Portal de Periódicos da CAPES

THE 2014 ALMA LONG BASELINE CAMPAIGN: AN OVERVIEW

2015; IOP Publishing; Volume: 808; Issue: 1 Linguagem: Inglês

10.1088/2041-8205/808/1/l1

2041-8213

ALMA Partnership, E. B. Fomalont, C. Vlahakis, Stuartt Corder, Anthony Remijan, D. Barkats, R. Lucas, T. R. Hunter, C. L. Brogan, Yoshiharu Asaki, Satoki Matsushita, W. R. F. Dent, R. E. Hills, N. Phillips, A. M. S. Richards, P. Cox, Rodrigo Amestica, Dominique Broguière, W. D. Cotton, A. S. Hales, R. Hiriart, Akihiko Hirota, Jacqueline Hodge, C. M. Violette Impellizzeri, J. Kern, R. Kneißl, Elisabetta Liuzzo, N. Marcelino, R. G. Marson, A. Mignano, Kouichiro Nakanishi, Bojan Nikolic, José Enrique Perez Leon, Laura M. Pérez, I. Toledo, R. Aladro, Bryan Butler, Juan R. Cortés, Pierre Cortes, V. Dhawan, James Di Francesco, D. Espada, F. Galarza, D. A. Garcia-Appadoo, L. Guzmán-Ramírez, E. M. L. Humphreys, T. Jung, Seiji Kameno, R. A. Laing, S. Léon, J. G. Mangum, G. Marconi, Hiroshi Nagai, L. Å. Nyman, M. Radiszcz, J. A. Rodón, Tsuyoshi Sawada, Satoko Takahashi, R. P. J. Tilanus, T. A. van Kempen, B. Vila Vilaro, L. C. Watson, Tommy Wiklind, F. Gueth, Ken’ichi Tatematsu, A. Wootten, A. Castro‐Carrizo, E. Chapillon, G. Dumas, I. de Gregorio‐Monsalvo, H. Francke, Juan F. Gallardo, J. Garcia, S. Gonzalez, J. E. Hibbard, T. Hill, T. Kamiński, A. Karim, M. Krips, Y. Kurono, C. López, S. Martín, L. T. Maud, Farisa Y. Morales, V. Piétu, Kurt Plarre, G. Schieven, L. Testi, L. Videla, Eric Villard, Nicholas D. Whyborn, M. A. Zwaan, Filipe Alves, P. Andreani, A. Avison, M. Bárta, Francesco Bedosti, G. J. Bendo, F. Bertoldi, M. Béthermin, A. D. Biggs, J. Boissier, J. Brand, Sandra Burkutean, V. Casasola, J. E. Conway, L. Cortese, Bartosz Dąbrowski, Timothy A. Davis, María Díaz Trigo, F. Fontani, R. Franco-Hernández, G. A. Fuller, Roberto Galván-Madrid, A. Giannetti, Adam Ginsburg, Sarah Graves, E. Hatziminaoglou, M. R. Hogerheijde, Pavel Jáchym, I. Jiménez-Serra, M. Karlický, P. Klaasen, M. Kraus, D. Kunneriath, Claudia del P. Lagos, S. N. Longmore, S. Leurini, M. Maercker, B. Magnelli, I. Vidal, M. Massardi, A. Maury, S. Muehle, S. Müller, T. W. B. Muxlow, E. O’Gorman, R. Paladino, D. Petry, J. E. Pineda, S. K. Randall, John Richer, Antonio Rossetti, A. Rushton, K. L. J. Rygl, Á. Sánchez-Monge, R. Schaaf, P. Schilke, Thomas Stanke, M. Schmalzl, F. Stoehr, S. E. Urban, E. van Kampen, W. H. T. Vlemmings, Ke Wang, W. Wild, Yao-Lun Yang, Satoru Iguchi, T. Hasegawa, Masao Saito, Junji Inatani, N. Mizuno, Shin’ichiro Asayama, George Kosugi, Koh‐Ichiro Morita, Kurazo Chiba, Susumu Kawashima, S. K. Okumura, Nagayoshi Ohashi, Ryusuke Ogasawara, S. Sakamoto, Takashi Noguchi, Teddy Huang, Sheng‐Yuan Liu, F. Kemper, Patrick M. Koch, Ming‐Tang Chen, Yoshihiro Chikada, Masaaki Hiramatsu, Daisuke Iono, M. Shimojo, Shinya Komugi, J. Kim, A-Ran Lyo, Erik Muller, Cinthya N. Herrera, Rie Miura, Junko Ueda, James O. Chibueze, Yang Su, A. Trejo-Cruz, K.-S. Wang, Hitoshi Kiuchi, Nobuharu Ukita, Masahiro Sugimoto, Ryohei Kawabe, Masahiko Hayashi, S. M. Miyama, Paul T. P. Ho, N. Kaifu, M. Ishiguro, A. J. Beasley, S. Bhatnagar, J. A. Braatz, D. G. Brisbin, Nathan Brunetti, C. L. Carilli, J. H. Crossley, Larry R. D’Addario, J. L. Donovan Meyer, D. Emerson, A. Evans, P. C. Fisher, K. Golap, D. Griffith, A. Hale, Donald D Halstead, E. Hardy, M. C. Hatz, M. A. Holdaway, R. Indebetouw, P. R. Jewell, Amanda A. Kepley, D.-C. Kim, Mark Lacy, Adam K. Leroy, H. S. Liszt, Carol J. Lonsdale, Brenda C. Matthews, Mark McKinnon, B. S. Mason, G. Moellenbrock, A. Moullet, S. T. Myers, J. Ott, A. B. Peck, J. Pisano, S. J. E. Radford, W. T. Randolph, U. Rao Venkata, Mark G. Rawlings, R. Rosen, Scott Schnee, K. S. Scott, Neill Sharp, Kartik Sheth, R. Simon, T. Tsutsumi, Sarah Wood,

Astrophysics and Star Formation Studies

A major goal of the Atacama Large Millimeter/submillimeter Array (ALMA) is to make accurate images with resolutions of tens of milliarcseconds, which at submillimeter (submm) wavelengths requires baselines up to ~15 km. To develop and test this capability, a Long Baseline Campaign (LBC) was carried out from September to late November 2014, culminating in end-to-end observations, calibrations, and imaging of selected Science Verification (SV) targets. This paper presents an overview of the campaign and its main results, including an investigation of the short-term coherence properties and systematic phase errors over the long baselines at the ALMA site, a summary of the SV targets and observations, and recommendations for science observing strategies at long baselines. Deep ALMA images of the quasar 3C138 at 97 and 241 GHz are also compared to VLA 43 GHz results, demonstrating an agreement at a level of a few percent. As a result of the extensive program of LBC testing, the highly successful SV imaging at long baselines achieved angular resolutions as fine as 19 mas at ~350 GHz. Observing with ALMA on baselines of up to 15 km is now possible, and opens up new parameter space for submm astronomy.