{"paper":{"title":"The massive dark halo of the compact, early-type galaxy NGC 1281","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron Dutton, Ak{\\i}n Y{\\i}ld{\\i}r{\\i}m, Bernd Husemann, Glenn van de Ven, Ignacio Mart\\'in-Navarro, Jonelle L. Walsh, Karl Gebhardt, Kayhan G\\\"ultekin, Remco van den Bosch, Ronald L\\\"asker","submitted_at":"2015-11-10T15:12:38Z","abstract_excerpt":"We investigate the compact, early-type galaxy NGC 1281 with integral field unit observations to map the stellar LOSVD out to 5 effective radii and construct orbit-based dynamical models to constrain its dark and luminous matter content. Under the assumption of mass-follows-light, the H-band stellar mass-to-light ratio (M/L) is {\\Upsilon} = 2.7(+-0.1) {\\Upsilon}_{sun}, higher than expected from our stellar population synthesis fits with either a canonical Kroupa ({\\Upsilon} = 1.3 {\\Upsilon}_{sun}) or Salpeter ({\\Upsilon} = 1.7 {\\Upsilon}_{sun}) stellar initial mass function. Such models also ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03131","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"}