{"paper":{"title":"Spitzer and Magellan Observations of NGC 2264: A Remarkable Star Forming Core Near IRS-2","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) CfA, 3), (3)Dept. de F\\'isica, (4) Observatories Carnegie Institution Washington, (5) JPL), A.K. Mainzer(5) ((1)Steward Observatory, C.J. Lada(2), D.C. Murphy (4), E.T. Young (1), Faculdade de Ci\\^encias de Universidade de Lisboa, J. Muzerolle(1), Lisbon, M. Marengo(2), N. Siegler(1), O. Krause(1), Portugal, P.S. Teixeira (2, S.E. Persson(4)","submitted_at":"2006-01-13T19:25:33Z","abstract_excerpt":"We analyze {\\it Spitzer} and Magellan observations of a star forming core near IRS-2 in the young cluster NGC 2264. The submillimeter source IRAS 12 S1, previously believed to be an intermediate mass Class 0 object is shown to be a dense collection of embedded, low mass stars. We argue that this group of stars represents the fragmenting collapse of a dense, turbulent core, based on a number of indicators of extreme youth. With reasonable estimates for the velocity dispersion in the group, we estimate a dynamical lifetime of only a few x 10$^{4}$ years. Spectral energy distributions of stars in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0601300","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"}