Article (Scientific journals)
Physical properties of the planetary systems WASP-45 and WASP-46 from simultaneous multiband photometry
Ciceri, S.; Mancini, L.; Southworth, J. et al.
2016In Monthly Notices of the Royal Astronomical Society, 456 (1), p. 990-1002
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Keywords :
Planets and satellites: fundamental parameters; Stars: fundamental parameters; Stars: individual: WASP-45; Stars: individual: WASP-46
Abstract :
[en] Accurate measurements of the physical characteristics of a large number of exoplanets are useful to strongly constrain theoretical models of planet formation and evolution, which lead to the large variety of exoplanets and planetary-system configurations that have been observed. We present a study of the planetary systemsWASP-45 andWASP-46, both composed of a mainsequence star and a close-in hot Jupiter, based on 29 new high-quality light curves of transits events. In particular, one transit of WASP-45 b and four of WASP-46 b were simultaneously observed in four optical filters, while one transit of WASP-46 b was observed with the NTT obtaining a precision of 0.30 mmag with a cadence of roughly 3 min. We also obtained five new spectra of WASP-45 with the FEROS spectrograph. We improved by a factor of 4 the measurement of the radius of the planet WASP-45 b, and found that WASP-46 b is slightly less massive and smaller than previously reported. Both planets now have a more accurate measurement of the density (0.959 ± 0.077 ρJup instead of 0.64 ± 0.30 ρJup for WASP-45 b, and 1.103 ± 0.052 ρJup instead of 0.94 ± 0.11 ρJup for WASP-46 b). We tentatively detected radius variations with wavelength for both planets, in particular in the case of WASP-45 b we found a slightly larger absorption in the redder bands than in the bluer ones. No hints for the presence of an additional planetary companion in the two systems were found either from the photometric or radial velocity measurements. © 2015 The Authors.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Ciceri, S.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany
Mancini, L.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany, INAF - Osservatorio Astrofisico di Torino, via Osservatorio 20, Pino Torinese, Italy
Southworth, J.;  Astrophysics Group, Keele University, Staffordshire, United Kingdom
Lendl, M.;  Austrian Academy of Sciences, Space Research Institute, Schmiedlstrasse 6, Graz, Austria, Observatoire de Genève, Université de Genève, Chemin des maillettes 51, Sauverny, Switzerland
Tregloan-Reed, J.;  Astrophysics Group, Keele University, Staffordshire, United Kingdom, NASA Ames Research Center, Moffett Field, CA, United States
Brahm, R.;  Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile, Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
Chen, G.;  Key Laboratory of Planetary Sciences, PurpleMountain Observatory, Chinese Academy of Sciences, Nanjing, Chile, Instituto de Astrofísica de Canarias, La Laguna, Tenerife, Spain
D'Ago, G.;  International Institute for Advanced Scientific Studies (IIASS), Via G. Pellegrino 19, Vietri Sul Mare (SA), Italy, Department of Physics 'E. R. Caianiello', University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA), Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
Dominik, M.;  SUPA, University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, Fife, United Kingdom
Figuera Jaimes, R.;  Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy, European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany
Galianni, P.;  Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
Harpsøe, K.;  Niels Bohr Institute, Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen K, Denmark
Hinse, T. C.;  Korea Astronomy and Space Science Institute, Daejeon, South Korea
Jørgensen, U. G.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany
Juncher, D.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany
Korhonen, H.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany, Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, Piikkiö, Finland
Liebig, C.;  Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
Rabus, M.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany, Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
Bonomo, A. S.;  INAF - Osservatorio Astrofisico di Torino, via Osservatorio 20, Pino Torinese, Italy
Bott, K.;  School of Physics, UNSW AustraliaNSW, Australia, AustralianCentre for Astrobiology, UNSW AustraliaNSW, Australia
Henning, T.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany
Jordán, A.;  Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile, Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
Sozzetti, A.;  INAF - Osservatorio Astrofisico di Torino, via Osservatorio 20, Pino Torinese, Italy
Alsubai, K. A.;  Qatar Environment and Energy Research Institute, Qatar Foundation, Tornado Tower, Floor 19, PO Box 5825, Doha, Qatar
Andersen, J. M.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany, Department of Astronomy, Boston University, 725 Commonwealth Avenue, Boston, MA, United States
Bajek, D.;  Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
Bozza, V.;  Department of Physics 'E. R. Caianiello', University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA), Italy
Bramich, D. M.;  AustralianCentre for Astrobiology, UNSW AustraliaNSW, Australia
Browne, P.;  Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
Calchi Novati, S.;  International Institute for Advanced Scientific Studies (IIASS), Via G. Pellegrino 19, Vietri Sul Mare (SA), Italy, Department of Physics 'E. R. Caianiello', University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA), Italy, NASA Exoplanet Science Institute, California Institute of Technology, MS 100-22, Pasadena, CA, United States
Damerdji, Yassine ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Diehl, C.;  Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mnchhofstraße 12-14, Heidelberg, Germany, Hamburger Sternwarte, Universität Hamburg, Gojenbergsweg 112, Hamburg, Germany
Elyiv, A.;  NASA Exoplanet Science Institute, California Institute of Technology, MS 100-22, Pasadena, CA, United States, Dipartimento di Fisica e Astronomia, Universit di Bologna, Viale Berti Pichat 6/2, Bologna, Italy, Main Astronomical Observatory, Academy of Sciences of Ukraine, vul. Akademika Zabolotnoho 27, Kyiv, Ukraine
Giannini, E.;  Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Aôut 17, Bât. B5C, Liège 1, Belgium
Gu, S.-H.;  Yunnan Observatories, Chinese Academy of Sciences, Kunming, China, Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China
Hundertmark, M.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany
Kains, N.;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, United States
Penny, M.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany, Department of Astronomy, Ohio State University, McPherson Laboratory, 140 West 18th Avenue, Columbus, OH, United States
Popovas, A.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany
Rahvar, S.;  Department of Physics, Sharif University of Technology, PO Box 11155-9161, Tehran, Iran
Scarpetta, G.;  International Institute for Advanced Scientific Studies (IIASS), Via G. Pellegrino 19, Vietri Sul Mare (SA), Italy, Department of Physics 'E. R. Caianiello', University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA), Italy, Department of Astronomy, Boston University, 725 Commonwealth Avenue, Boston, MA, United States
Schmidt, R. W.;  Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Aôut 17, Bât. B5C, Liège 1, Belgium
Skottfelt, J.;  European Southern Observatory, Karl-Schwarzschild Straße 2, Garching beiMünchen, Germany, Centre for Electronic Imaging, Dept. of Physical Sciences, The Open University, Milton Keynes, United Kingdom
Snodgrass, C.;  Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes, United Kingdom, Max Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, Göttingen, Germany
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Vilela, C.;  Astrophysics Group, Keele University, Staffordshire, United Kingdom
Wang, X.-B.;  Main Astronomical Observatory, Academy of Sciences of Ukraine, vul. Akademika Zabolotnoho 27, Kyiv, Ukraine, Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
Wertz, O.;  NASA Exoplanet Science Institute, California Institute of Technology, MS 100-22, Pasadena, CA, United States
More authors (38 more) Less
Language :
English
Title :
Physical properties of the planetary systems WASP-45 and WASP-46 from simultaneous multiband photometry
Publication date :
2016
Journal title :
Monthly Notices of the Royal Astronomical Society
ISSN :
0035-8711
eISSN :
1365-2966
Publisher :
Oxford University Press
Volume :
456
Issue :
1
Pages :
990-1002
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
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