• Author: Bozza, V.

    Università degli Studi di Salerno

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    University of St Andrews

  • Author: Rattenbury, N. J.

    University of Auckland

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    University of Copenhagen

  • Author: Tsapras, Y.

    Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, suite 102, Goleta, CA 93117, USA

  • Author: Bramich, D. M.

    ESO Headquarters, Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany

  • Author: Udalski, A.

    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

  • Author: Bond, I. A.

    Massey University

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    University of St Andrews

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    Heidelberg University

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    IRAP, CNRS, Université de Toulouse, 14 avenue Edouard Belin, 31400 Toulouse, France

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    Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Asakuchi, Okayama 719‐0232, Japan

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    University of St Andrews

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    Chungbuk National University

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    Chungbuk National University

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    Chungbuk National University

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    Chungbuk National University

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    Ohio State University

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    University of Exeter

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    University of Manchester

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, suite 102, Goleta, CA 93117, USA

  • Author: Buckley, D.

    South African Large Telescope, PO Box 9, Observatory 7935, South Africa

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    Nagoya University

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    University of Copenhagen

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    University of Copenhagen

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    Università degli Studi di Salerno

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    University of Copenhagen

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    Università degli Studi di Salerno

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    Università degli Studi di Salerno

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    Heidelberg University

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    Universität Stuttgart

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    University of St Andrews

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    IT-Department, Astrophysics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Kains, N.

    University of St Andrews

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    University of Manchester

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    University of Copenhagen

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    Bellatrix Astronomical Observatory, Via Madonna de Loco 47, 03023 Ceccano (FR), Italy

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    Sharif University of Technology

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    Institut d’Astrophysique et de Géophysique, Allée du 6 Août 17, Sart Tilman, Bât. B5c, 4000 Liège, Belgium

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    Max Planck Institute

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    Keele University

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    Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD

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    Institut d’Astrophysique et de Géophysique, Allée du 6 Août 17, Sart Tilman, Bât. B5c, 4000 Liège, Belgium

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    Instituto de Astrofísica de Andalucía

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    Heidelberg University

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    Heidelberg University

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    University of Canterbury

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    UPMC‐CNRS, UMR7095, Institut d’Astrophysique de Paris, F‐75014 Paris, France

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    UPMC‐CNRS, UMR7095, Institut d’Astrophysique de Paris, F‐75014 Paris, France

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    Department of Physics, 225 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA

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    McDonald Observatory, 16120 State Highway Spur 78 #2, Fort Davis, TX 79734, USA

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    University of Tasmania

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    Lawrence Livermore National Laboratory

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    UPMC‐CNRS, UMR7095, Institut d’Astrophysique de Paris, F‐75014 Paris, France

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    University of Tasmania

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    University of Rijeka

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    Technische Universität Wien

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    University of Tasmania

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    California Institute of Technology

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    UPMC‐CNRS, UMR7095, Institut d’Astrophysique de Paris, F‐75014 Paris, France

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    UPMC‐CNRS, UMR7095, Institut d’Astrophysique de Paris, F‐75014 Paris, France

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    Perth Observatory, Walnut Road, Bickley, Perth 6076, WA, Australia

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    South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa

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    University of Canterbury

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    Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA

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    Perth Observatory, Walnut Road, Bickley, Perth 6076, WA, Australia

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Warsaw University Observatory, Al. Ujazdowskie 4, 00‐478 Warszawa, Poland

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    Texas A&M University

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    Ohio State University

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    Chungbuk National University

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    Ohio State University

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    Korea Astronomy and Space Science Institute, 776 Daedukdae‐ro, Yuseong‐gu, Daejeon 305‐348, South Korea

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    Ohio State University

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    Nagoya University

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    Nagoya University

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    University of Canterbury

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    Nagoya University

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    Mt John Observatory, PO Box 56, Lake Tekapo 8770, New Zealand

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    Victoria University of Wellington

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    Massey University

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    Massey University

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    Nagoya University

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    Nagoya University

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    Nagoya University

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    Department of Physics, Konan University, Nishiokamoto 8‐9‐1, Kobe 658‐8501, Japan

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    Nagano National College of Technology, Nagano 381‐8550, Japan

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    University of Auckland

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    Tokyo Metropolitan College of Aeronautics, Tokyo 116‐8523, Japan

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    Massey University

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    Victoria University of Wellington

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    Nagoya University

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    Osaka University

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    Massey University

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    Mt John Observatory, PO Box 56, Lake Tekapo 8770, New Zealand

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    Osaka University

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    University of Auckland

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    South African Large Telescope, PO Box 9, Observatory 7935, South Africa

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    Department of Earth Sciences, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Wenshan District, Taipei 11677, Taiwan

  • Author: Kniazev, A.

    South African Large Telescope, PO Box 9, Observatory 7935, South Africa

  • Author: Vaisanen, P.

    South African Large Telescope, PO Box 9, Observatory 7935, South Africa

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The microlensing event OGLE‐2008‐BLG‐510 is characterized by an evident asymmetric shape of the peak, promptly detected by the Automated Robotic Terrestrial Exoplanet Microlensing Search (ARTEMiS) system in real time. The skewness of the light curve appears to be compatible both with binary‐lens and binary‐source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrate that: (1) automated real‐time detection of weak microlensing anomalies with immediate feedback is feasible, efficient and sensitive, (2) rather common weak features intrinsically come with ambiguities that are not easily resolved from photometric light curves, (3) a modelling approach that finds all features of parameter space rather than just the ‘favourite model’ is required and (4) the data quality is most crucial, where systematics can be confused with real features, in particular small higher order effects such as orbital motion signatures. It moreover becomes apparent that events with weak signatures are a silver mine for statistical studies, although not easy to exploit. Clues about the apparent paucity of both brown‐dwarf companions and binary‐source microlensing events might hide here.
Original languageEnglish
JournalRoyal Astronomical Society. Monthly Notices
Publication date2012
Volume424
Issue2
Pages902-918
ISSN0035-8711
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 3
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