Article (Scientific journals)
The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
Demangeon, O. D. S.; Faedi, F.; Hébrard, G. et al.
2018In Astronomy and Astrophysics, 610
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Keywords :
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; Ultraviolet irradiations; Orbits
Abstract :
[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.
Research center :
FCT - Fundação para a Ciência e a Tecnologia
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Demangeon, O. D. S.;  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, Laetitia ;  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  ;  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  ;  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
More authors (28 more) Less
Language :
English
Title :
The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
Publication date :
2018
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences
Volume :
610
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
313014; 312430; FP7/2013-2016; RG226604; UID/FIS/04434/2013; IF/01312/2014/CP1215/CT0004; P7, Seventh Framework Programme; 2.5.594.09; 2015-019-R; ST/P000584/1
Funders :
NSF - National Science Foundation [US-VA]
KASI - Korea Astronomy and Space Science Institute [JP]
ESO - European School of Oncology
ARC - Australian Research Council [AU]
ASRF - Applied Scientific Research Fund [JO]
CNRS - Centre National de la Recherche Scientifique [FR]
SFTC - Science and Technology Facilities Council [GB]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
FEDER - Fonds Européen de Développement Régional [BE]
UK Space Agency [GB]
University of Warwick [GB]
FWB - Fédération Wallonie-Bruxelles [BE]
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