The Solar Twin Planet Search: The age - chromospheric activity relation

Abstract

It is well known that the magnetic activity of solar type stars decreases with age, but it is widely debated in the literature whether there is a smooth decline or if there is an early sharp drop until 1-2 Gyr followed by a relatively inactive constant phase. We revisited the activity-age relation using time-series observations of a large sample of solar twins whose precise isochronal ages and other important physical parameters have been determined. We measured the Ca II H and K activity indices using 9000 HARPS spectra of 82 solar twins. We measured an average solar activity of $S_{\mathrm{MW}}$ = 0.1712 $\pm$ 0.0017 during solar magnetic cycles 23$-$24 covered by HARPS observations and we also inferred an average of $S_{\mathrm{MW}}$ = 0.1694 $\pm$ 0.0025 for cycles 10$-$24, anchored on a S index vs. sunspot number correlation. Also, a simple relation between the average and dispersion of the activity levels of solar twins was found. This enabled us to predict the stellar variability effects on the age-activity diagram and, consequently, estimate the chromospheric age uncertainties due to the same phenomena. The age-activity relation is still statistically significant up to ages around 6$-$7 Gyr, in agreement with previous works using open clusters and field stars with precise ages. Our research confirms that Ca II H \& K lines remain a useful chromospheric evolution tracer until stars reach ages of at least 6$-$7 Gyr. We found an evidence that, for the most homogeneous set of old stars, the chromospheric activity indices seem to continue decreasing after the solar age towards the end of the main-sequence. Our results indicate that a significant part of the scatter observed in the age-activity relation of solar twins can be attributed to stellar cycle modulations effects. The Sun seems to have a normal activity level and variability for its age.

arXiv comment14 pages, 8 figures, 3 Tables. Accepted for publication in A&A. [Abridged abstract]

References in corpus (65)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics
• Ages for illustrative field stars using gyrochronology: viability, limitations and errors
• Evolution of the Solar Activity over Time and Effects on Planetary Atmospheres: I. High-energy Irradiances (1-1700 A)
• Towards Better Age Estimates for Stellar Populations: The Y^2 Isochrones for Solar Mixture
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• The Ages of Stars
• Chromospheric CaII Emission in Nearby F, G, K, and M stars
• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
• The peculiar solar composition and its possible relation to planet formation
• Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
• The YY Isochrones for alpha-element Enhanced Mixtures
• 3D maps of the local ISM from inversion of individual color excess measurements
• A spin-down clock for cool stars from observations of a 2.5-billion-year-old cluster
• High-precision abundances of elements in solar twin stars: Trends with stellar age and elemental condensation temperature
• Oxygen Abundances in Nearby FGK Stars and the Galactic Chemical Evolution of the Local Disk and Halo
• The Kepler Cluster Study: Stellar Rotation in NGC6811
• Lithium abundances in nearby FGK dwarf and subgiant stars: internal destruction, Galactic chemical evolution, and exoplanets
• Magnetic Cycles and Rotation Periods of Late Type Stars from photometric time series
• Isochrone ages for field dwarfs: method and application to the age-metallicity relation
• Rotation periods of late-type dwarf stars from time-series high-resolution spectroscopy of chromospheric indicators
• The Solar Twin Planet Search. I. Fundamental parameters of the stellar sample
• Radius Dependent Angular Momentum Evolution in Low-Mass Stars. I
• Magnetic activity in the HARPS M-dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK
• The remarkable solar twin HIP 56948: a prime target in the quest for other Earths
• The Chemical Homogeneity of Sun-like Stars in the Solar Neighborhood
• Angular Momentum Loss from Cool Stars: An Empirical Expression and Connection to Stellar Activity
• Chromospheric activity as age indicator
• Elemental abundance differences in the 16 Cygni binary system: a signature of gas giant planet formation?
• The Age-Activity-Rotation Relationship in Solar-Type Stars
• The Mount Wilson Observatory S-index of the Sun
• Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
• Rotation periods for cool stars in the 4 Gyr-old open cluster M67, the solar-stellar connection, and the applicability of gyrochronology to at least solar age
• Chromospheric Activities and Kinematics for Solar Type Dwarfs and Subgiants: Analysis of the Activity Distribution and the AVR
• 18 Sco: a solar twin rich in refractory and neutron-capture elements. Implications for chemical tagging
• The Solar Twin Planet Search III. The [Y/Mg] clock: estimating stellar ages of solar-type stars
• The nucleosynthetic history of elements in the Galactic disk: [X/Fe] - age relations from high-precision spectroscopy
• An Activity Catalogue of Southern Stars
• Metallicity effects on the chromospheric activity-age relation for late-type dwarfs
• Correlation between lithium abundances and ages of solar twin stars
• Magnetic field and wind of Kappa Ceti: towards the planetary habitability of the young Sun when life arose on Earth
• The UBV(RI)c colors of the Sun
• Rotation periods and ages of solar analogs and solar twins revealed by the Kepler Mission
• Age and mass of solar twins constrained by lithium abundance
• Planet signatures and effect of the chemical evolution of the Galactic thin-disk stars
• Reconstructing the Solar Wind From Its Early History To Current Epoch
• Permitted Oxygen Abundances and the Temperature Scale of Metal-Poor Turn-Off Stars
• An Improved Age-Activity Relationship for Cool Stars older than a Gigayear
• The Solar Twin Planet Search. V. Close-in, low-mass planet candidates and evidence of planet accretion in the solar twin HIP 68468
• Time evolution of high-energy emissions of low-mass stars:I. Age determination using stellar chronology with white dwarfs in wide binaries
• Correlation Between Sunspot Number and ca II K Emission Index
• Mg II h + k emission lines as stellar activity indicators of main sequence F-K stars
• The age-mass-metallicity-activity relation for solar-type stars: Comparisons with asteroseismology and the NGC 188 open cluster
• Towards precise ages for single stars in the field. Gyrochronology constraints at several Gyr using wide binaries. I. Ages for initial sample
• A dynamo model of magnetic activity in solar-like stars with different rotational velocities
• Fine structure of the chromospheric activity in Solar-type stars - The Halpha Line
• Chromospheric activity and evolutionary age of the Sun and four solar twins
• Chemo-kinematics of the Milky Way from the SDSS-III MARVELS Survey
• The Solar Twin Planet Search II. A Jupiter twin around a solar twin
• Fine structure of the age-chromospheric activity relation in solar-type stars I: The Ca II infrared triplet: Absolute flux calibration
• Spectroscopic binaries in the Solar Twin Planet Search program: from substellar-mass to M dwarf companions
• No "Maunder minimum" candidates in M67: mitigating interstellar contamination of chromospheric emission lines
• HIP 10725: The First Solar Twin/Analogue Field Blue Straggler
• Dependence of stellar magnetic activity cycles on rotational period in nonlinear solar-type dynamo

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