Observatoire de Paris
<-   Gamma Cep and Epsilon Eri, exoplanets or illusions ?   ->
Mauna Kea, in Hawaii. The Canada-France-Hawaii telescope (CFHT) enabled the study of lots of astrophysical phenomena.
Copyright : Jean-Charles Cuillandre (CFHT)

In 1988, the Canadians Bruce Campbell, Gordon Walker and Stephensen Yang published their results on 6 years of spectroscopic observations of 23 solar stars with the Canada-France-Hawaii telescope (site mirror of CFHT).

Some of these stars, in particular gamma Cephei and epsilon Eridani, were then suspected to contain planets. In 1992, one showed that in actuality, the variations observed were due to the chromospheric activity of the stars.
Out of pique, Bruce Campbell decided to quit working in astronomy and work in the private sector.

But this is not the end of the story....

In 2000, Artie Hatzes, from McDonald Observatory (Texas), and his colleagues finally argued that the variations of epsilon Eridani are probably due to the presence of a planet of 0,86 MJ and a period of 7 years! Their study was based on the analysis of six sets of data from four different telescopes.

Then in 2002, Hatzes et al. claimed that gamma Cephei also had a planet (with a period of 2.5 years and a mass of 1,7 MJ).