Reference : The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/228605
The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
English
Demangeon, O. D. S. mailto [Instituto de Astrofísica e Ciências Do Espaço, Universidade Do Porto, CAUP, Rua das Estrelas, Porto, Portugal]
Faedi, F. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom, INAF-Osservatorio Astrofisico di Catania, via S. Sofia 78, Catania, Italy]
Hébrard, G. [Institut d'Astrophysique de Paris, CNRS, Université Pierre and Marie Curie, 98bis boulevard Arago, Paris, France, Observatoire de Haute-Provence, Université d'Aix-Marseille, Saint Michel, France]
Brown, D. J. A. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Barros, S. C. C. [Instituto de Astrofísica e Ciências Do Espaço, Universidade Do Porto, CAUP, Rua das Estrelas, Porto, Portugal]
Doyle, A. P. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Maxted, P. F. L. [Astrophysics Group, Keele University, Staffordshire, United Kingdom]
Cameron, A. C. [Centre for Exoplanet Science, SUPA, University of St. Andrews, St. Andrews, United Kingdom]
Hay, K. L. [Centre for Exoplanet Science, SUPA, University of St. Andrews, St. Andrews, United Kingdom]
Alikakos, J. [Institute for Astronomy Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Penteli, Greece]
Anderson, D. R. [Astrophysics Group, Keele University, Staffordshire, United Kingdom]
Armstrong, D. J. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom, Astrophysics Research Centre, Queen's University Belfast, University Road, Belfast, United Kingdom]
Boumis, P. [Institute for Astronomy Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Penteli, Greece]
Bonomo, A. S. [INAF, via Osservatorio 20, Pino Torinese, Italy]
Bouchy, F. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland]
Delrez, L. [Cavendish Laboratory, JJ Thompson Avenue, Cambridge, United Kingdom, Space Sciences Technologies and Astrophysics Research, Université de Liège, Alleé du 6 Août 17, Liège, Belgium]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Haswell, C. A. [School of Physical Sciences, Open University, Milton Keynes, United Kingdom]
Hellier, C. [Astrophysics Group, Keele University, Staffordshire, United Kingdom]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Kiefer, F. [Institut d'Astrophysique de Paris, CNRS, Université Pierre and Marie Curie, 98bis boulevard Arago, Paris, France]
Lam, K. W. F. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Lendl, M. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland, Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, Graz, Austria]
Mancini, L. [INAF, via Osservatorio 20, Pino Torinese, Italy, Max Planck Institue for Astronomy, Königstuhl 17, Heidelberg, Germany, Department of Physics, University of Rome Tor Vergata, via della Ricerca Scientifica 1, Rome, Italy]
McCormac, J. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Norton, A. J. [School of Physical Sciences, Open University, Milton Keynes, United Kingdom]
Osborn, H. P. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Palle, E. [Instituto de Astrosfísica de Canarias, La Laguna, Tenerife, Spain, Departamento de Astrofísica, Universidad de la Laguna, La laguna, Tenerife, Spain]
Pepe, F. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland]
Pollacco, D. L. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Prieto-Arranz, J. [Instituto de Astrosfísica de Canarias, La Laguna, Tenerife, Spain, Departamento de Astrofísica, Universidad de la Laguna, La laguna, Tenerife, Spain]
Queloz, D. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland, Cavendish Laboratory, JJ Thompson Avenue, Cambridge, United Kingdom]
Ségransan, D. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland]
Smalley, B. [Astrophysics Group, Keele University, Staffordshire, United Kingdom]
Triaud, A. H. M. J. [Institute of Astronomy, Madingley Road, Cambridge, United Kingdom, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, United Kingdom]
Udry, S. [Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, Sauverny, Switzerland]
West, R. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
