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ExoClock Project. II. A Large-scale Integrated Study with 180 Updated Exoplanet Ephemerides
Indexado
WoS WOS:000753167800001
Scopus SCOPUS_ID:85125866218
DOI 10.3847/1538-4365/AC3A10
Año 2022
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



The ExoClock project is an inclusive, integrated, and interactive platform that was developed to monitor the ephemerides of the Ariel targets to increase the mission efficiency. The project makes the best use of all available resources, i.e., observations from ground telescopes, midtime values from the literature, and finally, observations from space instruments. Currently, the ExoClock network includes 280 participants with telescopes capable of observing 85% of the currently known Ariel candidate targets. This work includes the results of similar to 1600 observations obtained up to 2020 December 31 from the ExoClock network. These data in combination with similar to 2350 midtime values collected from the literature are used to update the ephemerides of 180 planets. The analysis shows that 40% of the updated ephemerides will have an impact on future scheduling as either they have a significantly improved precision or they have revealed biases in the old ephemerides. With the new observations, the observing coverage and rate for half of the planets in the sample has been doubled or more. Finally, from a population perspective, we identify that the differences in the 2028 predictions between the old and the new ephemerides have an STD that is double what is expected from Gaussian uncertainties. These findings have implications for planning future observations, where we will need to account for drifts potentially greater than the prediction uncertainties. The updated ephemerides are open and accessible to the wider exoplanet community both from our Open Science Framework repository and our website.

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
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SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Kokori, A. Mujer UCL - Reino Unido
University College London - Reino Unido
2 Tsiaras, Angelos Hombre UCL - Reino Unido
Istituto Nazionale di Astrofisica - Italia
University College London - Reino Unido
Osservatorio Astrofisico Di Arcetri - Italia
INAF Osservatorio Astrofis Arcetri - Italia
3 Edwards, Billy Hombre UCL - Reino Unido
UNIV PARIS - Francia
University College London - Reino Unido
Universite Paris-Saclay - Francia
4 Rocchetto, Marco Hombre UCL - Reino Unido
University College London - Reino Unido
5 Tinetti, Giovanna Mujer UCL - Reino Unido
University College London - Reino Unido
6 Bewersdorff, L. -
7 Jongen, Y. Hombre Ctr Equestre Palis - Francia
Près du Centre Equestre Au Palis - Francia
8 Lekkas, G. Hombre Univ Ioannina - Grecia
University of Ioannina - Grecia
9 Pantelidou, G. - Aristotle Univ Thessaloniki - Grecia
Aristotle University of Thessaloniki - Grecia
10 Poultourtzidis, E. - Aristotle Univ Thessaloniki - Grecia
Aristotle University of Thessaloniki - Grecia
11 Wunsche, Anael - Observ Baronnies Prov - Francia
Baronnies Provençales Observatory - Francia
Observatoire des Baronnies Provençales - Francia
12 Aggelis, C. - Hellen Amateur Astron Assoc - Grecia
Hellenic Amateur Astronomy Association - Grecia
13 Agnihotri, Vikrant Kumar -
14 Arena, C. - Grp Astrofili Catanesi - Italia
Gruppo Astrofili Catanesi - Italia
15 Bachschmidt, Matthieu Hombre
16 Bennett, David P. Hombre Bristol Astron Soc - Reino Unido
British Astron Assoc - Reino Unido
Bristol Astronomical Society - Reino Unido
British Astronomical Association - Reino Unido
Basingstoke Astronomical Society - Reino Unido
17 Benni, Paul Hombre
18 Bernacki, Krzysztof Hombre Silesian Tech Univ - Polonia
Silesian University of Technology - Polonia
19 Besson, E. -
20 Betti, L. - Univ Firenze - Italia
Osservatorio Polifunz Chianti - Italia
Università degli Studi di Firenze - Italia
Osservatorio Polifunzionale del Chianti - Italia
21 Biagini, A. - Osservatorio Polifunz Chianti - Italia
Univ Palermo - Italia
GAL Hassin Ctr Int Sci Astron - Italia
Osservatorio Polifunzionale del Chianti - Italia
Università degli Studi di Palermo - Italia
GAL Hassin - Centro Internazionale per le Scienze Astronomiche - Italia
22 Brandebourg, P. -
23 Bretton, M. Hombre Observ Baronnies Prov - Francia
Baronnies Provençales Observatory - Francia
Observatoire des Baronnies Provençales - Francia
24 Brincat, Stephen M. Hombre AAVSO - Estados Unidos
American Association of Variable Star Observers - Estados Unidos
25 Calo, Mauro Hombre
26 Campos, F. -
27 Casali, Roland Hombre
28 Ciantini, R. - Univ Firenze - Italia
Osservatorio Polifunz Chianti - Italia
