Reference : OGLE 2008-BLG-290: an accurate measurement of the limb darkening of a galactic bulge ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/86411
OGLE 2008-BLG-290: an accurate measurement of the limb darkening of a galactic bulge K Giant spatially resolved by microlensing
English
Fouqué, P. [Probing Lensing Anomalies Network, ; LATT, Université de Toulouse, CNRS, 14 avenue Edouard Belin, 31400 Toulouse, France]
Heyrovský, D. [Institute of Theoretical Physics, Charles University, V Holešovičkách 2, 18000 Prague, Czech Republic]
Dong, S. [Microlensing Follow Up Network, ; Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Gould, A. [Microlensing Follow Up Network, ; Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Udalski, A. [The Optical Gravitational Lensing Experiment, ; Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland]
Albrow, M. D. [Probing Lensing Anomalies Network, ; University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Batista, V. [Probing Lensing Anomalies Network, ; Institut d'Astrophysique de Paris, CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Beaulieu, J*-P [Probing Lensing Anomalies Network, ; Institut d'Astrophysique de Paris, CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Bennett, D. P. [Probing Lensing Anomalies Network, ; Microlensing Observations in Astrophysics, ; University of Texas, McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis TX 79734, USA]
Bond, I. A. [Microlensing Observations in Astrophysics, ; Institute of Information and Mathematical Sciences, Massey University, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand]
Bramich, D. M. [Probing Lensing Anomalies Network, ; Robotic Telescope Network, ; European Southern Observatory (ESO), Karl-Schwarzschild-Straße 2, 85748 Garching bei München, Germany]
Calchi Novati, S. [Dipartimento di Fisica, Universita' di Salerno and INFN, sez. di Napoli, Italy]
Cassan, A. [Probing Lensing Anomalies Network, ; Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstrasse 12-14, 69120 Heidelberg, Germany]
Coutures, C. [Probing Lensing Anomalies Network, ; Institut d'Astrophysique de Paris, CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Dieters, S. [Probing Lensing Anomalies Network, ; Institut d'Astrophysique de Paris, CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Dominik, M. [Probing Lensing Anomalies Network, ; Robotic Telescope Network, ; Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; Scottish Universities Physics Alliance, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK ;]
Dominis Prester, D. [Probing Lensing Anomalies Network, ; Physics Department, Faculty of Arts and Sciences, University of Rijeka, Omladinska 14, 51000 Rijeka, Croatia]
Greenhill, J. [Probing Lensing Anomalies Network, ; School of Mathematics and Physics, University of Tasmania, Private Bag 37, Hobart, Tasmania 7001, Australia]
Horne, K. [Probing Lensing Anomalies Network, ; Robotic Telescope Network, ; Scottish Universities Physics Alliance, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK]
Jørgensen, U. G. [Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark]
Kozłowski, S. [Microlensing Follow Up Network, ; Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Kubas, D. [Probing Lensing Anomalies Network, ; European Southern Observatory (ESO), Casilla 19001, Vitacura 19, Santiago, Chile]
Lee, C*-H [University Observatory Munich, Scheinerstrasse 1, 81679 München, Germany ; The Wendelstein Calar Alto Pixellensing Project,]
Marquette, J*-B [Probing Lensing Anomalies Network, ; Institut d'Astrophysique de Paris, CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France]
Mathiasen, M. [Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark]
Menzies, J. [Probing Lensing Anomalies Network, ; South African Astronomical Observatory, PO Box 9 Observatory 7925, South Africa]
Monard, L. A. G. [Microlensing Follow Up Network, ; Bronberg Observatory, Pretoria, South Africa]
Nishiyama, S. [Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan]
Papadakis, I. [Microlensing Follow Up Network, ; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Street, R. [Probing Lensing Anomalies Network, ; Robotic Telescope Network, ; Las Cumbres Observatory, 6740B Cortona Dr, suite 102, Goleta, CA 93117, USA ; Department of Physics, Broida Hall, University of California, Santa Barbara CA 93106-9530, USA]
Sumi, T. [Microlensing Observations in Astrophysics, ; Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Williams, A. [Probing Lensing Anomalies Network, ; Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia]
