A systematic fitting scheme for caustic-crossing microlensing events
Identifieur interne : 001944 ( Istex/Curation ); précédent : 001943; suivant : 001945A systematic fitting scheme for caustic-crossing microlensing events
Auteurs : N. Kains [Royaume-Uni] ; A. Cassan [Allemagne] ; K. Horne ; M. D. Albrow [Nouvelle-Zélande] ; S. Dieters [France] ; P. Fouqué [France] ; J. Greenhill [Australie] ; A. Udalski [Pologne] ; M. Zub [Allemagne] ; D. P. Bennett [États-Unis] ; M. Dominik ; J. Donatowicz [Autriche] ; D. Kubas [Chili] ; Y. Tsapras ; T. Anguita [Allemagne] ; V. Batista [France] ; J.-P. Beaulieu [France] ; S. Brillant [Chili] ; M. Bode ; D. M. Bramich [Espagne] ; M. Burgdorf ; J. A. R. Caldwell [États-Unis] ; K. H. Cook [États-Unis] ; Ch. Coutures [France] ; D. Dominis Prester [Croatie] ; U. G. J Rgensen [Danemark] ; S. Kane [États-Unis] ; J. B. Marquette [France] ; R. Martin [Australie] ; J. Menzies [Afrique du Sud] ; K. R. Pollard [Nouvelle-Zélande] ; N. Rattenbury [Royaume-Uni] ; K. C. Sahu [États-Unis] ; C. Snodgrass [Chili] ; I. Steele [Autriche] ; C. Vinter [Danemark] ; J. Wambsganss [Allemagne] ; A. Williams [Australie] ; M. Kubiak [Pologne] ; G. Pietrzy Ski [Pologne, Chili] ; I. Soszy Ski [Pologne] ; O. Szewczyk [Pologne, Chili] ; M. K. Szyma Ski [Pologne] ; K. Ulaczyk [Pologne] ; Ł. Wyrzykowski [Royaume-Uni]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2009-05-11.
Abstract
We outline a method for fitting binary-lens caustic-crossing microlensing events based on the alternative model parametrization proposed and detailed by Cassan. As an illustration of our methodology, we present an analysis of OGLE-2007-BLG-472, a double-peaked Galactic microlensing event with a source crossing the whole caustic structure in less than three days. In order to identify all possible models we conduct an extensive search of the parameter space, followed by a refinement of the parameters with a Markov Chain Monte Carlo algorithm. We find a number of low-χ2 regions in the parameter space, which lead to several distinct competitive best models. We examine the parameters for each of them, and estimate their physical properties. We find that our fitting strategy locates several minima that are difficult to find with other modelling strategies and is therefore a more appropriate method to fit this type of event.
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DOI: 10.1111/j.1365-2966.2009.14615.x
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N. Kains<affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: nk87@st-and.ac.uk</mods:affiliation><country wicri:rule="url">Royaume-Uni</country></affiliation><affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews KY16 9SS</mods:affiliation><wicri:noCountry code="subField">9SS</wicri:noCountry></affiliation><affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews KY16 9SS</mods:affiliation><wicri:noCountry code="subField">9SS</wicri:noCountry></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation>Le document en format XML
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Caldwell</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis, TX 79734, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis, TX 79734</wicri:regionArea></affiliation></author><author><name sortKey="Cook, K H" sort="Cook, K H" uniqKey="Cook K" first="K. H." last="Cook">K. H. Cook</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Lawrence Livermore National Laboratory, IGPP, PO Box 808, Livermore, CA 94551, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Lawrence Livermore National Laboratory, IGPP, PO Box 808, Livermore, CA 94551</wicri:regionArea></affiliation></author><author><name sortKey="Coutures, Ch" sort="Coutures, Ch" uniqKey="Coutures C" first="Ch." last="Coutures">Ch. Coutures</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>DSM/DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette cedex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>DSM/DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette cedex</wicri:regionArea></affiliation></author><author><name sortKey="Dominis Prester, D" sort="Dominis Prester, D" uniqKey="Dominis Prester D" first="D." last="Dominis Prester">D. Dominis Prester</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Physics Department, Faculty of Arts and Sciences, University of Rijeka, 51000 Rijeka, Croatia</mods:affiliation><country xml:lang="fr">Croatie</country><wicri:regionArea>Physics Department, Faculty of Arts and Sciences, University of Rijeka, 51000 Rijeka</wicri:regionArea></affiliation></author><author><name sortKey="J Rgensen, U G" sort="J Rgensen, U G" uniqKey="J Rgensen U" first="U. G." last="J Rgensen">U. G. J