The realm of Aurora. Density distribution of metal-poor giants in the heart of the Galaxy

The realm of Aurora. Density distribution of metal-poor giants in the heart of the Galaxy

The innermost portions of the Milky Way's stellar halo have avoided scrutiny until recently. The lack of wide-area survey data, made it difficult to reconstruct an uninterrupted view of the density distribution of the metal-poor stars inside the Solar radius. In this study, we utilize red giant...

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Hauptverfasser: Kurbatov, Evgeny P, Belokurov, Vasily, Koposov, Sergey, Kravtsov, Andrey, Davies, Elliot Y, Brown, Anthony G. A, Cantat-Gaudin, Tristan, Castro-Ginard, Alfred, Casey, Andrew R, Drimmel, Ronald, Fouesneau, Morgan, Khanna, Shourya, Rix, Hans-Walter, Wallace, Alex
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Sprache:eng
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Physics - Astrophysics of Galaxies
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Zusammenfassung:The innermost portions of the Milky Way's stellar halo have avoided scrutiny until recently. The lack of wide-area survey data, made it difficult to reconstruct an uninterrupted view of the density distribution of the metal-poor stars inside the Solar radius. In this study, we utilize red giant branch (RGB) stars from Gaia, with metallicities estimated using spectro-photometry from Gaia Data Release 3. Accounting for Gaia's selection function, we examine the spatial distribution of metal-poor ([M/H]
DOI:10.48550/arxiv.2410.22250