{"paper":{"title":"An Adaptive Optics Survey of Stellar Variability at the Galactic Center","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Abhimat Krishna Gautam., Andrea M. Ghez, Eric E. Becklin, Gregory D. Martinez, Gunther Witzel, Jessica R. Lu, Keith Matthews, Mark R. Morris, Matthew W. Hosek Jr., Shoko Sakai, Siyao Jia, Tuan Do","submitted_at":"2018-11-12T18:38:21Z","abstract_excerpt":"We present a $\\approx 11.5$ year adaptive optics (AO) study of stellar variability and search for eclipsing binaries in the central $\\sim 0.4$ pc ($\\sim 10''$) of the Milky Way nuclear star cluster. We measure the photometry of 563 stars using the Keck II NIRC2 imager ($K'$-band, $\\lambda_0 = 2.124 \\text{ } \\mu \\text{m}$). We achieve a photometric uncertainty floor of $\\Delta m_{K'} \\sim 0.03$ ($\\approx 3\\%$), comparable to the highest precision achieved in other AO studies. Approximately half of our sample ($50 \\pm 2 \\%$) shows variability. $52 \\pm 5\\%$ of known early-type young stars and $43"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.04898","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}