Yee, J. C. [Microlensing Follow Up Network, ; Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Brillant, S. [European Southern Observatory (ESO), Casilla 19001, Vitacura 19, Santiago, Chile]
Caldwell, J. A. R. [University of Texas, McDonald Observatory, 16120 St Hwy Spur 78, Fort Davis TX 79734, USA]
Cole, A. [School of Mathematics and Physics, University of Tasmania, Private Bag 37, Hobart, Tasmania 7001, Australia]
Cook, K. H. [Institute of Geophysics and Planetary Physics (IGPP), L-413, Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94551, USA]
Donatowicz, J. [Technical University of Vienna, Dept. of Computing, Wiedner Hauptstrasse 10, Vienna, Austria]
Kains, N. [Robotic Telescope Network, ; Scottish Universities Physics Alliance, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK]
Kane, S. R. [NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125, USA]
Martin, Rosa [Centre Hospitalier Universitaire de Liège - CHU > > Service d'Informations médico économiques (SIME) - Service facturation >]
Pollard, K. R. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Sahu, K. C. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA]
Tsapras, Y. [Robotic Telescope Network, ; Las Cumbres Observatory, 6740B Cortona Dr, suite 102, Goleta, CA 93117, USA ; School of Mathematical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK]
Wambsganss, J. [Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstrasse 12-14, 69120 Heidelberg, Germany]
Depoy, D. L. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Gaudi, B. S. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA]
Han, C. [Department of Physics, Institute for Basic Science Research, Chungbuk National University, Chongju 361-763, Korea]
Lee, C*-U [Korea Astronomy and Space Science Institute, 61-1, Whaam-Dong, Youseong-Gu, Daejeon 305-348, Korea]
Park, B*-G [Korea Astronomy and Space Science Institute, 61-1, Whaam-Dong, Youseong-Gu, Daejeon 305-348, Korea]
Kubiak, M. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland]
Szymański, M. K. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland]
Pietrzyński, G. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland ; Universidad de Concepción, Departamento de Física, Astronomy Group, Casilla 160-C, Concepción, Chile]
Soszyński, I. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland]
Szewczyk, O. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland ; Universidad de Concepción, Departamento de Física, Astronomy Group, Casilla 160-C, Concepción, Chile]
Ulaczyk, K. [Warsaw University Observatory. Al. Ujazdowskie 4, 00-478 Warszawa, Poland]
Abe, F. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Fukui, A. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Furusawa, K. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Gilmore, A. C. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Hearnshaw, J. B. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
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. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK]
Korpela, A. V. [Mount John Observatory, PO Box 56, Lake Tekapo 8770, New Zealand]
Lin, W. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Ling, C. H. [Technical University of Vienna, Dept. of Computing, Wiedner Hauptstrasse 10, Vienna, Austria]
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]
Nagaya, M. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Ohnishi, K. [Nagano National College of Technology, Nagano 381-8550, Japan]
Okumura, T. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Perrott, Y. [Department of Physics, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand]
Rattenbury, N. J. [Robotic Telescope Network, ; Department of Physics, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand]
Saito, To [Tokyo Metropolitan College of Industrial Technology, Tokyo 116-0003, Japan]
Sako, T. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan]
Sato, S. [Department of Physics and Astrophysics, Faculty of Science, Nagoya University, Nagoya 464-8602, Japan]
Skuljan, L. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Sullivan, D. [Mount John Observatory, PO Box 56, Lake Tekapo 8770, New Zealand]
Sweatman, W. [University of Canterbury, Department of Physics & Astronomy, Private Bag 4800, Christchurch 8020, New Zealand]
Tristram, P. J. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK]
Allan, A. [School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK]
Bode, M. F. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK]
Burgdorf, M. J. [Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; 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]
Clay, N. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK]
Fraser, S. N. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK]
