Phase folded measurements of HD 69830

The HARPS radial velocity measurements of HD 69830 are folded with the orbital periods of the three discovered planets: 8.67, 31.6 and 197 days, respectively. In each case, the contribution of the two other planets has been subtracted. The solid line shows the best fit to the measurements, corresponding to minimum masses of 10.2, 11.8 and 18.1 Earth masses. Note that the full span of the vertical axis is only 13 m/s! Error bars indicate the accuracy of the measurements. The integration time was 4 minutes on average for the first 18 measurements (shown as open dots), and was increased to 15 minutes for the remaining points (full dots). The latter measurements are therefore of much higher quality.



About the Image

Release date:18 May 2006
Related releases:eso0618
Size:1015 x 1444 px

About the Object

Name:HD 69830
Type:Milky Way : Star : Circumstellar Material : Planetary System
Distance:40 light years

Image Formats

Large JPEG
349.6 KB
Screensize JPEG
288.8 KB

Colours & filters

OpticalESO 3.6-metre telescope