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Absolute Magnitudes of Seismic Red Clumps in the Kepler Field and SAGA: The Age Dependency of the Distance Scale

Chen, Y. H.; Casagrande, Luca; Zhao, G; Bovy, Jo; Aguirre, V Silva; Zhao, Jingkun; Jia, Yunpeng

Description

Red clump stars are fundamental distance indicators in astrophysics, although theoretical stellar models predict a dependence of absolute magnitudes with age. 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...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/217821
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/aa6d0f

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