Okayama Planet Search Program

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The Okayama Planet Search Program (OPSP) was started in 2001 with the goal of spectroscopically searching for planetary systems around stars. It reported on the detection of 3 new extrasolar planets: (18 Delphini b, xi Aql b, and 41 Lyncis b), around intermediate-mass G and K giants 18 Delphini, Xi Aquilae, and HD 81688. Also, it updated the orbital parameters of HD 104985 b, the first planet discovered around the G giants from the survey, by using the data collected during the past six years. Since 2001, it has been conducting a precise Doppler survey of about 300 G and K giants using a 1.88m telescope, the High Dispersion Echelle Spectrograph (HIDES), and an iodine absorption cell I2 cell at the Okayama Astrophysical Observatory (OAO).

Discoveries[edit]

Planets discovered
Name Mass (MJ) Discovery date
18 Delphini b 10.3 2008
Xi Aquilae b 2.8 2008
41 Lyncis b 2.7 2008
81 Ceti b 5.3 2008
14 Andromedae b 4.8 2008
6 Lyncis b 2.01 2008

Observatory[edit]

References[edit]

  • Sato, Bun'ei; et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan. 60 (6): 1317–1326. arXiv:0807.0268. Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317. S2CID 67841762.
  • "Okayama Astrophysical Observatory Homepage". oao.nao.ac.jp. Retrieved 2008-10-11.
  • "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, Xi Aquilae, and HD81688" (PDF). www.oao.nao.ac.jp. Retrieved 2008-10-11.
  • "telescope". oao.nao.ac.jp. Retrieved 2008-10-11.