[en] We report the result of the analysis of a dramatic repeating gravitational microlensing event OGLE-2009-BLG-092/MOA-2009-BLG-137, for which the light curve is characterized by two distinct peaks with perturbations near both peaks. We find that the event is produced by the passage of the source trajectory over the central perturbation regions associated with the individual components of a wide-separation binary. The event is special in the sense that the second perturbation, occurring ~100 days after the first, was predicted by the real-time analysis conducted after the first peak, demonstrating that real-time modeling can be routinely done for binary and planetary events. With the data obtained from follow-up observations covering the second peak, we are able to uniquely determine the physical parameters of the lens system. We find that the event occurred on a bulge clump giant and it was produced by a binary lens composed of a K- and M-type main-sequence stars. The estimated masses of the binary components are M [SUB]1[/SUB] = 0.69 ± 0.11 M [SUB]sun[/SUB] and M [SUB]2[/SUB] = 0.36 ± 0.06 M [SUB]sun[/SUB], respectively, and they are separated in projection by r [SUB]bottom[/SUB] = 10.9 ± 1.3 AU. The measured distance to the lens is D [SUB]L[/SUB] = 5.6 ± 0.7 kpc. We also detect the orbital motion of the lens system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Ryu, Y*-H; Department of Physics, Institute for Astrophysics, Chungbuk National University, Cheongju 371-763, Republic of Korea
Han, C.; Department of Physics, Institute for Astrophysics, Chungbuk National University, Cheongju 371-763, Republic of Korea ; The μFUN Collaboration. ; Author to whom any correspondence should be addressed.
Hwang, K*-H; Department of Physics, Institute for Astrophysics, Chungbuk National University, Cheongju 371-763, Republic of Korea
Street, R.; Las Cumbres Observatory Global Telescope Network, 6740B Cortona Dr, Suite 102, Goleta, CA 93117, USA ; The RoboNet Collaboration.
Udalski, A.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ; The OGLE Collaboration.
Sumi, T.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan ; The MOA Collaboration.
Fukui, A.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan ; The MOA Collaboration.
Beaulieu, J*-P; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France ; The PLANET Collaboration.
Gould, A.; Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA ; The μFUN Collaboration.
Dominik, M.; School of Physics & Astronomy, SUPA, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK ; The RoboNet Collaboration. ; MiNDSTEp Collaboration.
Abe, F.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Bennett, D. P.; Department of Physics, University of Notre Damey, Notre Dame, IN 46556, USA
Bond, I. A.; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand
Botzler, C. S.; Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand
Furusawa, K.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Hayashi, F.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Hearnshaw, J. B.; University of Canterbury, Department of Physics and Astronomy, Private Bag 4800, Christchurch 8020, New Zealand
Hosaka, S.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Itow, Y.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Kamiya, K.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Kilmartin, P. M.; Mt. John Observatory, P.O. Box 56, Lake Tekapo 8770, New Zealand
Korpela, A.; School of Chemical and Physical Sciences, Victoria University, Wellington, New Zealand
Lin, W.; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand
Ling, C. H.; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand
Makita, S.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Masuda, K.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Matsubara, Y.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Miyake, N.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Muraki, Y.; Department of Physics, Konan University, Nishiokamoto 8-9-1, Kobe 658-8501, Japan
Nishimoto, K.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Ohnishi, K.; Nagano National College of Technology, Nagano 381-8550, Japan
Perrott, Y. C.; Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand
Rattenbury, N.; Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand
Saito, To; Tokyo Metropolitan College of Industrial Technology, Tokyo 116-8523, Japan
Skuljan, L.; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand
Sullivan, D. J.; School of Chemical and Physical Sciences, Victoria University, Wellington, New Zealand
Suzuki, D.; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, Japan
Sweatman, W. L.; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand
Tristram, P. J.; Mt. John Observatory, P.O. Box 56, Lake Tekapo 8770, New Zealand
Wada, K.; Department of Physics, Konan University, Nishiokamoto 8-9-1, Kobe 658-8501, Japan
Yock, P. C. M.; Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand
The MOA, Collaboration; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
Szymański, M. K.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
Kubiak, M.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ; Universidad de Concepción, Departamento de Fisica, Casilla 160-C, Concepción, Chile
Ulaczyk, K.; Molehill Astronomical Observatory, North Shore, New Zealand
The OGLE, Collaboration; Auckland Observatory, Auckland, New Zealand
Bos, M.; Department of Physics, Texas A&M University, College Station, TX, USA
Christie, G. W.; School of Mathematical Sciences, Queen Mary, University of London, London E1 4NS, UK
Depoy, D. L.; Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA
Gal-Yam, A.; School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
Gaudi, B. S.; Korea Astronomy and Space Science Institute, Daejeon 305-348, Republic of Korea
Kaspi, S.; School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
Lee, C*-U; Farm Cove Observatory, Pakuranga, Auckland, New Zealand
Maoz, D.; Bronberg Observatory, Pretoria, South Africa
McCormick, J.; Kumeu Observatory, Kumeu, New Zealand
Monard, B.; Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA
Moorhouse, D.; School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
Pogge, R. W.; School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
Polishook, D.; School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
Shvartzvald, Y.; Kumeu Observatory, Kumeu, New Zealand
Shporer, A.; Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA
Thornley, G.; University of Canterbury, Department of Physics and Astronomy, Private Bag 4800, Christchurch 8020, New Zealand
Yee, J. C.; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France ; Institut dÁstrophysique de Paris, UPMC Univ Paris 06, UMR7095, F-75014 Paris, France
The μFUN, Collaboration; European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile
Albrow, M. D.; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France
Batista, V.; School of Math and Physics, University of Tasmania, Private Bag 37, GPO Hobart, Tasmania 7001, Australia
Brillant, S.; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France
Cassan, A.; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France
Cole, A.; Institut d'Astrophysique de Paris, UMR7095 CNRS-Université Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France ; LATT, Université de Toulouse, CNRS, 14 Avenue Edouard Belin, 31400 Toulouse, France
Corrales, E.; LATT, Université de Toulouse, CNRS, 14 Avenue Edouard Belin, 31400 Toulouse, France
Coutures, Ch; School of Math and Physics, University of Tasmania, Private Bag 37, GPO Hobart, Tasmania 7001, Australia
Dieters, S.; South African Astronomical Observatory, P.O. Box 9 Observatory 7935, South Africa
Fouqué, P.; School of Physics, University of Exeter, Stocker Road, Exeter, Devon, EX4 4QL, UK
Greenhill, J.; European Southern Observatory, Karl-Schwarzschild-Straße 2, 85748 Garching bei München, Germany
Menzies, J.; School of Physics & Astronomy, SUPA, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK ; MiNDSTEp Collaboration.
