{"paper":{"title":"Properties of dense cores in clustered massive star-forming regions at high angular resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) Dpt Astronomia i Meteorologia - UB, (3) Institut Ciencies de l'Espai - CSIC, (4) INAF - IAPS, (5) Dpts of Astronomy, (6) Institue of Astronomy, 7), (7) CfA, (8) CRyA - UNAM, Academia Sinica, Aina Palau (3), Alvaro Sanchez-Monge (1, Astrophysics, Carmen Juarez (3, Francesco Fontani (1), Gemma Busquet (4), Inma Sepulveda (2), Italy, Jonathan C. Tan (5), Mexico), Paul T.P. Ho (6, Physics - University of Florida, Qizhou Zhang (7), Robert Estalella (2), Spain, Stan Kurtz (8) ((1) Osservatorio Astrofisico di Arcetri - INAF, Taiwan, USA","submitted_at":"2013-04-18T13:59:07Z","abstract_excerpt":"We aim at characterising dense cores in the clustered environments associated with massive star-forming regions. For this, we present an uniform analysis of VLA NH3(1,1) and (2,2) observations towards a sample of 15 massive star-forming regions, where we identify a total of 73 cores, classify them as protostellar, quiescent starless, or perturbed starless, and derive some physical properties. The average sizes and ammonia column densities are 0.06 pc and 10^15 cm^-2, respectively, with no significant differences between the starless and protostellar cores, while the linewidth and rotational te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5136","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"}