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Kepler object of interest network: I. First results combining ground- and space-based observations of Kepler systems with transit timing variations
Von Essen, C.1,2; Ofir, A.2,3; Dreizler, S.2; Agol, E.4,5,6; Freudenthal, J.2; Hernández, J.7; Wedemeyer, S.8,9; Parkash, V.10; Deeg, H.J.11,12; Hoyer, S.11,12,13; Morris, B.M.4; Becker, A.C.4; Sun LL(孙磊磊)14; Gu SH(顾盛宏)14; Herrero, E.15; Tal-Or, L.2,17; Poppenhaeger, K.18; Mallonn, M.19; Albrecht, S.1; Khalafinejad, S.20; Boumis, P.21; Delgado-Correal, C.22; Fabrycky, D.C.23; ; Janulis, R.24; Lalitha, S.25; Liakos, A.21; Mikolaitis, Š.24; Moyano D'Angelo, M.L.26; Sokov, E.27,28; Pakštienė, E.24; Popov, A.29; Krushinsky, V.29; Ribas, I.16; Rodríguez, M.M.S.7; Rusov, S.27; Sokova, I.27; Tautvaišienė, G.24; Wang XB(王晓彬)14
Source PublicationAstronomy and Astrophysics
2018-07-17
Volume615
DOI10.1051/0004-6361/201732483
Contribution Rank第14完成单位
Indexed BySCI ; EI
KeywordInstrumentation: Photometers Methods: Data Analysis Techniques: Photometric Planets And Satellites: Dynamical Evolution And Stability
Abstract

During its four years of photometric observations, the Kepler space telescope detected thousands of exoplanets and exoplanet candidates. One of Kepler's greatest heritages has been the confirmation and characterization of hundreds of multi-planet systems via transit timing variations (TTVs). However, there are many interesting candidate systems displaying TTVs on such long timescales that the existing Kepler observations are of insufficient length to confirm and characterize them by means of this technique. To continue with Kepler's unique work, we have organized the "Kepler Object of Interest Network" (KOINet), a multi-site network formed of several telescopes located throughout America, Europe, and Asia. The goals of KOINet are to complete the TTV curves of systems where Kepler did not cover the interaction timescales well, to dynamically prove that some candidates are true planets (or not), to dynamically measure the masses and bulk densities of some planets, to find evidence for non-transiting planets in some of the systems, to extend Kepler's baseline adding new data with the main purpose of improving current models of TTVs, and to build a platform that can observe almost anywhere on the northern hemisphere, at almost any time. KOINet has been operational since March 2014. Here we show some promising first results obtained from analyzing seven primary transits of KOI-0410.01, KOI-0525.01, KOI-0760.01, and KOI-0902.01, in addition to the Kepler data acquired during the first and second observing seasons of KOINet. While carefully choosing the targets we set demanding constraints on timing precision (at least 1 min) and photometric precision (as good as one part per thousand) that were achieved by means of our observing strategies and data analysis techniques. For KOI-0410.01, new transit data revealed a turnover of its TTVs. We carried out an in-depth study of the system, which is identified in the NASA Data Validation Report as a false positive. Among others, we investigated a gravitationally bound hierarchical triple star system and a planet-star system. While the simultaneous transit fitting of ground- andspace-based data allowed for a planet solution, we could not fully reject the three-star scenario. New data, already scheduled in the upcoming 2018 observing season, will set tighter constraints on the nature of the system.

Funding ProjectDanish National Research Foundation[DNRF106] ; NASA[NNX13A124G] ; NASA[NNX13AF62G] ; NASA[NNH05ZDA001C] ; National Science Foundation (NSF)[AST-1615315] ; NASA Astrobiology Institutes Virtual Planetary Laboratory ; Research Council of Norway[188910] ; International Space Science Institute (ISSI) in Bern, Switzerland ; German Research Foundation (DFG)[DR 281/30-1] ; Ministry of Education and Science[AAAA-A17-117030310283-7] ; Government of the Russian Federation[02.A03.21.0006] ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Fondo Europeo de Desarrollo Regional (FEDER)[ESP201680435-C2-1-R] ; Generalitat de Catalunya/CERCA programme ; Research Council of Lithuania (LMT)[LAT-08/2016] ; Erasmus Mundus Joint Doctorate Program from the EACEA of the European Commission[2014-0707] ; Russian Science Foundation[14-50-00043] ; Russian Foundation for Basic Research[17-02-00542] ; UK Science and Technology Facilities Council through STFC[ST/P000312/1] ; Spanish Secretary of State for RDi (MINECO)[ESP2015-65712-05-4-R] ; Guggenheim Fellowship
