AJ latest papers 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 2009 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) The Astronomical Journal http://images.iop.org/website-logos/ejs_logo.png http://stacks.iop.org/ Mass-to-Light Ratios for M31 Globular Clusters: Age Dating and a Surprising Metallicity Trend http://stacks.iop.org/1538-3881/138/i=2/a=547?rss=2.0 Author(s): Jay Strader, Graeme H. Smith, Soeren Larsen, Jean P. Brodie, and John P. Huchra<br>Affiliation(s): Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA; UCO/Lick Observatory, Santa Cruz, CA 95064, USA; Utrecht University, Utrecht, The Netherlands; Hubble Fellow. Mon, 29 Jun 2009 23:00:00 GMT Deep, Low Mass Ratio Overcontact Binary Systems. IX. V345 Geminorum with a Bright Visual Pair http://stacks.iop.org/1538-3881/138/i=2/a=540?rss=2.0 Author(s): Y.-G. Yang, S.-B. Qian, L.-Y. Zhu, and J.-J. He<br>Affiliation(s): School of Physics and Electric Information, Huaibei Coal Industry Teachers College, 235000 Huaibei, Anhui Province, China; National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, 650011 Kunming, China Mon, 29 Jun 2009 23:00:00 GMT Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. I. Abundances and Velocities for a Sample of Clusters http://stacks.iop.org/1538-3881/138/i=2/a=517?rss=2.0 Author(s): M. C. Parisi, A. J. Grocholski, D. Geisler, A. Sarajedini, and J. J. Claria<br>Affiliation(s): Observatorio Astronomico, Universidad Nacional de Cordoba, Laprida 854, Cordoba, CP 5000, Argentina; Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA; Departamento de Astronomia, Universidad de Concepcion, Casilla 160-C, Concepcion, CP 4030000, Chile; Department of Astronomy, University of Florida, P.O. Box 112055, Gainesville, FL 32611, USA Mon, 29 Jun 2009 23:00:00 GMT Automated Determination of [Fe/H] and [C/Fe] from Low-Resolution Spectroscopy http://stacks.iop.org/1538-3881/138/i=2/a=533?rss=2.0 Author(s): Brian Marsteller, Timothy C. Beers, Sivarani Thirupathi, Silvia Rossi, Vinicius Placco, Gillian R. Knapp, Jennifer A. Johnson, and Sara Lucatello<br>Affiliation(s): Department of Physics & Astronomy, University of California, Irvine, 2180 Frederick Reines Hall, Irvine, CA 92697-4565, USA; Department of Physics & Astronomy, CSCE: Center for the Study of Cosmic Evolution, and JINA: Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824, USA; Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055, USA; Departamento de Astronomia, Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, Universidade de Sao Paulo, Rua do Matao 1226, 05508-900 Sao Paulo, Brazil; Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Department of Astronomy, Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA; Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padua, Italy; Excellence Cluster Universe, Technische Universitat Munchen, Boltzmannstr. 2, D-85748, Garching, Germany Mon, 29 Jun 2009 23:00:00 GMT Spectroscopic Study of the N159/N160 Complex in the Large Magellanic Cloud http://stacks.iop.org/1538-3881/138/i=2/a=510?rss=2.0 Author(s): Cecilia Farina, Guillermo L. Bosch, Nidia I. Morrell, Rodolfo H. Barba, and Nolan R. Walborn<br>Affiliation(s): Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, 1900 La Plata, Argentina; IALP-CONICET, Argentina; Las Campanas Observatory, Observatories of the Carnegie Institution of Washington, La Serena, Chile; Complejo Astronomico El Leoncito, Avda. Espana 1412 Sur, San Juan, Argentina; Departamento de Fisica, Universidad de La Serena, Benavente 980, La Serena, Chile; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Mon, 29 Jun 2009 23:00:00 GMT An Optical and X-Ray Study of the Fossil Group RX J1340.6+4018 http://stacks.iop.org/1538-3881/138/i=2/a=502?rss=2.0 Author(s): Claudia L. Mendes de Oliveira, Eduardo S. Cypriano, Renato A. Dupke, and Laerte Sodre<br>Affiliation(s): Departamento de Astronomia, Instituto de Astronomia, Geofisica e Ciencias Atmosfericas da USP, Rua do Matao 1226, Cidade Universitaria, 05508-090, Sao Paulo, Brazil; Department of Physics & Astronomy, University College London, London WC1E 6BT, UK; University of Michigan, Ann Arbor, MI 48109, USA; Observatorio Nacional, Rua Gal. Jose Cristino 77, Sao Cristovao, CEP20921-400 Rio de Janeiro RJ, Brazil Mon, 29 Jun 2009 23:00:00 GMT A Search for Dust Emission in the Leo Intergalactic Cloud http://stacks.iop.org/1538-3881/138/i=2/a=452?rss=2.0 Author(s): Caroline Bot, George Helou, William B. Latter, Jeremie Puget, Stephen Schneider, and Yervant Terzian<br>Affiliation(s): California Institute of Technology, Pasadena, CA 91125, USA; UMR7550, Centre de donnees Astronomiques de Strasbourg (CDS), 67000 Strasbourg, France; NASA Herschel Science Center, California Institute of Technology, Pasadena, CA 91125, USA; Department of Astronomy, University of Massachusetts, Amherst, MA 01003, USA; Department of Astronomy/NAIC, Cornell University, Ithaca, NY 14853, USA Sun, 28 Jun 2009 23:00:00 GMT Automated Variable Star Classification Using the Northern Sky Variability Survey http://stacks.iop.org/1538-3881/138/i=2/a=466?rss=2.0 Author(s): D. I. Hoffman, T. E. Harrison, and B. J. McNamara<br>Affiliation(s): Department of Astronomy, New Mexico State University, Box 30001/MSC45000, Las Cruces, NM 88003, USA Sun, 28 Jun 2009 23:00:00 GMT The Period Variation of and a Spot Model for the Eclipsing Binary AR Bootis http://stacks.iop.org/1538-3881/138/i=2/a=478?rss=2.0 Author(s): Jae Woo Lee, Jae-Hyuck Youn, Chung-Uk Lee, Seung-Lee Kim, and Robert H. Koch<br>Affiliation(s): Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea; Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA Sun, 28 Jun 2009 23:00:00 GMT High Angular Resolution Imaging Spectroscopy of the Galactic Ultracompact H II Region K3-50A http://stacks.iop.org/1538-3881/138/i=2/a=489?rss=2.0 Author(s): Robert D. Blum and Peter J. McGregor<br>Affiliation(s): NOAO Gemini Science Center, 950 North Cherry Avenue, Tucson, AZ 85719, USA; Research School of Astronomy and Astrophysics, The Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia Sun, 28 Jun 2009 23:00:00 GMT The Araucaria Project. Infrared Tip of the Red Giant Branch Distances to the Carina and Fornax Dwarf Spheroidal Galaxies http://stacks.iop.org/1538-3881/138/i=2/a=459?rss=2.0 Author(s): Grzegorz Pietrzynski, Marek Gorski, Wolfgang Gieren, Valentin D. Ivanov, Fabio Bresolin, and Rolf-Peter Kudritzki<br>Affiliation(s): Universidad de Concepcion, Departamento de Astronomia, Casilla 160-C, Concepcion, Chile; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478, Warsaw, Poland; European Southern Observatory, Ave. Alonso de Cordova 3107, Casilla 19001, Santiago 19, Chile; Institute for Astronomy, University of Hawaii at Manoa, 2680 Woodlawn Drive, Honolulu HI 96822, USA Sun, 28 Jun 2009 23:00:00 GMT