ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Creators
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Kokori, A.1
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Tsiaras, A.1, 2
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Edwards, B.1, 3
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Jones, A. W.4
- Pantelidou, G.5
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Tinetti, G.1
- Bewersdorff, L.
- Iliadou, A.5
- Jongen, Y.
- Lekkas, G.6
- Nastasi, A.7
- Poultourtzidis, E.5
- Sidiropoulos, C.6
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Walter, F.
- Wünsche, A.
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Abraham, R. G.
- Agnihotri, V. K.
- Albanesi, R.
- Arce-Mansego, E.
- Arnot, D.8
- Audejean, M.
- Aumasson, C.
- Bachschmidt, M.
- Baj, G.
- Barroy, P. R.9
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Belinski, A. A.10
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Bennett, D.4
- Benni, P.
- Bernacki, K.11
- Betti, L.12, 13
- Biagini, A.13, 14
- Bosch, P.
- Brandebourg, P.
- Brát, L.
- Bretton, M.
- Brincat, S. M.15
- Brouillard, S.
- Bruzas, A.8
- Bruzzone, A.
- Buckland, R. A.4, 8
- Caló, M.
- Campos, F.
- Carreño, A.
- Carrion Rodrigo, J. A.
- Casali, R.
- Casalnuovo, G.
- Cataneo, M.
- Chang, C.-M.16
- Changeat, L.
- Chowdhury, V.
- Ciantini, R.12, 13
- Cilluffo, M.
- Coliac, J.-F.
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Conzo, G.
- Correa, M.
- Coulon, G.
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Crouzet, N.17, 18
- Crow, M. V.4
- Curtis, I. A.
- Daniel, D.
- Dauchet, B.
- Dawes, S.4
- Deldem, M.
- Deligeorgopoulos, D.
- Dransfield, G.19
- Dymock, R.4
- Eenmäe, T.20
- Esseiva, N.
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Evans, P.21
- Falco, C.
- Farfán, R. G.
- Fernández-Lajús, E.22
- Ferratfiat, S.
- Ferreira, S. L.
- Ferretti, A.
- Fiołka, J.11
- Fowler, M.4
- Futcher, S. R.4
- Gabellini, D.
- Gainey, T.
- Gaitan, J.
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Gajdoš, P.23
- García-Sánchez, A.
- Garlitz, J.
- Gillier, C.
- Gison, C.8
- Gonzales, J.
- Gorshanov, D.24
- Grau Horta, F.
- Grivas, G.5
- Guerra, P.
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Guillot, T.25, 26
- Haswell, C. A.8
- Haymes, T.4
- Hentunen, V.-P.27
- Hills, K.4, 28
- Hose, K.
- Humbert, T.
- Hurter, F.
- Hynek, T.
- Irzyk, M.
- Jacobsen, J.
- Jannetta, A. L.
- Johnson, K.
- Jóźwik-Wabik, P.11
- Kaeouach, A. E.
- Kang, W.
- Kiiskinen, H.
- Kim, T.29
- Kivila, Ü.30
- Koch, B.
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Kolb, U.8
- Kučáková, H.31
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Lai, S.-P.16
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Laloum, D.15
- Lasota, S.11
- Lewis, L. A.8
- Liakos, G.-I.
- Libotte, F.
- Lomoz, F.
- Lopresti, C.
- Majewski, R.
- Malcher, A.11
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Mallonn, M.32
- Mannucci, M.
- Marchini, A.33
- Mari, J.-M.
- Marino, A.
- Marino, G.
- Mario, J.-C.
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Marquette, J.-B.34
- Martínez-Bravo, F. A.
- Mašek, M.35
- Matassa, P.
- Michel, P.
- Michelet, J.
- Miller, M.4, 15
- Miny, E.
- Molina, D.
- Mollier, T.
- Monteleone, B.
- Montigiani, N.
- Morales-Aimar, M.15
- Mortari, F.
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Morvan, M.1
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Mugnai, L. V.7, 36
- Murawski, G.
- Naponiello, L.12, 13
- Naudin, J.-L.
- Naves, R.
- Néel, D.
- Neito, R.20
- Neveu, S.
- Noschese, A.
- Öğmen, Y.
- Ohshima, O.
- Orbanic, Z.
- Pace, E. P.12, 13
- Pantacchini, C.
- Paschalis, N. I.
- Pereira, C.37
- Peretto, I.
- Perroud, V.
- Phillips, M.4
- Pintr, P.
- Pioppa, J.-B.15
- Plazas, J.
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Poelarends, A. J.38
- Popowicz, A.11
- Purcell, J.