Wheatley, P. J. [University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, United Kingdom]
2018
Astronomy and Astrophysics
EDP Sciences
610
Yes (verified by ORBi)
International
00046361
[en] Planets and satellites: Detection ; Stars: Individual: WASP-151 ; Stars: Individual: WASP-153 ; Stars: Individual: WASP-156 ; Techniques: Photometric ; Techniques: Radial velocities ; Extrasolar planets ; Planets ; Satellites ; Space research ; Stars ; Equilibrium temperatures ; Giant planet migrations ; Orbital periods ; Planets and satellites: detections ; Stars: individual ; Techniques: photometric ; Techniques: radial velocities ; Ultraviolet irradiations ; Orbits
[en] To investigate the origin of the features discovered in the exoplanet population, the knowledge of exoplanets' mass and radius with a good precision (10%) is essential. To achieve this purpose the discovery of transiting exoplanets around bright stars is of prime interest. In this paper, we report the discovery of three transiting exoplanets by the SuperWASP survey and the SOPHIE spectrograph with mass and radius determined with a precision better than 15%. WASP-151b and WASP-153b are two hot Saturns with masses, radii, densities and equilibrium temperatures of 0.31-0.03 +0.04 MJ, 1.13-0.03 +0.03 RJ, 0.22-0.02 +0.03 ρJ and 1290-10 +20 K, and 0.39-0.02 +0.02 MJ, 1.55-0.08 +0.10 RJ, 0.11-0.02 +0.02 ρJ and 1700-40 +40 K, respectively. Their host stars are early G type stars (with mag V ~ 13) and their orbital periods are 4.53 and 3.33 days, respectively. WASP-156b is a super-Neptune orbiting a K type star (mag V = 11.6). It has a mass of 0.128-0.009 +0.010 MJ, a radius of 0.51-0.02 +0.02 RJ, a density of 1.0-0.1 +0.1 ρJ, an equilibrium temperature of 970-20 +30 K and an orbital period of 3.83 days. The radius of WASP-151b appears to be only slightly inflated, while WASP-153b presents a significant radius anomaly compared to a recently published model. WASP-156b, being one of the few well characterized super-Neptunes, will help to constrain the still debated formation of Neptune size planets and the transition between gas and ice giants. The estimates of the age of these three stars confirms an already observed tendency for some stars to have gyrochronological ages significantly lower than their isochronal ages. We propose that high eccentricity migration could partially explain this behavior for stars hosting a short period planet. Finally, these three planets also lie close to (WASP-151b and WASP-153b) or below (WASP-156b) the upper boundary of the Neptunian desert. Their characteristics support that the ultra-violet irradiation plays an important role in this depletion of planets observed in the exoplanet population. © 2018 ESO.
NSF, National Science Foundation; KASI, Korea Astronomy and Space Science Institute; 313014; 312430; FP7/2013-2016; RG226604; ESO, European School of Oncology; ARC, Australian Research Council; ASRF, Applied Scientific Research Fund; F.R.S.-FNRS, CNRS, Centre National de la Recherche Scientifique; POCI-01-0145-FEDER-007672, FCT, Fundação para a Ciência e a Tecnologia; FCT, FCT, Fundação para a Ciência e a Tecnologia; PTDC/FIS-AST/1526/2014&POCI-01-0145-FEDER-016886, FCT, Fundação para a Ciência e a Tecnologia; UID/FIS/04434/2013, FCT, Fundação para a Ciência e a Tecnologia; IF/01312/2014/CP1215/CT0004, FCT, Fundação para a Ciência e a Tecnologia; FP7, Seventh Framework Programme; SNF, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; SNF, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; CNRS, Centre National de la Recherche Scientifique; STFC, Science and Technology Facilities Council; Keele University; STFC, Science and Technology Facilities Council; OU, Open University; 2.5.594.09; University of Warwick; Gruber Foundation; 2015-019-R, INAF, Istituto Nazionale di Astrofisica; LJMU, Liverpool John Moores University; ST/P000584/1, STFC, Science and Technology Facilities Council
http://hdl.handle.net/2268/228605
10.1051/0004-6361/201731735

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