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Galactic calibration of the tip of the red giant branch

Mould, Jeremy; Clementini, G; Da Costa, Gary


Indications from Gaia data release 2 are that the tip of the red giant branch (a population II standard candle related to the helium flash in low mass stars) is close to -4 in absolute I magnitude in the Cousins photometric system. Our sample is high-latitude southern stars from the thick disk and inner halo, and our result is consistent with longstanding findings from globular clusters, whose distances were calibrated with RR Lyrae stars. As the Gaia mission proceeds, there is every reason to...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Publications of the Astronomical Society of Australia
DOI: 10.1017/pasa.2018.46
Access Rights: Open Access


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