%0 Generic %1 leleu2017detection %A Leleu, Adrien %A Robutel, Philippe %A Correia, Alexandre C M %A Lillo-Box, Jorge %D 2017 %K exoplanet %R 10.1051/0004-6361/201630073 %T Detection of co-orbital planets by combining transit and radial-velocity measurements %U http://arxiv.org/abs/1702.08775 %X Co-orbital planets have not yet been discovered, although they constitute a frequent by-product of planetary formation and evolution models. This lack may be due to observational biases, since the main detection methods are unable to spot co-orbital companions when they are small or near the Lagrangian equilibrium points. However, for a system with one known transiting planet (with mass $m_1$), we can detect a co-orbital companion (with mass $m_2$) by combining the time of mid-transit with the radial-velocity data of the star. Here, we propose a simple method that allows the detection of co-orbital companions, valid for eccentric orbits, that relies on a single parameter $\alpha$, which is proportional to the mass ratio $m_2/m_1$. Therefore, when $\alpha$ is statistically different from zero, we have a strong candidate to harbour a co-orbital companion. We also discuss the relevance of false positives generated by different planetary configurations.

@misc{leleu2017detection, abstract = {Co-orbital planets have not yet been discovered, although they constitute a frequent by-product of planetary formation and evolution models. This lack may be due to observational biases, since the main detection methods are unable to spot co-orbital companions when they are small or near the Lagrangian equilibrium points. However, for a system with one known transiting planet (with mass $m_1$), we can detect a co-orbital companion (with mass $m_2$) by combining the time of mid-transit with the radial-velocity data of the star. Here, we propose a simple method that allows the detection of co-orbital companions, valid for eccentric orbits, that relies on a single parameter $\alpha$, which is proportional to the mass ratio $m_2/m_1$. Therefore, when $\alpha$ is statistically different from zero, we have a strong candidate to harbour a co-orbital companion. We also discuss the relevance of false positives generated by different planetary configurations.}, added-at = {2017-03-01T16:20:29.000+0100}, author = {Leleu, Adrien and Robutel, Philippe and Correia, Alexandre C M and Lillo-Box, Jorge}, biburl = {https://www.bibsonomy.org/bibtex/2d5161658b667e99c1a04ede0c36d6ca6/superjenwinters}, description = {Detection of co-orbital planets by combining transit and radial-velocity measurements}, doi = {10.1051/0004-6361/201630073}, interhash = {870ae6f0df7f5187cd404bc3f2af9884}, intrahash = {d5161658b667e99c1a04ede0c36d6ca6}, keywords = {exoplanet}, note = {cite arxiv:1702.08775}, timestamp = {2017-03-01T16:20:29.000+0100}, title = {Detection of co-orbital planets by combining transit and radial-velocity measurements}, url = {http://arxiv.org/abs/1702.08775}, year = 2017 }