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GATE (Gaia Transiting Exoplanets): Detecting Transiting Exoplanets with Gaia

Published online by Cambridge University Press:  27 October 2016

Shay Zucker ,
Laurent Eyer ,
Simon Hodgkin  and
Gisella Clementini
Shay Zucker
Affiliation:
Dept. of Geosciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
Laurent Eyer
Affiliation:
Dept. of Astronomy, University of Geneva, Geneva, Switzerland
Simon Hodgkin
Affiliation:
Institute of Astronomy, Cambridge University, Cambridge, UK
Gisella Clementini
Affiliation:
INAF – Osservatorio Astronomico di Bologna, Bologna, Italy
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Gaia will have a revolutionary impact on most fields of astronomy. However, its scanning law is too sparse for traditional transit detection approaches (de Bruijne 2012). Practically, only stars brighter than 16th magnitude are relevant for follow-up of transiting exoplanets. For those stars, Gaia's precision is of the order of 1 mmag (Eyer et al. 2015). On average, Gaia will have sampled each target 70 times, but certain stars may be observed as many as 200 times (Voss et al. 2013). Hipparcos scanning law was similar, but its precision much worse. Nevertheless the transit of HD209458 could be seen, aposteriori, in Hipparcos' data (Söderhelm 1999). This inspired our GATE initiative.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29A: Astronomy in Focus , August 2015 , pp. 224
Copyright
Copyright © International Astronomical Union 2016 

References

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