Absolute Magnitudes of Seismic Red Clumps in the Kepler Field and SAGA: the age dependency of the distance scale

Abstract

Red clump stars are fundamental distance indicators in astrophysics, although theoretical stellar models predict a dependence of absolute magnitudes with ages. This effect is particularly strong below 2 Gyr, but even above this limit a mild age dependence is still expected. We use seismically identified red clump stars in the Kepler field for which we have reliable distances, masses and ages from the SAGA survey to first explore this effect. By excluding red clump stars with masses larger than 1.6 Msun (corresponding to ages younger than 2 Gyr), we derive robust calibrations linking intrinsic colors to absolute magnitudes in the following photometric systems: Strömgren $by$, Johnson $BV$, Sloan $griz$, 2MASS $JH{K}_s$ and WISE $W1W2W3$. With the precision achieved we also detect a slope of absolute magnitudes 0.020(0.003) mag per Gyrin the infrared, implying that distance calibrations of clump stars can be off by up to 0.2 mag in the infrared (over the range from 2 Gyr to 12 Gyr) if their ages are unknown. Even larger uncertainties affect optical bands, because of the stronger interdependency of absolute magnitudes on colors and age. Our distance calibrations are ultimately based on asteroseismology, and we show how the distance scale can be used to test the accuracy of seismic scaling relations. Within the uncertainties our calibrations are in agreement with those built upon local red clump with Hipparcos} parallaxes, although we find a tension which if confirmed would imply that scaling relations overestimate radii of red clump stars by 2(+-20%. Data-releases post Gaia DR1 will provide an important testbed for our results.

arXiv comment26 pages, 8 figures, accepted by ApJ

References in corpus (40)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Kepler Input Catalog: Photometric Calibration and Stellar Classification
• The CoRoT satellite in flight : description and performance
• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
• Kepler Asteroseismology Program: Introduction and First Results
• Distance to M31 With the HST and Hipparcos Red Clump Stars
• The Sloan Digital Sky Survey Monitor Telescope Pipeline
• Population effects on the Red Giant Clump absolute magnitude, and distance determinations to nearby galaxies
• Calculating asteroseismic diagrams for solar-like oscillations
• Synthetic Stellar Photometry - I. General considerations and new transformations for broad-band systems
• A Revised Effective Temperature Scale for the Kepler Input Catalog
• Fundamental Properties of Stars using Asteroseismology from Kepler & CoRoT and Interferometry from the CHARA Array
• Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
• Galactocentric Distance With the OGLE and Hipparcos Red Clump Stars
• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• Lifting the Dusty Veil With Near- and Mid-Infrared Photometry: I. Description and Applications of the Rayleigh-Jeans Color Excess Method
• Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler
• Bayesian distances and extinctions for giants observed by Kepler and APOGEE
• Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
• A secondary clump of red giant stars: why and where
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• Interferometric radii of bright Kepler stars with the CHARA Array: θ Cygni and 16 Cygni A and B
• Probing populations of red giants in the galactic disk with CoRoT
• WIYN Open Cluster Study. X. The K-Band Magnitude of the Red Clump as a Distance Indicator
• Stroemgren survey for Asteroseismology and Galactic Archaeology: let the SAGA begin
• Fine structure of the red giant clump from HIPPARCOS data, and distance determinations based on its mean magnitude
• Testing convective-core overshooting using period spacings of dipole modes in red giants
• Towards stellar effective temperatures and diameters at one per cent accuracy for future surveys
• Seismic diagnostics of red giants: first comparison with stellar models
• A new LMC K-band distance from precision measurements of nearby red clump stars
• Baade-Wesselink distances and the effect of metallicity in classical cepheids
• Testing Asteroseismic Scaling Relations using Eclipsing Binaries in Star Clusters and the Field
• Differential population studies using asteroseismology: solar-like oscillating giants in CoRoT fields LRc01 and LRa01
• First identification and absolute magnitudes of the red clump stars in the Solar neighbourhood for WISE
• The Absolute Magnitudes of Red Horizontal Branch Stars in the ugriz System
• A New Absolute Magnitude Calibration for Red Clump Stars
• Luminosity-Colour Relations for Red Clump Stars
• Absolute Magnitude Calibration for Red Clump Stars

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