONG
• The Fermi GBM GRBs' multivariate statistics
• Structure and variability in the corona of the ultrafast rotator LO Peg

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• Understanding the Relationship between Solar Coronal Abundances and F10.7 cm Radio Emission
• Stellar flare morphology with TESS across the main sequence
• Reeling in the Whirlpool: the distance to M 51 clarified by Cepheids and the Type IIP SN 2005cs
• Starspots on eclipsing giant stars I.: The sample and eclipse mapping examples
• XRISM view of a stellar flare: High-resolution Fe K spectra of HR 1099, an RS CVn-type star
• Detection of stellar-like abundance anomalies in the slow solar wind