A&A 573, A77 (2015) Astronomy DOI: 10.1051/0004-6361/201424143 & c ESO 2014 Astrophysics A resolved, au-scale gas disk around the B[e] star HD 50138?;?? L. E. Ellerbroek1, M. Benisty2;3, S. Kraus4, K. Perraut2;3, J. Kluska2;3, J. B. le Bouquin2;3, M. Borges Fernandes5, A. Domiciano de Souza6, K. M. Maaskant7;1, L. Kaper1, F. Tramper1, D. Mourard6, I. Tallon-Bosc8;9;10, T. ten Brummelaar11, M. L. Sitko12;13;???, D. K. Lynch14;15;???, and R. W. Russell14;??? 1 Anton Pannekoek Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands e-mail:
[email protected] 2 Université Grenoble Alpes, IPAG, 38000 Grenoble, France 3 CNRS, IPAG, 38000 Grenoble, France 4 School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK 5 Observatório Nacional, Rua General José Cristino 77, 20921-400 São Cristovão, Rio de Janeiro, Brazil 6 Laboratoire Lagrange, UMR 7293 UNS-CNRS-OCA, Boulevard de l’Observatoire, CS 34229, 06304 Nice Cedex 4, France 7 Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands 8 Université de Lyon, 69003 Lyon, France 9 Université Lyon 1, Observatoire de Lyon, 9 avenue Charles André, 69230 Saint Genis Laval 10 CNRS, UMR 5574, Centre de Recherche Astrophysique de Lyon; École Normale Supérieure, 69007 Lyon, France 11 The CHARA Array of Georgia State University, Mount Wilson Observatory, 91023 Mount Wilson CA, USA 12 Department of Physics, University of Cincinnati, Cincinnati OH 45221, USA 13 Space Science Institute, 4750 Walnut Street, Boulder, CO 80303, USA 14 The Aerospace Corporation, Los Angeles, CA 90009, USA 15 Thule Scientific, Topanga, CA 90290, USA Received 6 May 2014 / Accepted 17 September 2014 ABSTRACT HD 50138 is a B[e] star surrounded by a large amount of circumstellar gas and dust.