Reference : High-precision photometry by telescope defocusing - III. The transiting planetary sys...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/86417
High-precision photometry by telescope defocusing - III. The transiting planetary system WASP-2 star
English
Southworth, John [Astrophysics Group, Keele University, Newcastle-under Lyme, Staffordshire ST5 5BG]
Mancini, L. [Dipartimento di Ingegneria, Università del Sannio, Corso Garibaldi 107, 82100-Benevento, Italy; Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, 84084-Fisciano (SA), Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), 84019 Vietri Sul Mare (SA), Italy]
Novati, S Calchi [Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, 84084-Fisciano (SA), Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), 84019 Vietri Sul Mare (SA), Italy]
Dominik, M. [SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS]
Glitrup, M. [Department of Physics & Astronomy, Aarhus University, Ny Munkegade, 8000 Aarhus C, Denmark]
Hinse, T. C. [Armagh Observatory, College Hill, Armagh BT61 9DG; Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark]
Jørgensen, U. G. [Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark; Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5-7, 1350 Copenhagen, Denmark]
Mathiasen, M. [Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark]
Ricci, Davide mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Maier, G. [Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany]
Zimmer, F. [Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany]
Bozza, V. [Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, 84084-Fisciano (SA), Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), 84019 Vietri Sul Mare (SA), Italy]
Browne, P. [SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS]
Bruni, I. [INAF - Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy]
Burgdorf, M. [Deutsches SOFIA Institut, Universitaet Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany; Deutsches SOFIA Institut, NASA Ames Research Center, Mail Stop 211-3, Moffett Field, CA 94035, USA]
Dall'Ora, M. [INAF - Osservatorio Astronomico di Capodimonte, Via Moiarello 16, 80131 Napoli, Italy]
Finet, François mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Harpsøe, K. [Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark]
Hundertmark, M. [Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany]
Liebig, C. [Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany]
Rahvar, S. [Department of Physics, Sharif University of Technology, PO Box 11155-9161, Tehran, Iran]
Scarpetta, G. [Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, 84084-Fisciano (SA), Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), 84019 Vietri Sul Mare (SA), Italy]
Skottfelt, J. [Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark]
Smalley, B. [Astrophysics Group, Keele University, Newcastle-under Lyme, Staffordshire ST5 5BG]
Snodgrass, C. [European Southern Observatory, Casilla 19001, Santiago 19, Chile; Max-Planck-Institute for Solar System Research, Max-Planck Str. 2, 37191 Katlenburg-Lindau, Germany]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
1-Nov-2010
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
408
1680-1688
Yes (verified by ORBi)
International
0035-8711
Oxford
United Kingdom
[en] binaries: eclipsing ; stars: individual: WASP-2 ; planetary systems
[en] ABSTRACT We present high-precision photometry of three transits of the extrasolar planetary system WASP-2, obtained by defocusing the telescopes, and achieving scatters of between 0.42 and 0.73 mmag versus the best-fitting model. These data are modelled using the JKTEBOP code, and taking into account the light from the recently discovered faint star close to the system. The physical properties of the WASP-2 system are derived using tabulated predictions from five different sets of stellar evolutionary models, allowing both statistical and systematic error bars to be specified. We find the mass and radius of the planet to be M[SUB]b[/SUB] = 0.846 +/- 0.055 +/- 0.023M[SUB]Jup[/SUB] and R[SUB]b[/SUB] = 1.043 +/- 0.029 +/- 0.015R[SUB]Jup[/SUB]. It has a low equilibrium temperature of 1281 +/- 21K, in agreement with a recent finding that it does not have an atmospheric temperature inversion. The first of our transit data sets has a scatter of only 0.42mmag with respect to the best-fitting light-curve model, which to our knowledge is a record for ground-based observations of a transiting extrasolar planetary system. Based on data collected by MiNDSTEp with the Danish 1.54-m telescope at the ESO La Silla Observatory. E-mail: jkt@astro.keele.ac.uk ‡ Royal Society University Research Fellow.
Researchers ; Professionals
http://hdl.handle.net/2268/86417
10.1111/j.1365-2966.2010.17238.x
http://adsabs.harvard.edu/abs/2010MNRAS.408.1680S
The authors thank arXiv.org for their deposit authorization and Blackwell Publishing for publication
http://de.arxiv.org/abs/1006.4464

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Wasp-2.pdfAuthor preprint498.22 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.