Rgensen</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen</wicri:regionArea></affiliation></author><author><name sortKey="Kane, S" sort="Kane, S" uniqKey="Kane S" first="S." last="Kane">S. Kane</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125</wicri:regionArea></affiliation></author><author><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris</wicri:regionArea></affiliation></author><author><name sortKey="Martin, R" sort="Martin, R" uniqKey="Martin R" first="R." last="Martin">R. Martin</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Perth Observatory, Walnut Road, Bickley, Perth 6076</wicri:regionArea></affiliation></author><author><name sortKey="Menzies, J" sort="Menzies, J" uniqKey="Menzies J" first="J." last="Menzies">J. Menzies</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa</mods:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>South African Astronomical Observatory, PO Box 9, Observatory 7935</wicri:regionArea></affiliation></author><author><name sortKey="Pollard, K R" sort="Pollard, K R" uniqKey="Pollard K" first="K. R." last="Pollard">K. R. Pollard</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation><country xml:lang="fr">Nouvelle-Zélande</country><wicri:regionArea>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch</wicri:regionArea></affiliation></author><author><name sortKey="Rattenbury, N" sort="Rattenbury, N" uniqKey="Rattenbury N" first="N." last="Rattenbury">N. Rattenbury</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="4"><mods:affiliation>Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL</mods:affiliation><orgName type="university">Université de Manchester</orgName><country>Royaume-Uni</country><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Sahu, K C" sort="Sahu, K C" uniqKey="Sahu K" first="K. C." last="Sahu">K. C. Sahu</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218</wicri:regionArea></affiliation></author><author><name sortKey="Snodgrass, C" sort="Snodgrass, C" uniqKey="Snodgrass C" first="C." last="Snodgrass">C. 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Steele</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040, Austria</mods:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040</wicri:regionArea></affiliation></author><author><name sortKey="Vinter, C" sort="Vinter, C" uniqKey="Vinter C" first="C." last="Vinter">C. Vinter</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen</wicri:regionArea></affiliation></author><author><name sortKey="Wambsganss, J" sort="Wambsganss, J" uniqKey="Wambsganss J" first="J." last="Wambsganss">J. Wambsganss</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg</wicri:regionArea></affiliation></author><author><name sortKey="Williams, A" sort="Williams, A" uniqKey="Williams A" first="A." last="Williams">A. Williams</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation><wicri:noCountry code="no comma">PLANET/RoboNet Collaborations</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Perth Observatory, Walnut Road, Bickley, Perth 6076</wicri:regionArea></affiliation></author><author><name sortKey="Kubiak, M" sort="Kubiak, M" uniqKey="Kubiak M" first="M." last="Kubiak">M. Kubiak</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Pietrzy Ski, G" sort="Pietrzy Ski, G" uniqKey="Pietrzy Ski G" first="G." last="Pietrzy Ski">G. Pietrzy Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción</wicri:regionArea></affiliation></author><author><name sortKey="Soszy Ski, I" sort="Soszy Ski, I" uniqKey="Soszy Ski I" first="I." last="Soszy Ski">I. Soszy Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Szewczyk, O" sort="Szewczyk, O" uniqKey="Szewczyk O" first="O." last="Szewczyk">O. Szewczyk</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción</wicri:regionArea></affiliation></author><author><name sortKey="Szyma Ski, M K" sort="Szyma Ski, M K" uniqKey="Szyma Ski M" first="M. K." last="Szyma Ski">M. K. Szyma Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Ulaczyk, K" sort="Ulaczyk, K" uniqKey="Ulaczyk K" first="K." last="Ulaczyk">K. Ulaczyk</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation><wicri:noCountry code="no comma">Optical Gravitational Lens Experiment (OGLE) Collaboration</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Wyrzykowski, L" sort="Wyrzykowski, L" uniqKey="Wyrzykowski L" first="Ł." last="Wyrzykowski">Ł. Wyrzykowski</name><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation><affiliation wicri:level="4"><mods:affiliation>Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA</mods:affiliation><orgName type="university">Université de Cambridge</orgName><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:86B41CF0AB8D5F8179DD4A514EE6081E2B7A7D08</idno><date when="2009" year="2009">2009</date><idno