{"paper":{"title":"First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"1), (10) Institute of Astronomy, (11) Jodrell Bank Centre for Astrophysics, (12) IRAM, (13) European Southern Observatory, (14) Korea Astronomy, (15) Leiden Observatory, (16) National Research Council Herzberg Astronomy & Astrophysics, (2) National Radio Astronomy Observatory, (3) Joint ALMA Observatory, 4), (4) European Southern Observatory, (5) Astrophysics Group, 6), (6) National Astronomical Observatory of Japan, 7), (7) Institute of Space, (8) Istituto di Radioastronomia, (9) Institut de Planetologie et d'Astrophysique de Grenoble, Academia Sinica, A. Castro-Carrizo (12), A. Hirota (3, A. Kawamura (6), ALMA Partnership, A. Mignano (8), A. M. S. Richards (11), A. Remijan (3, A. S. Hales (3, Astronautical Science (ISAS), Astrophysics, A. Wootten (1), B. Nikolic (5), Bologna, B. Vila Vilaro (3, Canada), Cavendish Laboratory, C.-F. Lee (10), Charlottesville, Chile, C. L. Brogan (1), C. Lopez (3), C. M. V. Impellizzeri (3, C. Ubach (1), C. Vlahakis (3, D. Barkats (3, D. Broguiere (12), D. Espada (3, D. Garcia-Appadoo (3, E. Akiyama (6), E. B. Fomalont (3, E. Chapillon (12), E. Liuzzo (8), E. M. Humphreys (13), E. Villard (3, F. Galarza (3), F. Gueth (12), F. Morales (3), France, Germany, G. Marconi (3, G. Schieven (16), H. Francke (3), H.-Y. Liu (10), I. de Gregorio-Monsalvo (3, Italy, I. Toledo (3), J. A. Hodge (1), Japan, Japan Aerospace Exploration Agency (JAXA), J. A. Rodon (4), J. Di Francesco (16), J. E. Hibbard (1), J. Gallardo (3), J. Garcia (3), J. Mangum (1), J. R. Cortes (3, K. Nakanishi (3, Korea, K. Plarre (3), K. Saigo (6), K. Tatematsu (6) ((1) National Radio Astronomy Observatory, L. -A. Nyman (3, L. C. Watson (4), Leiden University, L. Guzman-Ramirez (4), L. M. Perez (2), L. Testi (13), L. Videla (3), M. Radiszcz (3), N. Marcelino (8), N. Phillips (3, P. Andreani (13), P. C. Cortes (3, P. Sanhueza (6), Q. Nguyen Luong (6), R. Aladro (4), R. A. Laing (13), R. Hills (5), R. Kneissl (3, R. Lucas (9), R. P. J. Tilanus (15), S. Corder (3, S. Gonzalez (3), S. Kameno (3, S. Leon (3, S. Matsushita (10), Socorro, Space Science Institute, S. Takahashi (3, S. Takakuwa (10), Taiwan, The Netherlands, T. Hill (3, T. Jung (14), T. Kaminski (4), T. R. Hunter (1), T. Sawada (3, T. van Kempen (15), T. Wiklind (3, UK, University of Manchester, USA, V. Pietu (12), W. R. F. Dent (3, Y. Asaki (6, Y. Kurono (3","submitted_at":"2015-03-09T19:52:53Z","abstract_excerpt":"We present Atacama Large Millimeter/submillimeter Array (ALMA) observations from the 2014 Long Baseline Campaign in dust continuum and spectral line emission from the HL Tau region. The continuum images at wavelengths of 2.9, 1.3, and 0.87 mm have unprecedented angular resolutions of 0.075 arcseconds (10 AU) to 0.025 arcseconds (3.5 AU), revealing an astonishing level of detail in the circumstellar disk surrounding the young solar analogue HL Tau, with a pattern of bright and dark rings observed at all wavelengths. By fitting ellipses to the most distinct rings, we measure precise values for t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.02649","kind":"arxiv","version":3},"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"}