stars: fundamental parameters; stars: individual: WASP-15; stars: individual: WASP-16; planetary systems
Abstract :
[en] We present new photometric observations of WASP-15 and WASP-16, two transiting extrasolar planetary systems with measured orbital obliquities but without photometric follow-up since their discovery papers. Our new data for WASP-15 comprise observations of one transit simultaneously in four optical passbands using GROND on the MPG/European Southern Observatory (ESO) 2.2 m telescope, plus coverage of half a transit from DFOSC on the Danish 1.54 m telescope, both at ESO La Silla. For WASP-16 we present observations of four complete transits, all from the Danish telescope. We use these new data to refine the measured physical properties and orbital ephemerides of the two systems. Whilst our results are close to the originally determined values for WASP-15, we find that the star and planet in the WASP-16 system are both larger and less massive than previously thought.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Southworth, John; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Mancini, L.; Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany ; Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, I-84084-Fisciano (SA), Italy
Browne, P.; SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
Burgdorf, M.; HE Space Operations GmbH, Flughafenallee 24, D-28199 Bremen, Germany
Calchi Novati, S.; Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, I-84084-Fisciano (SA), Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), I-84019 Vietri Sul Mare (SA), Italy
Dominik, M.; SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
Gerner, T.; Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, D-69120 Heidelberg, Germany
Hinse, T. C.; Korea Astronomy and Space Science Institute, Daejeon 305-348, Republic of Korea
Jørgensen, U. G.; Niels Bohr Institute, Københavns Universitet, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark ; Centre for Star and Planet Formation, Natural History Museum of Denmark, Københavns Universitet, Øster Voldgade 5-7, DK-1350 København K, Denmark
Kains, N.; European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching bei München, Germany
Ricci, Davide ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Schönebeck, F.; Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, D-69120 Heidelberg, Germany
Tregloan-Reed, J.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Alsubai, K. A.; Qatar Foundation, PO Box 5825, Doha, Qatar
Bozza, V.; Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, I-84084-Fisciano (SA), Italy ; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, I-80126, Napoli, Italy
Chen, G.; Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany ; Purple Mountain Observatory & Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, China
Dodds, P.; SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
Fang, X.-S.; National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
Finet, F.; Institut d'Astrophysique et de Géophysique, Université de Liège, B-4000 Liège, Belgium
Gu, S.-H.; National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
Hardis, S.; Niels Bohr Institute, Københavns Universitet, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark ; Centre for Star and Planet Formation, Natural History Museum of Denmark, Københavns Universitet, Øster Voldgade 5-7, DK-1350 København K, Denmark
Harpsøe, K.; Niels Bohr Institute, Københavns Universitet, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark ; Centre for Star and Planet Formation, Natural History Museum of Denmark, Københavns Universitet, Øster Voldgade 5-7, DK-1350 København K, Denmark
Henning, Th; Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany
Hundertmark, M.; SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
Jessen-Hansen, J.; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Kerins, E.; Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester M13 9PL, UK
Kjeldsen, H.; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Liebig, C.; SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
Lund, M. N.; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Lundkvist, M.; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Mathiasen, M.; Niels Bohr Institute, Københavns Universitet, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark ; Centre for Star and Planet Formation, Natural History Museum of Denmark, Københavns Universitet, Øster Voldgade 5-7, DK-1350 København K, Denmark
Nikolov, N.; Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany ; Astrophysics Group, University of Exeter, Stocker Road, EX4 4QL Exeter, UK
Penny, M. T.; Department of Astronomy, Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
Proft, S.; Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, D-69120 Heidelberg, Germany
Rahvar, S.; Department of Physics, Sharif University of Technology, PO Box 11155-9161, Tehran, Iran
Sahu, K.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Scarpetta, G.; Dipartimento di Fisica `E. R. Caianiello', Università di Salerno, Via Ponte Don Melillo, I-84084-Fisciano (SA), Italy ; Istituto Internazionale per gli Alti Studi Scientifici (IIASS), I-84019 Vietri Sul Mare (SA), Italy ; Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, I-80126, Napoli, Italy
Skottfelt, J.; Niels Bohr Institute, Københavns Universitet, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark ; Centre for Star and Planet Formation, Natural History Museum of Denmark, Københavns Universitet, Øster Voldgade 5-7, DK-1350 København K, Denmark
Snodgrass, C.; Max-Planck-Institute for Solar System Research, Max-Planck Str. 2, D-37191 Katlenburg-Lindau, Germany
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Wertz, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Blackwell D. E., Petford A. D., Shallis M. J., 1980, A&A, 82, 249
Brown D. J. A. et al., 2012, MNRAS, 423, 1503
Carter J. A., Yee J. C., Eastman J., Gaudi B. S.,Winn J. N., 2008, ApJ, 689, 499
Claret A., 2004, A&A, 424, 919
Demarque P., Woo J.-H., Kim Y.-C., Yi S. K., 2004, ApJS, 155, 667
Dotter A., Chaboyer B., Jevremović D., Kostov V., Baron E., Ferguson J. W., 2008, ApJS, 178, 89
Doyle A. P. et al., 2013, MNRAS, 428, 3164
Eastman J., Siverd R., Gaudi B. S., 2010, PASP, 122, 935
Enoch B., Collier Cameron A., Parley N. R., Hebb L., 2010, A&A, 516, A33
Hébrard G. et al., 2013, A&A, 549, A134
Lister T. A. et al., 2009, ApJ, 703, 752
Mancini L. et al., 2013a, A&A, 551, A11
Mancini L. et al., 2013b, MNRAS, 430, 2932
Maxted P. F. L., Koen C., Smalley B., 2011, MNRAS, 418, 1039
Nikolov N., Chen G., Fortney J., Mancini L., Southworth J., van Boekel R., Henning T., 2013, A&A, 553, A26
Pietrinferni A., Cassisi S., Salaris M., Castelli F., 2004, ApJ, 612, 168
Pont F., Husnoo N., Mazeh T., Fabrycky D., 2011, MNRAS, 414, 1278
Safronov V. S., 1972, Evolution of the Protoplanetary Cloud and Formation of the Earth and Planets. Israel Program for Scientific Translation, Jerusalem
Southworth J., 2008, MNRAS, 386, 1644
Southworth J., 2009, MNRAS, 394, 272
Southworth J., 2010, MNRAS, 408, 1689
Southworth J., 2011, MNRAS, 417, 2166
Southworth J., 2012, MNRAS, 426, 1291
Southworth J., Maxted P. F. L., Smalley B., 2004, MNRAS, 349, 547
Southworth J., Maxted P. F. L., Smalley B., 2005, A&A, 429, 645
Southworth J. et al., 2009a, MNRAS, 396, 1023
Southworth J. et al., 2009b, ApJ, 707, 167
Southworth J., Mancini L., Maxted P. F. L., Bruni I., Tregloan-Reed J., Barbieri M., Ruocco N., Wheatley P. J., 2012a, MNRAS, 422, 3099