Imperial College London
Dr Yvonne Unruh

DrYvonneUnruh

Faculty of Natural Sciences, Department of Physics

Reader in Astrophysics
 
 
 
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Contact

 

y.unruh Website

 
 
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Location

 

1114Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Haywood:2014:10.1017/S147355041300044X,
author = {Haywood, RD and Cameron, AC and Queloz, D and Barros, SCC and Deleuil, M and Fares, R and Gillon, M and Hatzes, A and Lanza, AF and Lovis, C and Moutou, C and Pepe, F and Pollacco, D and Santerne, A and Segransan, D and Unruh, Y},
doi = {10.1017/S147355041300044X},
journal = {International Journal of Astrobiology},
pages = {155--157},
title = {Disentangling planetary orbits from stellar activity in radial-velocity surveys},
url = {http://dx.doi.org/10.1017/S147355041300044X},
volume = {13},
year = {2014}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The majority of extra-solar planets have been discovered (or confirmed after follow-up) through radial-velocity (RV) surveys. Using ground-based spectrographs such as High Accuracy Radial Velocity Planetary Search (HARPS) and HARPS-North, it is now possible to detect planets that are only a few times the mass of the Earth. However, the presence of dark spots on the stellar surface produces RV signals that are very similar in amplitude to those caused by orbiting low-mass planets. Disentangling these signals has thus become the biggest challenge in the detection of Earth-mass planets using RV surveys. To do so, we use the star's lightcurve to model the RV variations produced by spots. Here we present this method and show the results of its application to CoRoT-7.
AU  - Haywood,RD
AU  - Cameron,AC
AU  - Queloz,D
AU  - Barros,SCC
AU  - Deleuil,M
AU  - Fares,R
AU  - Gillon,M
AU  - Hatzes,A
AU  - Lanza,AF
AU  - Lovis,C
AU  - Moutou,C
AU  - Pepe,F
AU  - Pollacco,D
AU  - Santerne,A
AU  - Segransan,D
AU  - Unruh,Y
DO  - 10.1017/S147355041300044X
EP  - 157
PY  - 2014///
SN  - 1475-3006
SP  - 155
TI  - Disentangling planetary orbits from stellar activity in radial-velocity surveys
T2  - International Journal of Astrobiology
UR  - http://dx.doi.org/10.1017/S147355041300044X
UR  - http://hdl.handle.net/10044/1/29067
VL  - 13
ER  -
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