The PLANET, Collaboration; School of Physics & Astronomy, SUPA, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK ; The PLANET Collaboration.
Allan, A.; European Southern Observatory, Karl-Schwarzschild-Straße 2, 85748 Garching bei München, Germany ; The PLANET Collaboration.
Bramich, D. M.; European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile ; Max Planck Institute for Solar System Research, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany ; MiNDSTEp Collaboration.
Browne, P.; Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead CH41 1LD, UK
Horne, K.; Las Cumbres Observatory Global Telescope Network, 6740B Cortona Dr, Suite 102, Goleta, CA 93117, USA ; School of Mathematical Sciences, Queen Mary, University of London, London E1 4NS, UK ; The PLANET Collaboration.
Kains, N.; Università degli Studi di Salerno, Dipartimento di Fisica "E. R. Caianiello," Via Ponte Don Melillo, 84085 Fisciano (SA), Italy ; INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, 84019 Vietri sul Mare (SA), Italy
Snodgrass, C.; Deutsches SOFIA Institut, Universität Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany ; SOFIA Science Center, NASA Ames Research Center, Mail Stop N211-3, Moffett Field CA 94035, USA
Steele, I.; Università degli Studi di Salerno, Dipartimento di Fisica "E. R. Caianiello," Via Ponte Don Melillo, 84085 Fisciano (SA), Italy ; INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, 84019 Vietri sul Mare (SA), Italy
The RoboNet, Collaboration; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Bozza, V.; Department of Physics & Astronomy, Aarhus University, Ny Munkegade 120, 8000 Århus C, Denmark
Burgdorf, M. J.; Department of Physics & Astronomy, Aarhus University, Ny Munkegade 120, 8000 Århus C, Denmark
Calchi Novati, S.; Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, 2100 København Ø, Denmark
Finet, François ; Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, 2100 København Ø, Denmark ; Armagh Observatory, College Hill, Armagh, BT61 9DG, UK
Glitrup, M.; Institut für Astrophysik, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Grundahl, F.; Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, 2100 København Ø, Denmark ; Centre for Star and Planet Formation, Københavns Universitet, Øster Voldgade 5-7, 1350 København Ø, Denmark
Harpsøe, K.; School of Physics & Astronomy, SUPA, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK ; Astronomisches Rechen-Institut, Zentrum für Astronomie der Universitat Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany
Hessman, F. V.; Astronomisches Rechen-Institut, Zentrum für Astronomie der Universitat Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany
Hinse, T. C.; Università degli Studi di Salerno, Dipartimento di Fisica "E. R. Caianiello," Via Ponte Don Melillo, 84085 Fisciano (SA), Italy ; INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, 84019 Vietri sul Mare (SA), Italy ; Dipartimento di Ingegneria, Università del Sannio, Corso Garibaldi 107, 82100 Benevento, Italy
Hundertmark, M.; Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, 2100 København Ø, Denmark
Jørgensen, U. G.; Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran, Iran ; School of Astronomy, IPM (Institute for Studies in Theoretical Physics and Mathematics), P.O. Box 19395-5531, Tehran, Iran
Liebig, C.; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Maier, G.; Università degli Studi di Salerno, Dipartimento di Fisica "E. R. Caianiello," Via Ponte Don Melillo, 84085 Fisciano (SA), Italy ; INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, 84019 Vietri sul Mare (SA), Italy
Mancini, L.; Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, 2100 København Ø, Denmark
Mathiasen, M.; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Rahvar, S.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Ricci, Davide ; Armagh Observatory, College Hill, Armagh, BT61 9DG, UK
Scarpetta, G.; Armagh Observatory, College Hill, Armagh, BT61 9DG, UK
