Bibcode
Deeg, H. J.; Gillon, M.; Shporer, A.; Rouan, D.; Stecklum, B.; Aigrain, S.; Alapini, A.; Almenara, J. M.; Alonso, R.; Barbieri, M.; Bouchy, F.; Eislöffel, J.; Erikson, A.; Fridlund, M.; Eigmüller, P.; Handler, G.; Hatzes, A.; Kabath, P.; Lendl, M.; Mazeh, T.; Moutou, C.; Queloz, D.; Rauer, H.; Rabus, M.; Tingley, B.; Titz, R.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 506, Issue 1, 2009, pp.343-352
Fecha de publicación:
10
2009
Revista
Número de citas
80
Número de citas referidas
67
Descripción
The motivation, techniques and performance of the ground-based
photometric follow-up of transit detections by the CoRoT space mission
are presented. Its principal raison d'être arises from the much
higher spatial resolution of common ground-based telescopes in
comparison to CoRoT's cameras. This allows the identification of many
transit candidates as arising from eclipsing binaries that are
contaminating CoRoT's lightcurves, even in low-amplitude transit events
that cannot be detected with ground-based obervations. For the ground
observations, “on” - “off” photometry is now
largely employed, in which only a short timeseries during a transit and
a section outside a transit is observed and compared photometrically.
CoRoTplanet candidates' transits are being observed by a dedicated team
with access to telescopes with sizes ranging from 0.2 to 2 m. As an
example, the process that led to the rejection of contaminating
eclipsing binaries near the host star of the Super-Earth planet CoRoT-7b
is shown. Experiences and techniques from this work may also be useful
for other transit-detection experiments, when the discovery instrument
obtains data with a relatively low angular resolution.
The CoRoT space mission, launched on December 27th 2006, has been
developed and is operated by CNES, with the contribution of Austria,
Belgium, Brasil, ESA (RSSD and Science Program), Germany and Spain.
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