Tight constraints on the existence of additional planets around HD 189733

  1. M. Hrudková1,2,3,*,
  2. I. Skillen2,
  3. C. R. Benn2,
  4. N. P. Gibson4,5,
  5. D. Pollacco4,
  6. D. Nesvorný6,
  7. T. Augusteijn7,
  8. S. M. Tulloch2,
  9. Y. C. Joshi4,8

Article first published online: 15 FEB 2010

DOI: 10.1111/j.1365-2966.2010.16247.x

Issue

Monthly Notices of the Royal Astronomical Society

Monthly Notices of the Royal Astronomical Society

Volume 403, Issue 4, pages 2111–2119, April 2010

Additional Information

How to Cite

Hrudková, M., Skillen, I., Benn, C. R., Gibson, N. P., Pollacco, D., Nesvorný, D., Augusteijn, T., Tulloch, S. M. and Joshi, Y. C. (2010), Tight constraints on the existence of additional planets around HD 189733. Monthly Notices of the Royal Astronomical Society, 403: 2111–2119. doi: 10.1111/j.1365-2966.2010.16247.x

Author Information

  1. 1

    Astronomical Institute of the Charles University, V Holešovičkách 2, CZ-180 00 Praha 8, Czech Republic

  2. 2

    Isaac Newton Group of Telescopes, Apartado de Correos 321, E-387 00 Santa Cruz de la Palma, Canary Islands, Spain

  3. 3

    Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany

  4. 4

    Queen's University Belfast, University Road, Belfast BT7 1NN

  5. 5

    School of Physics, University of Exeter, Exeter EX4 4QL

  6. 6

    Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 400, Boulder, CO 80302, USA

  7. 7

    Nordic Optical Telescope, Apartado de Correos 474, E-387 00 Santa Cruz de la Palma, Canary Islands, Spain

  8. 8

    Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263129, India

* E-mail: marie@tls-tautenburg.de

Publication History

  1. Issue published online: 6 APR 2010
  2. Article first published online: 15 FEB 2010
  3. Accepted 2009 December 23. Received 2009 November 11; in original form 2009 August 24

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (1453K)

Keywords:

  • techniques: photometric;
  • stars: individual: HD 189733;
  • planetary systems

ABSTRACT

We report a transit timing study of the transiting exoplanetary system HD 189733. In total, we observed 10 transits in 2006 and 2008 with the 2.6-m Nordic Optical Telescope, and two transits in 2007 with the 4.2-m William Herschel Telescope. We used Markov Chain Monte Carlo simulations to derive the system parameters and their uncertainties, and our results are in a good agreement with previously published values. We performed two independent analyses of transit timing residuals to place upper mass limits on putative perturbing planets. The results show no evidence for the presence of planets down to 1 Earth mass near the 1:2 and 2:1 resonance orbits, and planets down to 2.2 Earth masses near the 3:5 and 5:3 resonance orbits with HD 189733b. These are the strongest limits to date on the presence of other planets in this system.

View Full Article (HTML) Get PDF (1453K)