type="doi">10.1111/j.1365-2966.2009.14615.x</idno><idno type="url">https://api.istex.fr/document/86B41CF0AB8D5F8179DD4A514EE6081E2B7A7D08/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001944</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001944</idno><idno type="wicri:Area/Istex/Curation">001944</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">A systematic fitting scheme for caustic-crossing microlensing events</title><author><name sortKey="Kains, N" sort="Kains, N" uniqKey="Kains N" first="N." last="Kains">N. Kains</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews KY16 9SS</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: nk87@st-and.ac.uk</mods:affiliation><country wicri:rule="url">Royaume-Uni</country></affiliation><affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: nk87@st-and.ac.uk</mods:affiliation><country wicri:rule="url">Royaume-Uni</country></affiliation></author><author><name sortKey="Cassan, A" sort="Cassan, A" uniqKey="Cassan A" first="A." last="Cassan">A. Cassan</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg</wicri:regionArea></affiliation></author><author><name sortKey="Horne, K" sort="Horne, K" uniqKey="Horne K" first="K." last="Horne">K. Horne</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews KY16 9SS</mods:affiliation><wicri:noCountry code="subField">9SS</wicri:noCountry></affiliation></author><author><name sortKey="Albrow, M D" sort="Albrow, M D" uniqKey="Albrow M" first="M. D." last="Albrow">M. D. Albrow</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation><country xml:lang="fr">Nouvelle-Zélande</country><wicri:regionArea>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch</wicri:regionArea></affiliation></author><author><name sortKey="Dieters, S" sort="Dieters, S" uniqKey="Dieters S" first="S." last="Dieters">S. Dieters</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris</wicri:regionArea></affiliation></author><author><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouqué">P. Fouqué</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>LATT, Université de Toulouse, CNRS, 14 avenue Edouard Belin, F-31400 Toulouse, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>LATT, Université de Toulouse, CNRS, 14 avenue Edouard Belin, F-31400 Toulouse</wicri:regionArea></affiliation></author><author><name sortKey="Greenhill, J" sort="Greenhill, J" uniqKey="Greenhill J" first="J." last="Greenhill">J. Greenhill</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>School of Mathematics and Physics, University of Tasmania, Private Bag 37, Hobart, Tasmania 7001, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>School of Mathematics and Physics, University of Tasmania, Private Bag 37, Hobart, Tasmania 7001</wicri:regionArea></affiliation></author><author><name sortKey="Udalski, A" sort="Udalski, A" uniqKey="Udalski A" first="A." last="Udalski">A. Udalski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Zub, M" sort="Zub, M" uniqKey="Zub M" first="M." last="Zub">M. Zub</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg</wicri:regionArea></affiliation></author><author><name sortKey="Bennett, D P" sort="Bennett, D P" uniqKey="Bennett D" first="D. P." last="Bennett">D. P. Bennett</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556</wicri:regionArea></affiliation></author><author><name sortKey="Dominik, M" sort="Dominik, M" uniqKey="Dominik M" first="M." last="Dominik">M. Dominik</name><affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews KY16 9SS</mods:affiliation><wicri:noCountry code="subField">9SS</wicri:noCountry></affiliation></author><author><name sortKey="Donatowicz, J" sort="Donatowicz, J" uniqKey="Donatowicz J" first="J." last="Donatowicz">J. Donatowicz</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040, Austria</mods:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040</wicri:regionArea></affiliation></author><author><name sortKey="Kubas, D" sort="Kubas, D" uniqKey="Kubas D" first="D." last="Kubas">D. Kubas</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago</wicri:regionArea></affiliation></author><author><name sortKey="Tsapras, Y" sort="Tsapras, Y" uniqKey="Tsapras Y" first="Y." last="Tsapras">Y. Tsapras</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation></author><author><name sortKey="Anguita, T" sort="Anguita, T" uniqKey="Anguita T" first="T." last="Anguita">T. Anguita</name><affiliation wicri:level="1"><mods:affiliation>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg</wicri:regionArea></affiliation></author><author><name sortKey="Batista, V" sort="Batista, V" uniqKey="Batista V" first="V." last="Batista">V. Batista</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris</wicri:regionArea></affiliation></author><author><name sortKey="Beaulieu, J P" sort="Beaulieu, J P" uniqKey="Beaulieu J" first="J.