[en] We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in the 2005 season (Campaign #5). About twenty of the most promising candidates discovered in these data were subsequently verified spectroscopically with the VLT/FLAMES spectrograph. One of the candidates, OGLE-TR-211, reveals clear changes of radial velocity with a small amplitude of 82 m/s, varying in phase with photometric transit ephemeris. Further analysis confirms the planetary nature of this system. Follow-up precise photometry of OGLE-TR-211 with VLT/FORS, together with radial velocity spectroscopy, supplemented with high-resolution, high S/N VLT/UVES spectra allowed us to derive parameters of the planet and host star. OGLE-TR-211b is a hot Jupiter orbiting an F7-8 spectral type dwarf star with a period of 3.68 days. The mass of the planet is equal to 1.03±0.20 M_Jup, while its radius 1.36[SUP]+0.18[/SUP][SUB]-0.09[/SUB] R_Jup. The radius is about 20% larger than the typical radius of hot Jupiters of similar mass. OGLE-TR-211b is, then, another example of inflated hot Jupiters - a small group of seven exoplanets with large radii and unusually low densities - objects that are a challenge to the current models of exoplanets. Based on observations made with the FORS1 camera and the FLAMES/UVES spectrograph at the VLT, ESO, Chile (program 07.C-0706, 076.C-0122, and 177.C-0666) and 1.3-m Warsaw Telescope at Las Campanas Observatory, Chile.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Udalski, A.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland ; The OGLE Team
Pont, F.; Observatoire de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Naef, D.; European Southern Observatory, Casilla 19001, Santiago 19, Chile
Melo, C.; European Southern Observatory, Casilla 19001, Santiago 19, Chile
Bouchy, F.; Institut d'Astrophysique de Paris, 98bis Bd Arago, 75014 Paris, France
Santos, N. C.; Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
Moutou, C.; Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, BP 8, Les Trois Lucs, 13376 Marseille Cedex 12, France
Díaz, R. F.; Instituto de Astronomia y Física del Espacio (CONICET-UBA), Buenos Aires, Argentina
Gieren, W.; Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Hoyer, S.; Department of Astronomy, Universidad de Chile, Santiago, Chile
Mayor, M.; Observatoire de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Mazeh, T.; School of Physics and Astronomy, R. and B. 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
Pietrzynski, G.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland ; The OGLE Team ; Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Queloz, D.; Observatoire de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Ramirez, S.; Institut d'Astrophysique de Paris, 98bis Bd Arago, 75014 Paris, France
Ruiz, M. T.; Department of Astronomy, Universidad de Chile, Santiago, Chile
Shporer, A.; School of Physics and Astronomy, R. and B. Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
Tamuz, O.; School of Physics and Astronomy, R. and B. Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
Udry, S.; Observatoire de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Zoccali, M.; Departmento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile
Kubiak, M.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland ; The OGLE Team
Szymanski, M. K.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
Szewczyk, O.; Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland ; The OGLE Team ; Departamento de Fisica, Astronomy Group, Universidad de Concepción, Casilla 160-C, Concepción, Chile
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Bouchy, F., Pont, F., Santos, N. C., et al. 2004, A&A, 421, L.13
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.