Funding OrganizationDanish National Research Foundation[DNRF106] ; NASA[NNX13A124G, NNX13AF62G, NNH05ZDA001C] ; National Science Foundation (NSF)[AST-1615315] ; NASA Astrobiology Institutes Virtual Planetary Laboratory ; Research Council of Norway[188910] ; International Space Science Institute (ISSI) in Bern, Switzerland ; German Research Foundation (DFG)[DR 281/30-1] ; Ministry of Education and Science[AAAA-A17-117030310283-7] ; Government of the Russian Federation[02.A03.21.0006] ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Fondo Europeo de Desarrollo Regional (FEDER)[ESP201680435-C2-1-R] ; Generalitat de Catalunya/CERCA programme ; Research Council of Lithuania (LMT)[LAT-08/2016] ; Erasmus Mundus Joint Doctorate Program from the EACEA of the European Commission[2014-0707] ; Russian Science Foundation[14-50-00043] ; Russian Foundation for Basic Research[17-02-00542] ; UK Science and Technology Facilities Council through STFC[ST/P000312/1] ; Spanish Secretary of State for RDi (MINECO)[ESP2015-65712-05-4-R] ; Guggenheim Fellowship
Language英语
Subject Area天文学 ; 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
ISSN1432-0746
URL查看原文
WOS IDWOS:000439002800011
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPlanetary System ; Parameter-estimation ; Light Curves ; Mass ; Photometry ; Confirmation ; Integration
EI Accession Number20191106638496
EI KeywordsSatellites
EI Classification Number655.2satellites - 657.2extraterrestrial Physics And Stellar Phenomena - 713.4pulse Circuits - 723.2data Processing And Image Processing - 903.1information Sources And Analysis - 921.6numerical Methods - 941.4optical Variables Measurements
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/19681
Collection系外行星研究组
Corresponding AuthorVon Essen, C.
Affiliation1.Stellar Astrophysics Centre, Ny Munkegade 120, Aarhus, 8000, Denmark
2.Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen, 37077, Germany
3.Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, 76100, Israel
4.Astronomy Department, University of Washington, Seattle; WA, 98195, United States
5.Institut d'Astrophysique de Paris, 98 bis Boulevard Arago, Paris, 75014, France
6.NASA Astrobiology Institute, Virtual Planetary Laboratory Team, Seattle, WA, United States
7.Instituto de Astronomía, UNAM, Campus Ensenada, Carretera Tijuana-Ensenada km 103, Ensenada, 22860, B.C., Mexico
8.Rosseland Centre for Solar Physics, University of Oslo, PO Box 1029 Blindern, Oslo, 0315, Norway
9.Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029 Blindern, Oslo, 0315, Norway
10.School of Physics and Astronomy, Monash Centre for Astrophysics (MoCA), Monash University, Clayton; VIC, 3800, Australia
11.Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, La Laguna, Tenerife, 38205, Spain
12.Universidad de la Laguna, Dept. de Astrofísica, La Laguna, Tenerife, 38206, Spain
13.Aix-Marseille Université, CNRS, LAM, Laboratoire d'Astrophysique de Marseille, Marseille, France
14.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province, 650216, China
15.Institut de Ciéncies de l'Espai (IEEC-CSIC), C/ Can Magrans s/n, Campus UAB, Bellaterra, 08193, Spain
16.Observatori Del Montsec (OAdM), Institut d'Estudis Espacials de Catalunya (IEEC), C/ Gran Capità 2-4, Edif. Nexus, Barcelona, 08034, Spain
17.School of Geosciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
18.Astrophysics Research Centre, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom
19.Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, Potsdam, 14482, Germany
20.Hamburg Observatory, Hamburg University, Gojenbergsweg 112, Hamburg, 21029, Germany
21.Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Metaxa and Vas. Pavlou St., Penteli, Athens, Greece
22.Dipartimento di Fisica e Scienze della Terra, Universitá degli Studi di Ferrara, via Saragat 1, Ferrara, 44122, Italy
23.Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, 60637, United States
24.Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio 3, Vilnius, 10257, Lithuania
25.Indian Institute of Astrophysics, Koramangala II block, Bangalore, 560034, India
26.Instituto de Astronomía, Universidad Católica Del Norte, Av. Angamos, Antofagasta, 0610, Chile
27.Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse d. 65, St. Petersburg, 196140, Russia
28.Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz, 369167, Russia
29.Kourovka Astronomical Observatory of Ural Federal University, Mira Str. 19, Yekaterinburg, 620002, Russia
Recommended Citation
GB/T 7714
Von Essen, C.,Ofir, A.,Dreizler, S.,et al. Kepler object of interest network: I. First results combining ground- and space-based observations of Kepler systems with transit timing variations[J]. Astronomy and Astrophysics,2018,615.
APA Von Essen, C..,Ofir, A..,Dreizler, S..,Agol, E..,Freudenthal, J..,...&Wang XB.(2018).Kepler object of interest network: I. First results combining ground- and space-based observations of Kepler systems with transit timing variations.Astronomy and Astrophysics,615.
MLA Von Essen, C.,et al."Kepler object of interest network: I. First results combining ground- and space-based observations of Kepler systems with transit timing variations".Astronomy and Astrophysics 615(2018).
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