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The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation
Harpsoe, KBW1,2; Hardis, S1,2; Hinse, TC3; Jorgensen, G1,2; Mancini, L9,12,17; Southworth, J4; Alsubai, KA8; Bozza, V9,11; Browne, P5; Burgdorf, MJ10; Novati, SC9,12; Dodds, P5; Dominik, M5; Fang XS(房祥松)21; Finet, F15; Gerner, T16; Gu SH(顾盛宏)21; Hundertmark, M5,13; Jessen-Hansen, J20; Kains, N5,14; Kerins, E18; Kjeldsen, H20; Liebig, C5; Lund, MN20; Lundkvist, M20; Mathiasen, M1; Nesvorny, D23; Nikolov, N17; Penny, MT18; Proft, S16; Rahvar, S6,22; Ricci, D15; Sahu, KC19; Scarpetta, G9,11,12; Schafer, S13; Schonebeck, F16; Snodgrass, C7; Skottfelt, J1,2; Surdej, J15; Tregloan-Reed, J5; Wertz, O15
Source PublicationASTRONOMY & ASTROPHYSICS
2013-01
Volume549
DOI10.1051/0004-6361.201219996
Contribution Rank第21完成单位
Indexed BySCI ; EI
KeywordPlanetray Systems Stars: Individual: Gj1214 Methods: Statistical Methods: Observational Techniques: Photometric
Abstract

Aims. We present 11 high-precision photometric transit observations of the transiting super-Earth planet GJ 1214 b. Combining these data with observations from other authors, we investigate the ephemeris for possible signs of transit timing variations (TTVs) using a Bayesian approach. 

Methods. The observations were obtained using telescope-defocusing techinques, and achieve a high precision with random errors in the photometry as low as 1 mmag per point. To investigate the possiblity of TTVs in the light curve, we calculate the overall probability of a TTV signal using Bayesian methods. 

Results. The observations are used to determine the photometric parameters and the physical properties of the GJ 1214 system. Our results are in good agreement with published values. Individual times of mid-transit are measured with uncertainites as low as 10 s, allowing us to reduce the uncertainity in the orbital period by a factor or two. 

Conclusions. A Bayesian analysis reveals that it is highly improbable that the observed transit times is explained by TTV caused by a planet in the nominal habitable zone, when compared with the simpler alternative of a linear ephemeris.

Funding ProjectSTFC ; Communaute francaise de Belgique - Actions de recherche concertees - Academie universitaire Wallonie-Europe ; KASI[2012-1-410-02] ; NPRP grant, Qatar National Research Fund (a member of Qatar Foundation)[NPRP-09-476-1-78]
Funding OrganizationSTFC ; Communaute francaise de Belgique - Actions de recherche concertees - Academie universitaire Wallonie-Europe ; KASI[2012-1-410-02] ; NPRP grant, Qatar National Research Fund (a member of Qatar Foundation)[NPRP-09-476-1-78]
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000313745000010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTRASOLAR PLANETS ; ECLIPSING BINARIES ; GJ 1214B ; PHYSICAL-PROPERTIES ; ADDITIONAL PLANETS ; OPEN CLUSTERS ; MASS ; PHOTOMETRY ; ATMOSPHERE ; EXOPLANETS
EI Accession Number20125015792535
EI KeywordsOrbits
EI Classification Number713.4Pulse Circuits - 921.4Combinatorial Mathematics, Includes Graph Theory, Set Theory - 941.4Optical Variables Measurements
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6797
Collection系外行星研究组
Corresponding AuthorHarpsoe, KBW
Affiliation1.Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen Ø, Denmark
2.Centre for Star and Planet Formation, Natural History Museum of Denmark, Øster Voldgade 5, 1350 Copenhagen, Denmark
3.Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, 305-348 Daejeon, Republic of Korea
4.Astrophysics Group, Keele University, Staffordshire, ST5 5BG, United Kingdom
5.SUPA, University of St Andrews, School of Physics and Astronomy, North Haugh, St-Andrews KY16 9SS, United Kingdom
6.Department of Physics, Sharif University of Technology, PO Box 11155-9161, Tehran, Iran
7.Max-Planck-Institute for Solar System Research, Max-Planck Str. 2, 37191 Katlenburg-Lindau, Germany
8.Qatar Foundation, Doha, Qatar
9.Dipartimento di Fisica e. R. Caianiello, Università di Salerno, via Ponte Don Melillo, 84084 Fisciano (SA), Italy
10.HE Space Operations GmbH, Flughafenallee 24, 28199 Bremen, Germany
11.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
12.Istituto Internazionale per Gli Alti Studi Scientifici (IIASS), 84019 Vietri Sul Mare (SA), Italy
13.Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
14.European Southern Observatory, Karl-Schwarzschild-Straße 2, 85748 Garching bei München, Germany
15.Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium
16.Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany
17.Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
18.Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
19.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
20.Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
21.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, 650011 Kunming, China
22.Perimeter Institute for Theoretical Physics, 31 Caroline St. N., Waterloo ON, N2L 2Y5, Canada
23.Southwest Research Institute, Department of Space Studies, 1050 Walnut St., Boulder, CO 80302, United States
Recommended Citation
GB/T 7714
Harpsoe, KBW,Hardis, S,Hinse, TC,et al. The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation[J]. ASTRONOMY & ASTROPHYSICS,2013,549.
APA Harpsoe, KBW.,Hardis, S.,Hinse, TC.,Jorgensen, G.,Mancini, L.,...&Wertz, O.(2013).The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation.ASTRONOMY & ASTROPHYSICS,549.
MLA Harpsoe, KBW,et al."The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation".ASTRONOMY & ASTROPHYSICS 549(2013).
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