Using the Sun to estimate Earth-like planets detection capabilities. III (A.-M. Lagrange et al.)

Vol. 528
In section 1. Letters

Using the Sun to estimate Earth-like planets detection capabilities. III. Impact of spots and plages on astrometric detection

In the past several, groups have applied astrometric methods to search for extrasolar planets, but all the claims remain controversial. Improved ground- and space-based instruments have the potential to change this. The authors of this paper investigate the limitations on astrometric detections resulting from stellar activity, using the Sun as a template. This work shows that stellar activity would not prevent the detection of an Earth-Sun system even if the level of activity is increased fivefold over the Sun today.