On the Feasibility of Intense Radial Velocity Surveys for Earth-Twin Discoveries

Monday 2 July, 12:05

The detection of an Earth-mass planet in the habitable zone of a solar type star will be a ground breaking discovery. Current instruments are just shy of the accuracy needed to make these detections, and we are still confounded by the quasi-periodic stellar signals. The HARPS3 instrument is designed to have the measurement accuracy required to make this discovery, and the Terra Hunting Experiment will have a unique and intense observation schedule to help combat the stellar signals.

I present an end to end simulation of HARPS3 radial velocity data and use a multi-nested Bayesian analysis package to find the planetary candidates within the data. We factor in the full 3D Keplerian system architecture, realistic simulated stellar noise, a proposed observation schedule, and location specific weather patterns for our entire 10 year survey. I will discuss our promising results in the context of detecting long period earth planets and compare them to simulated results of a typical radial velocity survey. We also include the results of a continuous data series, representing the space-observatory case.

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