No evidence of a hot Jupiter around HD 188753 A

A. Eggenberger*, S. Udry, T. Mazeh, Y. Segal, M. Mayor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Context. The discovery of a short-period giant planet (a hot Jupiter) around the primary component of the triple star system HD 188753 has often been considered as an important observational evidence and as a serious challenge to planet-formation theories. Aims. Following this discovery, we monitored HD 188753 during one year to better characterize the planetary orbit and the feasibility of planet searches in close binaries and multiple star systems. Methods. We obtained Doppler measurements of HD 188753 with the ELODIE spectrograph at the Observatoire de Haute-Provence. We then extracted radial velocities for the two brightest components of the system using our multi-order, two-dimensional correlation algorithm, TODCOR. Results. Our observations and analysis do not confirm the existence of the short-period giant planet previously reported around HD 188753 A. Monte Carlo simulations show that we had both the precision and the temporal sampling required to detect a planetary signal like the one quoted. Conclusions. From our failure to detect the presumed planet around HD 188753 A and from the available data on HD 188753, we conclude that there is currently no convincing evidence of a close-in giant planet around HD 188753 A.

Original languageEnglish
Pages (from-to)1179-1183
Number of pages5
JournalAstronomy and Astrophysics
Issue number3
StatePublished - May 2007


  • Stars: binaries: spectroscopic
  • Stars: individual: HD 188753
  • Stars: planetary systems
  • Techniques: radial velocities


Dive into the research topics of 'No evidence of a hot Jupiter around HD 188753 A'. Together they form a unique fingerprint.

Cite this