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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Ground-based photometry of space-based transit detections: Photometric follow-up of the CoRoT mission
Astronomy and Astrophysics, Volume 506, No. 1, Year 2009
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Description
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. © 2009 ESO.
Authors & Co-Authors
Deeg, Hans J.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Gillon, Michaël
Switzerland, Geneva
Université de Genève
Belgium, Liege
Université de Liège
Shporer, Avi
Israel, Tel Aviv-yafo
Tel Aviv University
Rouan, Daniel
France, Paris
L'observatoire de Paris
Stecklum, Bringfried
Unknown Affiliation
Aigrain, Suzanne
United Kingdom, Exeter
University of Exeter
Almenara, José Manuel
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Alonso, Roi
France, Marseille
Laboratoire D'astrophysique de Marseille
Barbieri, Mauro
France, Marseille
Laboratoire D'astrophysique de Marseille
Bouchy, François
France, Paris
Sorbonne Université
Eislöffel, Jochen
Unknown Affiliation
Erikson, Anders R.
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Fridlund, Malcolm C.V.
Netherlands, Noordwijk Aan Zee
Estec - European Space Research and Technology Centre
Eigmüller, Philipp
Unknown Affiliation
Handler, Gerald
Austria, Vienna
Universität Wien
Hatzes, Artie P.
Unknown Affiliation
Kabáth, Petr
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Lendl, Monika A.
Austria, Vienna
Universität Wien
Mazeh, Tsevi
Israel, Tel Aviv-yafo
Tel Aviv University
Moutou, Claire
France, Marseille
Laboratoire D'astrophysique de Marseille
Queloz, Didier P.
Switzerland, Geneva
Université de Genève
Rauer, Heike
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Germany, Berlin
Technische Universität Berlin
Rabus, Markus
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Statistics
Citations: 74
Authors: 23
Affiliations: 12
Identifiers
Doi:
10.1051/0004-6361/200912011
ISSN:
00046361
Research Areas
Health System And Policy
Study Design
Cohort Study