Hawkins, E. [Las Cumbres Observatory, 6740B Cortona Dr, suite 102, Goleta, CA 93117, USA]
Kerins, E. [Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK]
Lister, T. A. [Las Cumbres Observatory, 6740B Cortona Dr, suite 102, Goleta, CA 93117, USA]
Mottram, C. J. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK]
Saunders, E. S. [Las Cumbres Observatory, 6740B Cortona Dr, suite 102, Goleta, CA 93117, USA ; School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK]
Snodgrass, C. [Microlensing Network for the Detection of Small Terrestrial Exoplanets, ; European Southern Observatory (ESO), Casilla 19001, Vitacura 19, Santiago, Chile]
Steele, I. A. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK]
Anguita, T. [Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstrasse 12-14, 69120 Heidelberg, Germany]
Bozza, V. [Dipartimento di Fisica, Universita' di Salerno and INFN, sez. di Napoli, Italy]
Harpsøe, K. [Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark]
Hinse, T. C. [Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark ; Armagh Observatory, College Hill, Armagh, BT61 9DG, Ireland]
Hundertmark, M. [Institut für Astrophysik, Georg-August Universität, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany]
Kjærgaard, P. [Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark]
Liebig, C. [Astronomisches Rechen-Institut (ARI), Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstrasse 12-14, 69120 Heidelberg, Germany]
Mancini, L. [Dipartimento di Fisica, Universita' di Salerno and INFN, sez. di Napoli, Italy]
Masi, G. [Bellatrix Observatory, via Madonna de Loco 47, 03023 Ceccano, Italy]
Rahvar, S. [Department of Physics, Sharif University of Technology, PO Box 11155-9161, Tehran, Iran]
Ricci, Davide mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Scarpetta, G. [Dipartimento di Fisica, Universita' di Salerno and INFN, sez. di Napoli, Italy]
Southworth, J. [Astrophysics Group, Keele University, Newcastle-under-Lyme, ST5 5BG, UK]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Thöne, C. C. [Dark Cosmology Centre, Københavns Universitet, Juliane Maries Vej 30, 2100 København, Denmark ; INAF, Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy ; Microlensing Network for the Detection of Small Terrestrial Exoplanets,]
Riffeser, A. [University Observatory Munich, Scheinerstrasse 1, 81679 München, Germany]
Seitz, S. [University Observatory Munich, Scheinerstrasse 1, 81679 München, Germany ; Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, 85748 Garching, Germany]
1-Jul-2010
Astronomy and Astrophysics
EDP Sciences
518
A51.1-A51.12
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] gravitational lensing: micro ; techniques: high angular ; resolution ; stars: atmospheres ; stars: individual: ; OGLE 2008-BLG-290
[en] Context. Not only is gravitational microlensing a successful tool for discovering distant exoplanets, but it also enables characterization of the lens and source stars involved in the lensing event. <BR /> Aims: In high-magnification events, the lens caustic may cross over the source disk, which allows determination of the angular size of the source and measurement of its limb darkening. <BR /> Methods: When such extended-source effects appear close to maximum magnification, the resulting light curve differs from the characteristic Paczyński point-source curve. The exact shape of the light curve close to the peak depends on the limb darkening of the source. Dense photometric coverage permits measurement of the respective limb-darkening coefficients. <BR /> Results: In the case of the microlensing event OGLE 2008-BLG-290, the K giant source star reached a peak magnification at about 100. Thirteen different telescopes have covered this event in eight different photometric bands. Subsequent light-curve analysis yielded measurements of linear limb-darkening coefficients of the source in six photometric bands. The best-measured coefficients lead to an estimate of the source effective temperature of about 4700[SUP]+100[/SUP][SUB]-200[/SUB] K. However, the photometric estimate from colour-magnitude diagrams favours a cooler temperature of 4200 ± 100 K. <BR /> Conclusions: Because the limb-darkening measurements, at least in the CTIO/SMARTS2 V_s- and I_s-bands, are among the most accurate obtained, the above disagreement needs to be understood. A solution is proposed, which may apply to previous events where such a discrepancy also appeared.
http://hdl.handle.net/2268/86411
10.1051/0004-6361/201014053
http://adsabs.harvard.edu/abs/2010A%26A...518A..51F
http://de.arxiv.org/abs/1005.0966

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