-P." last="Beaulieu">J.-P. Beaulieu</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris</wicri:regionArea></affiliation></author><author><name sortKey="Brillant, S" sort="Brillant, S" uniqKey="Brillant S" first="S." last="Brillant">S. Brillant</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago</wicri:regionArea></affiliation></author><author><name sortKey="Bode, M" sort="Bode, M" uniqKey="Bode M" first="M." last="Bode">M. Bode</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation></author><author><name sortKey="Bramich, D M" sort="Bramich, D M" uniqKey="Bramich D" first="D. M." last="Bramich">D. M. Bramich</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de La Palma, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de La Palma</wicri:regionArea></affiliation></author><author><name sortKey="Burgdorf, M" sort="Burgdorf, M" uniqKey="Burgdorf M" first="M." last="Burgdorf">M. Burgdorf</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation><wicri:noCountry code="subField">1LD</wicri:noCountry></affiliation></author><author><name sortKey="Caldwell, J A R" sort="Caldwell, J A R" uniqKey="Caldwell J" first="J. A. R." last="Caldwell">J. A. R. Caldwell</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis, TX 79734, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis, TX 79734</wicri:regionArea></affiliation></author><author><name sortKey="Cook, K H" sort="Cook, K H" uniqKey="Cook K" first="K. H." last="Cook">K. H. Cook</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Lawrence Livermore National Laboratory, IGPP, PO Box 808, Livermore, CA 94551, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Lawrence Livermore National Laboratory, IGPP, PO Box 808, Livermore, CA 94551</wicri:regionArea></affiliation></author><author><name sortKey="Coutures, Ch" sort="Coutures, Ch" uniqKey="Coutures C" first="Ch." last="Coutures">Ch. Coutures</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>DSM/DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette cedex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>DSM/DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette cedex</wicri:regionArea></affiliation></author><author><name sortKey="Dominis Prester, D" sort="Dominis Prester, D" uniqKey="Dominis Prester D" first="D." last="Dominis Prester">D. Dominis Prester</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Physics Department, Faculty of Arts and Sciences, University of Rijeka, 51000 Rijeka, Croatia</mods:affiliation><country xml:lang="fr">Croatie</country><wicri:regionArea>Physics Department, Faculty of Arts and Sciences, University of Rijeka, 51000 Rijeka</wicri:regionArea></affiliation></author><author><name sortKey="J Rgensen, U G" sort="J Rgensen, U G" uniqKey="J Rgensen U" first="U. G." last="J Rgensen">U. G. J Rgensen</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen</wicri:regionArea></affiliation></author><author><name sortKey="Kane, S" sort="Kane, S" uniqKey="Kane S" first="S." last="Kane">S. Kane</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125</wicri:regionArea></affiliation></author><author><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Boulevard Arago, 75014 Paris</wicri:regionArea></affiliation></author><author><name sortKey="Martin, R" sort="Martin, R" uniqKey="Martin R" first="R." last="Martin">R. Martin</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Perth Observatory, Walnut Road, Bickley, Perth 6076</wicri:regionArea></affiliation></author><author><name sortKey="Menzies, J" sort="Menzies, J" uniqKey="Menzies J" first="J." last="Menzies">J. Menzies</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa</mods:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>South African Astronomical Observatory, PO Box 9, Observatory 7935</wicri:regionArea></affiliation></author><author><name sortKey="Pollard, K R" sort="Pollard, K R" uniqKey="Pollard K" first="K. R." last="Pollard">K. R. Pollard</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation><country xml:lang="fr">Nouvelle-Zélande</country><wicri:regionArea>Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch</wicri:regionArea></affiliation></author><author><name sortKey="Rattenbury, N" sort="Rattenbury, N" uniqKey="Rattenbury N" first="N." last="Rattenbury">N. Rattenbury</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="4"><mods:affiliation>Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL</mods:affiliation><orgName type="university">Université de Manchester</orgName><country>Royaume-Uni</country><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Sahu, K C" sort="Sahu, K C" uniqKey="Sahu K" first="K. C." last="Sahu">K. C. Sahu</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218</wicri:regionArea></affiliation></author><author><name sortKey="Snodgrass, C" sort="Snodgrass, C" uniqKey="Snodgrass C" first="C." last="Snodgrass">C. Snodgrass</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago</wicri:regionArea></affiliation></author><author><name sortKey="Steele, I" sort="Steele, I" uniqKey="Steele I" first="I." last="Steele">I. Steele</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040, Austria</mods:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Computing, Technical University of Vienna, Wiedner Hauptstr. 