{"paper":{"title":"Giant Molecular Clouds and Star Formation in the Tidal Molecular Arm of NGC 4039","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"A. E. Higuchi, A. Kawamura, A. Trejo, D. Espada, D. Iono, E. Akiyama, E. Chapillon, E. Muller, H. Nagai, K. Nakanishi, K. Saigo, K. Tachihara, K. Tatematsu, M. Hiramatsu, M. Saito, N. Mizuno, R. E. Miura, S. Iguchi, S. Komugi, S. Matsushita, S. Takahashi, T. Hasegawa, T. Kamazaki, T. Sawada, Y. Kurono, Y. N. Su","submitted_at":"2012-11-05T05:35:29Z","abstract_excerpt":"The properties of tidally induced arms provide a means to study molecular cloud formation and the subsequent star formation under environmental conditions which in principle are different from quasi stationary spiral arms. We report the properties of a newly discovered molecular gas arm of likely tidal origin at the south of NGC 4039 and the overlap region in the Antennae galaxies, with a resolution of 1\"68 x 0\"85, using the Atacama Large Millimeter/submillimeter Array science verification CO(2-1) data. The arm extends 3.4 kpc (34\") and is characterized by widths of ~ 200 pc (2\") and velocity "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0767","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"}