Reference : The "666" collaboration on OGLE transits. I. Accurate radius of the planets OGLE-TR-1...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/27320
The "666" collaboration on OGLE transits. I. Accurate radius of the planets OGLE-TR-10b and OGLE-TR-56b with VLT deconvolution photometry
English
Pont, F. [Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland]
Moutou, C. [Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, BP 8, Les Trois Lucs, 13376 Marseille Cedex 12, France]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Udalski, A. [Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland]
Bouchy, F. [Observatoire de Haute-Provence, 04870 St-Michel l'Observatoire, France; Institut d'Astrophysique de Paris, 98bis Bd. Arago, 75014 Paris, France]
Fernandes, J. M. [Grupo de Astrofísica UC, Observatório Astronómico da Universidade de Coimbra, Santa Clara, Coimbra, Portugal]
Gieren, W. [Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile]
Mayor, M. [Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland]
Mazeh, T. [School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel]
Minniti, D. [Departmento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile]
Melo, C. [European Southern Observatory, Casilla 19001, Santiago 19, Chile]
Naef, D. [European Southern Observatory, Casilla 19001, Santiago 19, Chile]
Pietrzynski, G. [Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland]
Queloz, D. [Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland]
Ruiz, M. T. [Department of Astronomy, Universidad de Chile, Santiago, Chile]
Santos, N. C. [Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland; Centro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal; Centro de Geofisica de Évora, Rua Romão Ramalho 59, 7002-554 Évora, Portugal]
Udry, S. [Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland]
1-Apr-2007
Astronomy and Astrophysics
EDP Sciences
465
1069-1074
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: planetary systems ; techniques: photometric
[en] Transiting planets are essential to study the structure and evolution of extra-solar planets. For that purpose, it is important to measure precisely the radius of these planets. Here we report new high-accuracy photometry of the transits of OGLE-TR-10 and OGLE-TR-56 with VLT/FORS1. One transit of each object was covered in Bessel V and R filters, and treated with the deconvolution-based photometry algorithm DECPHOT, to ensure accurate millimagnitude light curves. Together with earlier spectroscopic measurements, the data imply a radius of 1.22{[SUP]+0.12[/SUP][SUB]-0.07[/SUB]} R[SUB]J[/SUB] for OGLE-TR-10b and 1.30 ± 0.05 R[SUB]J[/SUB] for OGLE-TR-56b. A re-analysis of the original OGLE photometry resolves an earlier discrepancy about the radius of OGLE-TR-10. The transit of OGLE-TR-56 is almost grazing, so that small systematics in the photometry can cause large changes in the derived radius. Our study confirms both planets as inflated hot Jupiters, with large radii comparable to that of HD 209458b and at least two other recently discovered transiting gas giants. Based on data collected with the FORS1 imager at the VLT-Kueyen telescope (Paranal Observatory, ESO, Chile) in the programme 177.C-0666E.
http://hdl.handle.net/2268/27320
10.1051/0004-6361:20066645
http://adsabs.harvard.edu/abs/2007A%26A...465.1069P
http://de.arxiv.org/abs/astro-ph/0610827

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