Bibcode
Deleuil, M.; Aigrain, S.; Moutou, C.; Cabrera, J.; Bouchy, F.; Deeg, H. J.; Almenara, J.-M.; Hébrard, G.; Santerne, A.; Alonso, R.; Bonomo, A. S.; Bordé, P.; Csizmadia, Sz.; Dìaz, R. F.; Erikson, A.; Fridlund, M.; Gandolfi, D.; Guenther, E.; Guillot, T.; Guterman, P.; Grziwa, S.; Hatzes, A.; Léger, A.; Mazeh, T.; Ofir, A.; Ollivier, M.; Pätzold, M.; Parviainen, H.; Rauer, H.; Rouan, D.; Schneider, J.; Titz-Weider, R.; Tingley, B.; Weingrill, J.
Bibliographical reference
Astronomy and Astrophysics, Volume 619, id.A97, 25 pp.
Advertised on:
11
2018
Journal
Citations
38
Refereed citations
30
Description
The CoRoT space mission observed 163 665 stars over 26 stellar fields in
the faint star channel. The exoplanet teams detected a total of 4123
transit-like features in the 177 454 light curves. We present the
complete re-analysis of all these detections carried out with the same
softwares so that to ensure their homogeneous analysis. Although the
vetting process involves some human evaluation, it also involves a
simple binary flag system over basic tests: detection significance,
presence of a secondary, difference between odd and even depths, colour
dependence, V-shape transit, and duration of the transit. We also
gathered the information from the large accompanying ground-based
programme carried out on the planet candidates and checked how useful
the flag system could have been at the vetting stage of the candidates.
From the initial list of transit-like features, we identified and
separated 824 false alarms of various kind, 2269 eclipsing binaries
among which 616 are contact binaries and 1653 are detached ones, 37
planets and brown dwarfs, and 557 planet candidates. We provide the
catalogue of all these transit-like features, including false alarms.
For the planet candidates, the catalogue gives not only their transit
parameters but also the products of their light curve modelling: reduced
radius, reduced semi-major axis, and impact parameter, together with a
summary of the outcome of follow-up observations when carried out and
their current status. For the detached eclipsing binaries, the catalogue
provides, in addition to their transit parameters, a simple visual
classification. Among the planet candidates whose nature remains
unresolved, we estimate that eight (within an error of three) planets
are still to be identified. After correcting for geometric and
sensitivity biases, we derived planet and brown dwarf occurrences and
confirm disagreements with Kepler estimates, as previously reported by
other authors from the analysis of the first runs: small-size planets
with orbital period less than ten days are underabundant by a factor of
three in the CoRoT fields whereas giant planets are overabundant by a
factor of two. These preliminary results would however deserve further
investigations using the recently released CoRoT light curves that are
corrected of the various instrumental effects and a homogeneous analysis
of the stellar populations observed by the two missions.
The CoRoT space mission, launched on December 27th 2006, has been
developed and is operated by CNES, with the contribution of Austria,
Belgium, Brazil, ESA (RSSD and Science Programme), Germany and
Spain.Full Tables A.1, A.2, A.4-A.6 are only available at the CDS via
anonymous ftp to http://cdsarc.u-strasbg.fr
(ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/619/A97
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