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• W3025729230 startingPage "3087" @default.
• W3025729230 abstract "ABSTRACT Large pristine samples of red clump stars are highly sought after given that they are standard candles and give precise distances even at large distances. However, it is difficult to cleanly select red clumps stars because they can have the same Teff and log g as red giant branch stars. Recently, it was shown that the asteroseismic parameters, $rm {Delta }$P and $rm {Delta nu }$, which are used to accurately select red clump stars, can be derived from spectra using the change in the surface carbon to nitrogen ratio ([C/N]) caused by mixing during the red giant branch. This change in [C/N] can also impact the spectral energy distribution. In this study, we predict the $rm {Delta }$P, $rm {Delta nu }$, Teff, and log g using 2MASS, AllWISE, Gaia, and Pan-STARRS data in order to select a clean sample of red clump stars. We achieve a contamination rate of ∼20 per cent, equivalent to what is achieved when selecting from Teff and log g derived from low-resolution spectra. Finally, we present two red clump samples. One sample has a contamination rate of ∼20 per cent and ∼405 000 red clump stars. The other has a contamination of ∼33 per cent and ∼2.6 million red clump stars that includes ∼75 000 stars at distances &gt;10 kpc. For |b| &gt; 30 deg, we find ∼15 000 stars with contamination rate of ∼9 per cent. The scientific potential of this catalogue for studying the structure and formation history of the Galaxy is vast, given that it includes millions of precise distances to stars in the inner bulge and distant halo where astrometric distances are imprecise." @default.
• W3025729230 created "2020-05-21" @default.
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• W3025729230 date "2020-01-01" @default.
• W3025729230 modified "2023-10-14" @default.
• W3025729230 title "From the inner to outer Milky Way: a photometric sample of 2.6 million red clump stars" @default.
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• W3025729230 doi "https://doi.org/10.1093/mnras/staa1226" @default.
• W3025729230 hasPublicationYear "2020" @default.
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