10, Vienna A-1040</wicri:regionArea></affiliation></author><author><name sortKey="Vinter, C" sort="Vinter, C" uniqKey="Vinter C" first="C." last="Vinter">C. Vinter</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Niels Bohr Institute, Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen</wicri:regionArea></affiliation></author><author><name sortKey="Wambsganss, J" sort="Wambsganss, J" uniqKey="Wambsganss J" first="J." last="Wambsganss">J. Wambsganss</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie (ZAH), Heidelberg University, Mönchhofstraße 12-14, 69120 Heidelberg</wicri:regionArea></affiliation></author><author><name sortKey="Williams, A" sort="Williams, A" uniqKey="Williams A" first="A." last="Williams">A. Williams</name><affiliation><mods:affiliation>PLANET/RoboNet Collaborations</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Perth Observatory, Walnut Road, Bickley, Perth 6076</wicri:regionArea></affiliation></author><author><name sortKey="Kubiak, M" sort="Kubiak, M" uniqKey="Kubiak M" first="M." last="Kubiak">M. Kubiak</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Pietrzy Ski, G" sort="Pietrzy Ski, G" uniqKey="Pietrzy Ski G" first="G." last="Pietrzy Ski">G. Pietrzy Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción</wicri:regionArea></affiliation></author><author><name sortKey="Soszy Ski, I" sort="Soszy Ski, I" uniqKey="Soszy Ski I" first="I." last="Soszy Ski">I. Soszy Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Szewczyk, O" sort="Szewczyk, O" uniqKey="Szewczyk O" first="O." last="Szewczyk">O. Szewczyk</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción</wicri:regionArea></affiliation></author><author><name sortKey="Szyma Ski, M K" sort="Szyma Ski, M K" uniqKey="Szyma Ski M" first="M. K." last="Szyma Ski">M. K. Szyma Ski</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Ulaczyk, K" sort="Ulaczyk, K" uniqKey="Ulaczyk K" first="K." last="Ulaczyk">K. Ulaczyk</name><affiliation><mods:affiliation>Optical Gravitational Lens Experiment (OGLE) Collaboration</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland</mods:affiliation><country xml:lang="fr">Pologne</country><wicri:regionArea>Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa</wicri:regionArea></affiliation></author><author><name sortKey="Wyrzykowski, L" sort="Wyrzykowski, L" uniqKey="Wyrzykowski L" first="Ł." last="Wyrzykowski">Ł. Wyrzykowski</name><affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD</mods:affiliation></affiliation><affiliation wicri:level="4"><mods:affiliation>Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA</mods:affiliation><orgName type="university">Université de Cambridge</orgName><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="abbrev">Monthly Notices of the Royal Astronomical Society</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-05-11">2009-05-11</date><biblScope unit="volume">395</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="787">787</biblScope><biblScope unit="page" to="796">796</biblScope></imprint><idno type="ISSN">0035-8711</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">We outline a method for fitting binary-lens caustic-crossing microlensing events based on the alternative model parametrization proposed and detailed by Cassan. As an illustration of our methodology, we present an analysis of OGLE-2007-BLG-472, a double-peaked Galactic microlensing event with a source crossing the whole caustic structure in less than three days. In order to identify all possible models we conduct an extensive search of the parameter space, followed by a refinement of the parameters with a Markov Chain Monte Carlo algorithm. We find a number of low-χ2 regions in the parameter space, which lead to several distinct competitive best models. We examine the parameters for each of them, and estimate their physical properties. We find that our fitting strategy locates several minima that are difficult to find with other modelling strategies and is therefore a more appropriate method to fit this type of event.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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