- Quinn, N.4
- Raetz, M.39
- Rees, D.
- Regembal, F.
- Rocchetto, M.1
- Rocci, P.-F.15
- Rockenbauer, M.40
- Roth, R.41
- Rousselot, L.
- Rubia, X.
- Ruocco, N.
- Russo, E.
- Salisbury, M.4
- Salvaggio, F.
- Santos, A.
- Savage, J.4
- Scaggiante, F.
- Sedita, D.
- Shadick, S.42
- Silva, A. F.
- Sioulas, N.
- Školník, V.
- Smith, M.
- Smolka, M.
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Solmaz, A.43, 44
- Stanbury, N.
- Stouraitis, D.
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Tan, T.-G.
- Theusner, M.
- Thurston, G.4
- Tifner, F. P.
- Tomacelli, A.
- Tomatis, A.
- Trnka, J.
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Tylšar, M.
- Valeau, P.
- Vignes, J.-P.
- Villa, A.
- Vives Sureda, A.
- Vora, K.
- Vrašt'ák, M.
- Walliang, D.
- Wenzel, B.39, 40
- Wright, D. E.4
- Zambelli, R.
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Zhang, M.45
- Zíbar, M.
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1.
University College London
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2.
Arcetri Astrophysical Observatory
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3.
Astrophysique, Instrumentation et Modélisation
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4.
British Astronomical Association
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5.
Aristotle University of Thessaloniki
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6.
University of Ioannina
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7.
Osservatorio Astronomico di Palermo
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8.
The Open University
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9.
University of Picardie Jules Verne
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10.
Lomonosov Moscow State University
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11.
Silesian University of Technology
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12.
University of Florence
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13.
Chianti Multifunctional Observatory
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14.
University of Palermo
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15.
American Association of Variable Star Observers
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16.
National Tsing Hua University
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17.
Leiden University
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18.
European Space Research and Technology Centre
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19.
University of Birmingham
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20.
Tartu Observatory
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21.
Obstech (Chile)
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22.
National University of La Plata
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23.
University of Pavol Jozef Šafárik
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24.
Pulkovo Observatory
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25.
Observatoire de la Côte d'Azur
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26.
Lagrange Laboratory
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27.
Taurus Hill Observatory
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28.
Royal Astronomical Society
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29.
Chungbuk National University
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30.
Science Centre AHHAA
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31.
Silesian University in Opava
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32.
Leibniz Institute for Astrophysics Potsdam
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33.
University of Siena
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34.
Laboratory of Astrophysics of Bordeaux
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35.
Institute of Physics
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36.
Sapienza University of Rome
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37.
University of Lisbon
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38.
Wheaton College - Illinois
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39.
Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne
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40.
University of Vienna
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41.
TU Darmstadt
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42.
University of Saskatchewan
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43.
Çağ University
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44.
Cukurova University
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45.
California Institute of Technology
Abstract
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ephemerides. This work presents a homogenous catalog of updated ephemerides for 450 planets, generated by the integration of ∼18,000 data points from multiple sources. These sources include observations from ground-based telescopes (the ExoClock network and the Exoplanet Transit Database), midtime values from the literature, and light curves from space telescopes (Kepler, K2, and TESS). With all the above, we manage to collect observations for half of the postdiscovery years (median), with data that have a median uncertainty less than 1 minute. In comparison with the literature, the ephemerides generated by the project are more precise and less biased. More than 40% of the initial literature ephemerides had to be updated to reach the goals of the project, as they were either of low precision or drifting. Moreover, the integrated approach of the project enables both the monitoring of the majority of the Ariel candidates (95%), and also the identification of missing data. These results highlight the need for continuous monitoring to increase the observing coverage of the candidate planets. Finally, the extended observing coverage of planets allows us to detect trends (transit-timing variations) for a sample of 19 planets. All the products, data, and codes used in this work are open and accessible to the wider scientific community.
