Theoretical investigation on the mass loss impact on asteroseismic grid-based estimates of mass, radius, and age for RGB stars

Abstract

We aim to perform a theoretical evaluation of the impact of the mass loss indetermination on asteroseismic grid based estimates of masses, radii, and ages of stars in the red giant branch phase (RGB). We adopted the SCEPtER pipeline on a grid spanning the mass range [0.8; 1.8] Msun. As observational constraints, we adopted the star effective temperatures, the metallicity [Fe/H], the average large frequency spacing $\Delta \nu ,$ and the frequency of maximum oscillation power ${\nu }_{\max }$. The mass loss was modelled following a Reimers parametrization with the two different efficiencies $\eta =0.4$ and $\eta =0.8$. In the RGB phase, the average error owing only to observational uncertainty on mass and age estimates is about 8% and 30% respectively. The bias in mass and age estimates caused by the adoption of a wrong mass loss parameter in the recovery is minor for the vast majority of the RGB evolution. The biases get larger only after the RGB bump. In the last 2.5% of the RGB lifetime the error on the mass determination reaches 6.5% becoming larger than the random error component in this evolutionary phase. The error on the age estimate amounts to 9%, that is, equal to the random error uncertainty. These results are independent of the stellar metallicity [Fe/H] in the explored range. Asteroseismic-based estimates of stellar mass, radius, and age in the RGB phase can be considered mass loss independent within the range ($\eta \in [0.0,0.8]$) as long as the target is in an evolutionary phase preceding the RGB bump.

arXiv commentAccepted for publication in A&A

References in corpus (43)

• Kepler Asteroseismology Program: Introduction and First Results
• Asteroseismology of old open clusters with Kepler: direct estimate of the integrated RGB mass loss in NGC6791 and NGC6819
• The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
• The Pisa pre-main sequence tracks and isochrones. A database covering a wide range of Z, Y, mass, and age values
• Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
• A New Version of Reimers' law of Mass Loss Based on a Physical Approach
• Revised Primordial Helium Abundance Based on New Atomic Data
• Primordial Nucleosynthesis: Successes And Challenges
• Red-giant seismic properties analyzed with CoRoT
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler
• Radius determination of solar-type stars using asteroseismology: What to expect from the Kepler mission
• Characteristics of solar-like oscillations in red giants observed in the CoRoT exoplanet field
• Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
• How Good a Clock is Rotation? The Stellar Rotation-Mass-Age Relationship for Old Field Stars
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• An in-depth study of grid-based asteroseismic analysis
• Stroemgren survey for Asteroseismology and Galactic Archaeology: let the SAGA begin
• Mass loss on the red giant branch: the value and metallicity dependence of Reimers' η in globular clusters
• The Pisa Stellar Evolution Data Base for low-mass stars
• DY/DZ from fine structure in the Main Sequence based on Hipparcos parallaxes
• Oscillating red giants observed during Campaign 1 of the Kepler K2 mission: New prospects for galactic archaeology
• Galactic Archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE
• The cosmic production of Helium
• Solar Neutrino Constraints on the BBN Production of Li
• Changing the ${\nu }_{\max }$ Scaling Relation: The Need For a Mean Molecular Weight Term
• ΔY/ ΔZ from the analysis of local K dwarfs
• Effect of uncertainties in stellar model parameters on estimated masses and radii of single stars
• Automatic Determination of Stellar Parameters via Asteroseismology of Stochastically Oscillating Stars: Comparison with Direct Measurements
• Confronting uncertainties in stellar physics: calibrating convective overshooting with eclipsing binaries
• Cumulative physical uncertainty in modern stellar models I. The case of low-mass stars
• Uncertainties on the theoretical predictions for classical Cepheid pulsational quantities
• Dust, pulsation, chromospheres and their role in driving mass loss from red giants in Galactic globular clusters
• Uncertainties in grid-based estimates of stellar mass and radius. SCEPtER: Stellar CharactEristics Pisa Estimation gRid
• Statistical errors and systematic biases in the calibration of the convective core overshooting with eclipsing binaries. A case study: TZ Fornacis
• Mass Outflow from Red Giant Stars in M13, M15, and M92
• Asteroseismology of red giants as a tool for studying stellar populations: first steps
• Cumulative physical uncertainty in modern stellar models. II. The dependence on the chemical composition
• Carbon enrichment of the evolved stars in the Sagittarius dwarf spheroidal
• On the age of Galactic bulge microlensed dwarf and subgiant stars
• Grid-based estimates of stellar ages in binary systems. SCEPtER: Stellar CharactEristics Pisa Estimation gRid
• First detection of rotational CO line emission in an RGB star
• A statistical test on the reliability of the non-coevality of stars in binary systems

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