Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations

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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.; Ofir, A.; Dreizler, S.; Agol, E.; Freudenthal, J.; Hernandez, J.; Wedemeyer, S.; Parkash, V.; Deeg, H. J.; Hoyer, S.; Morris, B. M.; Becker, A. C.; Sun, L.; Gu, S. H.; Herrero, E.; Tal-Or, L.; Poppenhaeger, K.; Mallonn, M.; Albrecht, S.; Khalafinejad, S.; Boumis, P.; Delgado-Correal, C.; Fabrycky, D. C.; Janulis, R.; Lalitha, S.; Liakos, A.; Mikolaitis, S.; Moyano D'Angelo, M. L.; Sokov, E.; Pakstiene, E.; Popov, A.; Krushinsky, V.; Ribas, I.; Rodriguez, M. M. S.; Rusov, S.; Sokova, I.; Tautvaisiene, G.; Wang, X.

In: Astronomy & Astrophysics, Vol. 615, 79, 17.07.2018.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

von Essen, C, Ofir, A, Dreizler, S, Agol, E, Freudenthal, J, Hernandez, J, Wedemeyer, S, Parkash, V, Deeg, HJ, Hoyer, S, Morris, BM, Becker, AC, Sun, L, Gu, SH, Herrero, E, Tal-Or, L, Poppenhaeger, K, Mallonn, M, Albrecht, S, Khalafinejad, S, Boumis, P, Delgado-Correal, C, Fabrycky, DC, Janulis, R, Lalitha, S, Liakos, A, Mikolaitis, S, Moyano D'Angelo, ML, Sokov, E, Pakstiene, E, Popov, A, Krushinsky, V, Ribas, I, Rodriguez, MMS, Rusov, S, Sokova, I, Tautvaisiene, G & Wang, X 2018, 'Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations', Astronomy & Astrophysics, vol. 615, 79. https://doi.org/10.1051/0004-6361/201732483

APA

CBE

von Essen C, Ofir A, Dreizler S, Agol E, Freudenthal J, Hernandez J, Wedemeyer S, Parkash V, Deeg HJ, Hoyer S, Morris BM, Becker AC, Sun L, Gu SH, Herrero E, Tal-Or L, Poppenhaeger K, Mallonn M, Albrecht S, Khalafinejad S, Boumis P, Delgado-Correal C, Fabrycky DC, Janulis R, Lalitha S, Liakos A, Mikolaitis S, Moyano D'Angelo ML, Sokov E, Pakstiene E, Popov A, Krushinsky V, Ribas I, Rodriguez MMS, Rusov S, Sokova I, Tautvaisiene G, Wang X. 2018. Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations. Astronomy & Astrophysics. 615. https://doi.org/10.1051/0004-6361/201732483

MLA

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Author

von Essen, C. ; Ofir, A. ; Dreizler, S. ; Agol, E. ; Freudenthal, J. ; Hernandez, J. ; Wedemeyer, S. ; Parkash, V. ; Deeg, H. J. ; Hoyer, S. ; Morris, B. M. ; Becker, A. C. ; Sun, L. ; Gu, S. H. ; Herrero, E. ; Tal-Or, L. ; Poppenhaeger, K. ; Mallonn, M. ; Albrecht, S. ; Khalafinejad, S. ; Boumis, P. ; Delgado-Correal, C. ; Fabrycky, D. C. ; Janulis, R. ; Lalitha, S. ; Liakos, A. ; Mikolaitis, S. ; Moyano D'Angelo, M. L. ; Sokov, E. ; Pakstiene, E. ; Popov, A. ; Krushinsky, V. ; Ribas, I. ; Rodriguez, M. M. S. ; Rusov, S. ; Sokova, I. ; Tautvaisiene, G. ; Wang, X. / Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations. In: Astronomy & Astrophysics. 2018 ; Vol. 615.

Bibtex

@article{d542489c2f3a405c93614250ee53902d,
title = "Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations",
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 KOI1-0410.01, 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- and space-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.",
keywords = "instrumentation: photometers, methods: data analysis, techniques: photometric, planets and satellites: dynamical evolution and stability, PLANETARY SYSTEM, LIGHT CURVES, EXTRASOLAR PLANETS, PARAMETER-ESTIMATION, CCD PHOTOMETRY, MASS, TIME, SERIES, STAR, CONFIRMATION",
author = "{von Essen}, C. and A. Ofir and S. Dreizler and E. Agol and J. Freudenthal and J. Hernandez and S. Wedemeyer and V. Parkash and Deeg, {H. J.} and S. Hoyer and Morris, {B. M.} and Becker, {A. C.} and L. Sun and Gu, {S. H.} and E. Herrero and L. Tal-Or and K. Poppenhaeger and M. Mallonn and S. Albrecht and S. Khalafinejad and P. Boumis and C. Delgado-Correal and Fabrycky, {D. C.} and R. Janulis and S. Lalitha and A. Liakos and S. Mikolaitis and {Moyano D'Angelo}, {M. L.} and E. Sokov and E. Pakstiene and A. Popov and V. Krushinsky and I. Ribas and Rodriguez, {M. M. S.} and S. Rusov and I. Sokova and G. Tautvaisiene and X. Wang",
year = "2018",
month = "7",
day = "17",
doi = "10.1051/0004-6361/201732483",
language = "English",
volume = "615",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - Kepler Object of Interest Network I. First results combining ground- and space-based observations of Kepler systems with transit timing variations

AU - von Essen, C.

AU - Ofir, A.

AU - Dreizler, S.

AU - Agol, E.

AU - Freudenthal, J.

AU - Hernandez, J.

AU - Wedemeyer, S.

AU - Parkash, V.

AU - Deeg, H. J.

AU - Hoyer, S.

AU - Morris, B. M.

AU - Becker, A. C.

AU - Sun, L.

AU - Gu, S. H.

AU - Herrero, E.

AU - Tal-Or, L.

AU - Poppenhaeger, K.

AU - Mallonn, M.

AU - Albrecht, S.

AU - Khalafinejad, S.

AU - Boumis, P.

AU - Delgado-Correal, C.

AU - Fabrycky, D. C.

AU - Janulis, R.

AU - Lalitha, S.

AU - Liakos, A.

AU - Mikolaitis, S.

AU - Moyano D'Angelo, M. L.

AU - Sokov, E.

AU - Pakstiene, E.

AU - Popov, A.

AU - Krushinsky, V.

AU - Ribas, I.

AU - Rodriguez, M. M. S.

AU - Rusov, S.

AU - Sokova, I.

AU - Tautvaisiene, G.

AU - Wang, X.

PY - 2018/7/17

Y1 - 2018/7/17

N2 - 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 KOI1-0410.01, 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- and space-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.

AB - 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 KOI1-0410.01, 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- and space-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.

KW - instrumentation: photometers

KW - methods: data analysis

KW - techniques: photometric

KW - planets and satellites: dynamical evolution and stability

KW - PLANETARY SYSTEM

KW - LIGHT CURVES

KW - EXTRASOLAR PLANETS

KW - PARAMETER-ESTIMATION

KW - CCD PHOTOMETRY

KW - MASS

KW - TIME

KW - SERIES

KW - STAR

KW - CONFIRMATION

U2 - 10.1051/0004-6361/201732483

DO - 10.1051/0004-6361/201732483

M3 - Journal article

VL - 615

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - 79

ER -