Additional Information
© 2023. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. All the data products and their descriptions can found through the OSF repository: 10.17605/OSF.IO/P298N. The ExoClock project has received funding from the UKSA/STFC grants ST/W00254X/1 and ST/W006960/1. This work has made use of data collected with the TESS mission, obtained from the MAST data archive at the Space Telescope Science Institute (STScI). Funding for the TESS mission is provided by the NASA Explorer Program. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. We would like to acknowledge the support provided by the administrators, designers, and developers of the ETD project and of the Czech Astronomical Society, both for the ExoClock project as well as for the efforts of the whole amateur community through its 10+ yr of operation. This work has made use of observations made by the MicroObservatory, which is maintained and operated as an educational service by the Center for Astrophysics, Harvard & Smithsonian, as a project of NASA's Universe of Learning, supported by NASA Award No. NNX16AC65A. This work has made use of observations made by the LCOGT network, as part of the LCOGT Global Sky Partners project "ORBYTS: Refining Exoplanet Ephemerides" (PI: B. Edwards). ASTEP has benefited from the support of the French and Italian polar agencies IPEV and PNRA, and from INSU, the European Space Agency (ESA), through the Science Faculty of the European Space Research and Technology Center (ESTEC), the University of Birmingham, the European Union's Horizon 2020 research and innovation program (grant agreement No. 803193/BEBOP), the Science and Technology Facilities Council (STFC; grant No. ST/S00193X/1), the Laboratoire Lagrange (CNRS UMR 7293), and the Université Côte d'Azur, through Idex UCAJEDI (ANR-15-IDEX-01). Members from the Silesian University of Technology were responsible for (1) the planning of observations; (2) the automation of the work in observatories; and (3) the processing of the data from the SUTO network. P.J.W. acknowledges support from grants BKM-574/RAu-11/2022 and 32/014/SDU/10-22-20. Other authors from the Silesian University of Technology acknowledge grant BK-246/RAu-11/2022. A.A.B. is supported by the Ministry of Science and Higher Education of the Russian Federation under the grant 075-15-2020-780 (N13.1902.21.0039). M. Cataneo, E.R., and M. Cilluffo thank the City Council and Management of Cernusco sul Naviglio for supporting the activity of the Associazione Cernuschese Astrofili and for the construction of the public observatory "G. Barletta." B.E. is a Laureate of the Paris Region fellowship program, supported by the Ile-de-France Region. This project has received funding under the Horizon 2020 framework program for research and innovation, under the Marie Sklodowska-Curie grant agreement No. 607 945298. P. Gajdoš is supported by the Slovak Research and Development Agency, under contract No. APVV-20-0148 and internal grant VVGS-PF-2021-2087 of the Faculty of Science, P. J. Šafárik University in Košice. C.A.H. and U. Kolb are supported by STFC, under grant ST/T000295/1. M. Mašek is supported by MEYS (Czech Republic), under the project MEYS LTT17006. L.V.M. is funded by ASI grant No. 2021-5-HH.0. Software: Django, PyLightcurve (Tsiaras et al. 2016), ExoTETHyS (Morello et al. 2020), Astropy (Astropy Collaboration et al. 2013), emcee (Foreman-Mackey et al. 2013), Matplotlib (Hunter 2007), Numpy (Harris et al. 2020), SciPy (Virtanen et al. 2020).Attached Files
Published - Kokori_2023_ApJS_265_4.pdf
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Kokori_2023_ApJS_265_4.pdf
Additional details
Identifiers
- Eprint ID
- 121694
- Resolver ID
- CaltechAUTHORS:20230602-251849000.40
Funding
- Science and Technology Facilities Council (STFC)
- ST/W00254X/1
- Science and Technology Facilities Council (STFC)
- ST/W006960/1
- NASA
- 5-26555
- NASA
- NNX16AC65A
- Programma Nazionale di Ricerche in Antartide (PNRA)
- Polar Institute Paul-Émile Victor (IPEV)
- Institut national des sciences de l'Univers (INSU)
- European Space Agency (ESA)
- European Space Research and Technology Center
- University of Birmingham
- European Research Council (ERC)
- 803193
- Science and Technology Facilities Council (STFC)
- ST/S00193X/1
- Centre National de la Recherche Scientifique (CNRS)
- CNRS UMR 7293
- Agence Nationale pour la Recherche (ANR)
- ANR-15-IDEX-01
- Silesian University of Technology
- BKM-574/RAu-11/2022
- Silesian University of Technology
- 32/014/SDU/10-22-20
- Silesian University of Technology
- BK-246/RAu-11/2022
- Ministry of Science and Higher Education of the Russian Federation
- 075-15-2020-780
- Cernusco sul Naviglio
- Île-de-France Region
- Marie Curie Fellowship
- 945298
- Slovak Research and Development Agency
- APVV-20-0148
- P. J. Šafárik University
- VVGS-PF-2021-2087
- Science and Technology Facilities Council (STFC)
- ST/T000295/1
- Ministry of Education, Youth and Sports (Czech Republic)
- MEYS LTT17006
- Agenzia Spaziale Italiana (ASI)
- 2021-5-HH.0
Dates
- Created
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2023-06-05Created from EPrint's datestamp field
- Updated
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2023-06-05Created from EPrint's last_modified field