Li abundances for solar twins in the open cluster M67

Abstract

We determine lithium (Li) abundances for solar twins in the M67 open cluster to add valuable information about the correlation between Li depletion and stellar age and, then, better understand stellar structure and evolution. We use high resolution and good signal-to-noise ratio spectra to characterize Li depletion in three solar twins from M67, using spectral synthesis in the region of the asymmetric 6707.75 Å\, Li I feature. The mean Li abundance value of A(Li)$=1.6\pm 0.2$ dex for our sample of M67 solar twins (our three stars plus a fourth solar twin from a previous analysis in the literature) presents Li abundance expected for its age. Also, the scatter estimated from the standard deviation of the Li abundances in this work is similar to the typical scatter found in a sample of field solar twins presented in the literature.

arXiv comment6 pages, 3 figures. Accepted for publication at MNRAS

References in corpus (40)

• Gaia Data Release 2: The astrometric solution
• Towards Better Age Estimates for Stellar Populations: The Y^2 Isochrones for Solar Mixture
• An absolutely calibrated effective temperature scale from the InfraRed Flux Method
• The effective temperature scale of FGK stars. II. Teff : color : [Fe/H] calibrations
• Influence of gravity waves on the internal rotation and Li abundance of solar-type stars
• The YY Isochrones for alpha-element Enhanced Mixtures
• Departures from LTE for neutral Li in late-type stars
• Time scales of Li evolution: a homogeneous analysis of open clusters from ZAMS to late-MS
• Deep Wide-Field Spectrophotometry of the Open Cluster M67
• The Solar Twin Planet Search. I. Fundamental parameters of the stellar sample
• The remarkable solar twin HIP 56948: a prime target in the quest for other Earths
• Stellar Models with Microscopic Diffusion and Rotational Mixing II: Application to Open Clusters
• 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
• Stellar Radial Velocities in the Old Open Cluster M67 (NGC 2682) I. Memberships, Binaries, and Kinematics
• Membership, lithium, and metallicity in the young open clusters IC 2602 and IC 2391: enlarging the sample
• Stellar Chemical Abundances: In Pursuit of the Highest Achievable Precision
• 18 Sco: a solar twin rich in refractory and neutron-capture elements. Implications for chemical tagging
• Solar twins in M67
• High Precision Abundances of the Old Solar Twin HIP 102152: Insights on Li Depletion from the Oldest Sun
• M67-1194, an unusually Sun-like solar twin in M67
• Deep 2MASS Photometry of M67 and Calibration of the Main Sequence J-Ks Color Difference as an Age Indicator
• Correlation between lithium abundances and ages of solar twin stars
• On using the CMD morphology of M67 to test solar abundances
• Chemical Abundances of Main-Sequence, Turnoff, Subgiant and red giant Stars from APOGEE spectra II: Atomic Diffusion in M67 Stars
• The chemical compositions of solar twins in the open cluster M67
• Age and mass of solar twins constrained by lithium abundance
• Lithium evolution in intermediate age and old open clusters: NGC 752 revisited
• A Measurement of Radius Inflation in the Pleiades and its Relation to Rotation and Lithium Depletion
• Chemical (in)homogeneity and atomic diffusion in the open cluster M67
• The Li-age correlation: the Sun is unusually Li deficient for its age
• Lithium in M67: From the main sequence to the red giant branch
• A Model of Magnetic Braking of Solar Rotation That Satisfies Observational Constraints
• The evolution of lithium depletion in young open clusters: NGC 6475
• Elemental abundances in the Blanco 1 open cluster
• Constraining the evolution of stellar rotation using solar twins
• UVES Be observations of early-G dwarfs in old clusters
• The chemical composition of the oldest nearby open cluster Ruprecht 147
• Solar twins in M67 : Evolutionary status and lithium abundance
• Lithium in the Coma Berenices open cluster
• A Revised Gyro-Age for M 67 from Kepler/K2-Campaign-5 Light Curves

Cited by in corpus (9)

• The Gaia-ESO Survey: Empirical estimates of stellar ages from lithium equivalent widths (EAGLES)
• Lithium depletion and angular momentum transport in solar-type stars
• Lithium depletion in solar analogs: age and mass effects
• Survey for Distant Solar Twins (SDST) -- I. EPIC method for stellar parameter measurement
• Stellar Population Astrophysics (SPA) with the TNG. alpha-elements, lithium, sodium and aluminum in 16 open clusters
• Angular momentum and lithium transport from main sequence to sub-giant and red giant low-mass stars
• Testing a non-local 1-equation turbulent convection model: A solar model
• Weighing stars from birth to death: mass determination methods across the HRD
• Using Lithium and Beryllium to Study Structure and Evolution of Rotating Stars