http://stacks.iop.org/1538-3881 Founded in 1849 by Benjamin A. Gould, the AJ publishes original astronomical research, with an emphasis on significant scientific results derived from observations, including descriptions of data capture, surveys, analysis techniques, and astrophysical interpretation. It takes a broad view of astronomy, extending from the solar system to observational cosmology with a tradition of papers discussing dynamical processes. The AJ serves an international community that includes authors, scientists and students through efficient and accessible communication of the science and associated techniques. en-gb Copyright © IOP Publishing 2011 Thu, 01 Jan 1970 00:00:00 GMT Thu, 01 Jan 1970 00:00:00 GMT http://syndication.iop.org/about/ custserv@iop.org (Customer Services) http://images.iop.org/website-logos/ejs_logo.png http://stacks.iop.org/ http://stacks.iop.org/1538-3881/142/i=2/a=58?rss=2.0 Author(s): Bradley W. Rush, John P. Wisniewski and Karen S. Bjorkman<br>Affiliation(s): Department of Physics & Astronomy, University of Toledo, 2801 W. Bancroft St., Toledo, OH 43606-3390, USA; Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195, USA; Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, under contract with the National Science Foundation.; NSF Astronomy & Astrophysics Postdoctoral Fellow. Thu, 14 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=59?rss=2.0 Author(s): Heather R. Jacobson, Catherine A. Pilachowski and Eileen D. Friel<br>Affiliation(s): Department of Physics & Astronomy, Michigan State University, East Lansing, MI 48823, USA; Department of Astronomy, Indiana University, Bloomington, IN 47405, USA; Department of Astronomy, Boston University, Boston, MA 02215, USA; National Science Foundation Astronomy and Astrophysics Postdoctoral Fellow. Thu, 14 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=60?rss=2.0 Author(s): Julian C. van Eyken, David R. Ciardi, Luisa M. Rebull, John R. Stauffer, Rachel L. Akeson, Charles A. Beichman, Andrew F. Boden, Kaspar von Braun, Dawn M. Gelino, D. W. Hoard, Steve B. Howell, Stephen R. Kane, Peter Plavchan, Solange V. Ramirez, Joshua S. Bloom, S. Bradley Cenko, Mansi M. Kasliwal, Shrinivas R. Kulkarni, Nicholas M. Law, Peter E. Nugent, Eran O. Ofek, Dovi Poznanski, Robert M. Quimby, Carl J. Grillmair, Russ Laher, David Levitan, Sean Mattingly and Jason A. Surace<br>Affiliation(s): NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91125, USA; Spitzer Science Center/Caltech, M/S 220-6, Pasadena, CA 91125, USA; Caltech Optical Observatories, California Institute of Technology, Pasadena, CA 91125, USA; National Optical Astronomy Observatory, Tucson, AZ 85719, USA; NASA Ames Research Center, M/S 244-30, Moffett Field, CA 94035, USA; Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA; Dunlap Institute for Astronomy and Astrophysics, University of Toronto, Toronto M5S 3H4, Ontario, Canada; Computational Cosmology Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; Spitzer Science Center, M/S 220-6, California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 91125, USA; Department of Physics, California Institute of Technology, Pasadena, CA 91125, USA; Department of Physics and Astronomy, The University of Iowa, Iowa City, IA 52242, USA; Einstein Fellow. Thu, 14 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=54?rss=2.0 Author(s): Geoffrey C. Clayton, O. De Marco, B. A. Whitney, B. Babler, J. S. Gallagher, J. Nordhaus, A. K. Speck, M. J. Wolff, W. R. Freeman, K. A. Camp, W. A. Lawson, J. Roman-Duval, K. A. Misselt, M. Meade, G. Sonneborn, M. Matsuura and M. Meixner<br>Affiliation(s): Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA; Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109, Australia; Space Science Institute, Boulder, CO 80301, USA; bwhitney; Department of Astronomy, University of Wisconsin, Madison, WI 53706, USA; brian; Department of Mathematics, Physics, & Computer Science, Raymond Walters College, University of Cincinnati, Blue Ash, OH 45236, USA; Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Physics & Astronomy, University of Missouri, Columbia, MO 65211, USA; School of PEMS, University of New South Wales, Australian Defence Force Academy, Canberra 2610, Australia; STScI, Baltimore, MD 21218, USA; duval; Steward Observatory, University of Arizona, Tucson, AZ 85721, USA; Observational Cosmology Laboratory Code 665, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA; Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK; MSSL, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK Wed, 13 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=56?rss=2.0 Author(s): William I. Hartkopf and Brian D. Mason<br>Affiliation(s): U.S. Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392-5420, USA Wed, 13 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=55?rss=2.0 Author(s): Thompson S. Le Blanc, Kevin R. Covey and Keivan G. Stassun<br>Affiliation(s): Department of Physics & Astronomy, Vanderbilt University, 6301 Stevenson Center, Nashville, TN 37235, USA; Department of Astronomy, Cornell University, 226 Space Sciences Building, Ithaca, NY 14853, USA; Department of Physics, Fisk University, 1000 17th Avenue North, Nashville, TN 37208, USA; NASA Graduate Student Research Fellow.; Hubble Fellow. Wed, 13 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=57?rss=2.0 Author(s): Christopher R. Gelino, J. Davy Kirkpatrick, Michael C. Cushing, Peter R. Eisenhardt, Roger L. Griffith, Amanda K. Mainzer, Kenneth A. Marsh, Michael F. Skrutskie and Edward L. Wright<br>Affiliation(s): Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA; NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA; Department of Astronomy, University of Virginia, Charlottesville, VA 22903, USA; Astronomy Department, University of California, Los Angeles, P.O. Box 951547, Los Angeles, CA 90095, USA Wed, 13 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=53?rss=2.0 Author(s): Bernard J. McNamara, Thomas E. Harrison, Barbara E. McArthur and G. Fritz Benedict<br>Affiliation(s): Department of Astronomy, New Mexico State University, Box 30001, MSC 4500, Las Cruces, NM 88003-8001, USA; McDonald Observatory, University of Texas, Austin, TX 78712, USA Mon, 11 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=52?rss=2.0 Author(s): Andrej Prsa, Joshua Pepper and Keivan G. Stassun<br>Affiliation(s): Department of Astronomy and Astrophysics, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085, USA; Physics and Astronomy Department, Vanderbilt University, 2201 West End Avenue, Nashville, TN 37235, USA; Department of Physics, Fisk University, 1000 17th Avenue North, Nashville, TN 37208, USA Mon, 11 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=51?rss=2.0 Author(s): R. E. Luck, S. M. Andrievsky, V. V. Kovtyukh, W. Gieren and D. Graczyk<br>Affiliation(s): Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7215, USA; Department of Astronomy and Astronomical Observatory, Odessa National University, Isaac Newton Institute of Chile, Odessa Branch, Shevchenko Park, 65014 Odessa, Ukraine; GEPI, Observatoire de Paris-Meudon, CNRS, Universite Paris Diderot, 92125 Meudon Cedex, France; Departamento de Astronomia, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile Wed, 06 Jul 2011 23:00:00 GMT http://stacks.iop.org/1538-3881/142/i=2/a=50?rss=2.0 Author(s): Scott W. Fleming, Pierre F. L. Maxted, Leslie Hebb, Keivan G. Stassun, Jian Ge, Phillip A. Cargile, Luan Ghezzi, Nathan M. De Lee, John Wisniewski, Bruce Gary, G. F. Porto de Mello, Leticia Ferreira, Bo Zhao, David R. Anderson, Xiaoke Wan, Coel Hellier, Pengcheng Guo, Richard G. West, Suvrath Mahadevan, Don Pollacco, Brian Lee, Andrew Collier Cameron, Julian C. van Eyken, Ian Skillen, Justin R. Crepp, Duy Cuong Nguyen, Stephen R. Kane, Martin Paegert, Luiz Nicolaci da Costa, Marcio A. G. Maia and Basilio X. Santiago<br>Affiliation(s): Department of Astronomy, University of Florida, Gainesville, FL 32611, USA; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK; Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA; Department of Physics, Fisk University, Nashville, TN 37208, USA; Observatorio Nacional, 20921-400 Sao Cristovao, Rio de Janeiro, RJ, Brazil; Laboratorio Interinstitucional de e-Astronomia--LIneA, RJ 20921-400, Rio de Janeiro, Brazil; Department of Astronomy, University of Washington, Seattle, WA 98195, USA; Observatorio do Valongo, Universidade Federal do Rio de Janeiro, CEP: 20080-090, Rio de Janeiro, RJ, Brazil; Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK; Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, University Park, PA 16802, USA; Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast, BT7 1NN, UK; SUPA, School of Physics & Astronomy, University of St. Andrews, North Haugh, KY16 9SS, St. Andrews, Fife, UK; NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125, USA; Isaac Newton Group of Telescopes, E-38700 Santa Cruz de la Palma, Canary Islands, Spain; Department of Astronomy, California Institute of Technology, Pasadena, CA 91125, USA; Instituto de Fisica, UFRGS, Porto Alegre, RS 91501-970, Brazil Wed, 06 Jul 2011 23:00:00 GMT