{"paper":{"title":"The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC. I.: New Insights on the stellar halo up to 120 kpc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Carrie Filion, Evan N. Kirby, Itsuki Ogami, Ivanna Escala, Jason S. Kalirai, Karoline M. Gilbert, Kohei Hayashi, Masao Mori, Masashi Chiba, Masayuki Tanaka, Miho N. Ishigaki, Mikito Tanaka, Myung Gyoon Lee, Puragra Guhathakurta, Robert H. Lupton, Rosemary F. G. Wyse, Sanjib Sharma, Takanobu Kirihara, Yutaka Komiyama","submitted_at":"2024-01-01T05:17:34Z","abstract_excerpt":"We analyse the M31 halo and its substructure within a projected radius of 120 kpc using a combination of Subaru/HSC $\\textit{NB515}$ and CFHT/MegaCam $\\textit{g}$- \\& $\\textit{i}$-bands. We succeed in separating M31's halo stars from foreground contamination with $\\sim$ 90 \\% accuracy by using the surface gravity sensitive $\\textit{NB515}$ filter. Based on the selected M31 halo stars, we discover three new substructures, which associate with the Giant Southern Stream (GSS) based on their photometric metallicity estimates. We also produce the distance and photometric metallicity estimates for t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.00668","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2401.00668/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}