Okayama Planet Search Program

Okayama Planet Search Program was started in 2001, spectroscopically searching for planetary systems around stars, reporting on the detection of 3 new extrasolar planets (18 Delphini b, ksi Aql b, HD 81688b) around intermediate-mass G and K giants 18 Delphini, Xi Aquilae, HD 81688. Also, it updated the orbital parameters of HD 104985 b, the first planet discovered around G giants from our 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 - the internal statistical error can be very small.) at Okayama Astrophysical Observatory (OAO), for precise radial velocity measurements. Use of numerical calculations suggest that Jupiter-mass planets within about (distance range) ^+0.5
_−0.25 AU in function of the metallicity and adopted models).

Observatory

• Okayama Astrophysical Observatory, Kurashiki in Japan

References

• "Okayama Astrophysical Observatory Homepage". http://www.oao.nao.ac.jp. Retrieved 2008-10-11. {{cite web}}: External link in |work= (help)
• "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, Xi Aquilae, and HD81688" (PDF). http://www.oao.nao.ac.jp. Retrieved 2008-10-11. {{cite web}}: External link in |work= (help)
• "telescope". http://www.oao.nao.ac.jp. Retrieved 2008-10-11. {{cite web}}: External link in |work= (help)