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Transit timing analysis of CoRoT-Exo-1b

Csizmadia, Szilard and Renner, Stefan and Barge, P and Agol, E and Aigrain, S and Alonso, R and Almenara, J and Bonomo, A and Bordé, P and Bouchy, F and Cabrera, Juan and Deeg, H and De La Reza, R and Deleuil, M and Dvorak, R and Erikson, A. and Guenther, E. and Fridlund, M and Gondoin, P and Guillot, T and Hatzes, A. and Jorda, L and Lammer, H and Lazaro, C and Léger, A and Llebaria, A and Magain, P and Moutou, C and Ollivier, M and Pätzold, M and Queloz, D and Rauer, Heike and Rouan, D and Schneider, J. and Wuchterl, G and Gandolfi, D (2010) Transit timing analysis of CoRoT-Exo-1b. Astronomy and Astrophysics, 510, A94. EDP Sciences. DOI: 10.1051/0004-6361/200912052 ISSN 0004-6361

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Abstract

Context. CoRoT, the pioneer space-based transit search, steadily provides thousands of high-precision light curves with continuous time sampling over periods of up to 5 months. The transits of a planet perturbed by an additional object are not strictly periodic. By studying the transit timing variations (TTVs), additional objects can be detected in the system. Aims. A transit timing analysis of CoRoT-1b is carried out to constrain the existence of additional planets in the system.
 Methods. We used data obtained by an improved version of the CoRoT data pipeline (version 2.0). Individual transits were fitted to determine the mid-transit times, and we analyzed the derived O–C diagram. N-body integrations were used to place limits on secondary planets. Results. No periodic timing variations with a period shorter than the observational window (55 days) are found. The presence of an Earth-mass Trojan is not likely. A planet of mass greater than ~1 Earth mass can be ruled out by the present data if the object is in a 2:1 (exterior) mean motion resonance with CoRoT-1b. Considering initially circular orbits: (i) super-Earths (less than 10 Earth-masses) are excluded for periods less than about 3.5 days; (ii) Saturn-like planets can be ruled out for periods less than about 5 days; (iii) Jupiter-like planets should have a minimum orbital period of about 6.5 days.

Item URL in elib:https://elib.dlr.de/64177/
Document Type:Article
Title:Transit timing analysis of CoRoT-Exo-1b
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Csizmadia, SzilardUNSPECIFIEDUNSPECIFIED
Renner, StefanInstitut de Mécanique Céleste et de Calcul de Éphémérides, Paris, France; Laboratoire d'Astronomie de Lille, Université Lille, France UNSPECIFIED
Barge, PLAM, MarseilleUNSPECIFIED
Agol, EDepartment of Astronomy, University of Washington, SeattleUNSPECIFIED
Aigrain, SUniversity of ExeterUNSPECIFIED
Alonso, RLAM, MarseilleUNSPECIFIED
Almenara, JInstituto de Astrofisica de CanariasUNSPECIFIED
Bonomo, ALAM, MarseilleUNSPECIFIED
Bordé, PInstitut d'Astrophysique Spatiale, Université Paris, OrsayUNSPECIFIED
Bouchy, FIAP, ParisUNSPECIFIED
Cabrera, JuanUNSPECIFIEDUNSPECIFIED
Deeg, HInstituto de Astrofisica de CanariasUNSPECIFIED
De La Reza, RObservatorio Nacional Rio de JaneiroUNSPECIFIED
Deleuil, MLAM, MarseilleUNSPECIFIED
Dvorak, RUniversität WienUNSPECIFIED
Erikson, A.UNSPECIFIEDUNSPECIFIED
Guenther, E.Thüringer Landessternwarte TautenburgUNSPECIFIED
Fridlund, MESTECUNSPECIFIED
Gondoin, PESTECUNSPECIFIED
Guillot, TObservatoire de la Cote d'AzurUNSPECIFIED
Hatzes, A.Thüringer Landessternwarte TautenburgUNSPECIFIED
Jorda, LLAM, MarseilleUNSPECIFIED
Lammer, HÖsterreichische Akademie der WissenschaftenUNSPECIFIED
Lazaro, CInstitut d'Astrophysique de Paris, Université Pierre & Marie Curie, ParisUNSPECIFIED
Léger, AIAS, ParisUNSPECIFIED
Llebaria, ALAM, MarseilleUNSPECIFIED
Magain, PUniversité de LiègeUNSPECIFIED
Moutou, CLAM, MarseilleUNSPECIFIED
Ollivier, MIAS, ParisUNSPECIFIED
Pätzold, MUniversität KölnUNSPECIFIED
Queloz, DObservatoire de GeneveUNSPECIFIED
Rauer, HeikeUNSPECIFIEDUNSPECIFIED
Rouan, DLESIA, ParisUNSPECIFIED
Schneider, J.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Wuchterl, GThüringer LandessternwarteUNSPECIFIED
Gandolfi, DThüringer LandessternwarteUNSPECIFIED
Date:2010
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:510
DOI :10.1051/0004-6361/200912052
Page Range:A94
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:planetary systems, photometric techniques, numerical methods, occultations
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Extrasolare Planeten (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Stock, Joachim Wolfgang
Deposited On:10 Aug 2010 12:08
Last Modified:08 Mar 2018 18:54

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