Università degli Studi di Firenze - Italia
Osservatorio Polifunzionale del Chianti - Italia
29 Crow, M. - British Astron Assoc - Reino Unido
Crayford Manor House Astron Soc Dartford - Reino Unido
British Astronomical Association - Reino Unido
Parsonage Lane Pavilion - Reino Unido
30 Dauchet, B. - Astroqueyras Astron Soc - Francia
Astroqueyras Astronomical Society - Francia
31 Dawes, S. Hombre British Astron Assoc - Reino Unido
Crayford Manor House Astron Soc Dartford - Reino Unido
British Astronomical Association - Reino Unido
Parsonage Lane Pavilion - Reino Unido
32 Deldem, Marc Hombre
33 Deligeorgopoulos, Dimitrios Hombre
34 Dymock, R. Hombre British Astron Assoc - Reino Unido
British Astronomical Association - Reino Unido
35 Eenmäe, T. - Tartu Observ - Estonia
Tartu Observatoorium - Estonia
36 Evans, Phil Hombre Sauce Observ - Chile
El Sauce Observatory - Chile
37 Esseiva, N. -
38 Falco, C. Hombre GAL Hassin Ctr Int Sci Astron - Italia
GAL Hassin - Centro Internazionale per le Scienze Astronomiche - Italia
39 Ferratfiat, Stephane - Observ Baronnies Prov - Francia
Baronnies Provençales Observatory - Francia
Observatoire des Baronnies Provençales - Francia
40 Fowler, Martin J. F. Hombre British Astron Assoc - Reino Unido
South Wonston Exoplanet Factory - Reino Unido
British Astronomical Association - Reino Unido
41 Futcher, S. R. - British Astron Assoc - Reino Unido
Hampshire Astron Grp - Reino Unido
British Astronomical Association - Reino Unido
Hampshire Astronomical Group - Reino Unido
42 Gaitan, J. -
43 Grau Horta, Ferran Hombre
44 Guerra, P. Hombre Observ Astron Albanya - España
Observatori Astronòmic Albanyà - España
45 Hurter, F. -
46 Jones, A. Hombre British Astron Assoc - Reino Unido
British Astronomical Association - Reino Unido
47 Kang, W. - Natl Youth Space Ctr - Corea del Sur
48 Kiiskinen, H. -
49 Kim, Taewoo - Natl Youth Space Ctr - Corea del Sur
Chungbuk Natl Univ - Corea del Sur
50 Laloum, D. Hombre Soc Astron France - Francia
Société Astronomique de France - Francia
51 Lee, R. -
52 Lomoz, Frantisek - Hvezdarna Sedlcany - República Checa
Czech Astron Soc - República Checa
Czech Astronomical Society - República Checa
53 Lopresti, Claudio Hombre GAD Grp Astron Digitale - Italia
GAD - Gruppo Astronomia Digitale - Italia
54 Mallonn, M. Hombre Leibniz Inst Astrophys Potsdam AIP - Alemania
Leibniz Institute for Astrophysics Potsdam - Alemania
55 Mannucci, M. - Assoc Astrofili Fiorentini - Italia
Associazione Astrofili Fiorentini - Italia
56 Marino, A. Hombre Unione Astrofili Napoletani - Italia
NA - Italia
57 Mari, J. -M. -
58 Marquette, J-B - Univ Bordeaux - Francia
Université de Bordeaux - Francia
58 Marquette, J. B. Hombre Université de Bordeaux - Francia
58 Marquette, J-B - Univ Bordeaux - Francia
Université de Bordeaux - Francia
59 Michelet, J. -
60 Miller, M. Hombre British Astron Assoc - Reino Unido
AAVSO - Estados Unidos
British Astronomical Association - Reino Unido
American Association of Variable Star Observers - Estados Unidos
61 Mollier, T. -
62 Molina, D. Hombre Ctr Recursos Asociat - España
Asociación Astronómica Astro Henares - España
63 Montigiani, N. - Assoc Astrofili Fiorentini - Italia
Associazione Astrofili Fiorentini - Italia
64 Mortari, Fabio Hombre
65 Morvan, Mario Hombre UCL - Reino Unido
University College London - Reino Unido
66 Mugnai, L. V. Hombre Univ Roma La Sapienza - Italia
Sapienza Università di Roma - Italia
67 Naponiello, L. - Univ Firenze - Italia
Osservatorio Polifunz Chianti - Italia
Università degli Studi di Firenze - Italia
Osservatorio Polifunzionale del Chianti - Italia
68 Nastasi, A. Hombre GAL Hassin Ctr Int Sci Astron - Italia
GAL Hassin - Centro Internazionale per le Scienze Astronomiche - Italia
69 Neito, R. - Tartu Observ - Estonia
Tartu Observatoorium - Estonia
70 Pace, E. P. - Univ Firenze - Italia
Osservatorio Polifunz Chianti - Italia
Università degli Studi di Firenze - Italia
Osservatorio Polifunzionale del Chianti - Italia
71 Papadeas, P. - Hellen Amateur Astron Assoc - Grecia
Hellenic Amateur Astronomy Association - Grecia
72 Paschalis, Nikolaos Hombre
73 Pereira, C. Hombre Univ Lisbon - Portugal
Faculdade de Ciências, Universidade de Lisboa - Portugal
74 Perroud, V. -
75 Phillips, Mark Hombre British Astron Assoc - Reino Unido
Astron Soc Edinburgh - Reino Unido
British Astronomical Association - Reino Unido
Astronomical Society of Edinburgh - Reino Unido
76 Pintr, P. Hombre Inst Plasma Phys AS CR - República Checa
Institute of Plasma Physics, Academy of Sciences of the Czech Republic - República Checa
77 Pioppa, J-B - AAVSO - Estados Unidos
Grp Astron Populaire Reg Antibes - Francia
American Association of Variable Star Observers - Estados Unidos
Groupement Astronomique Populaire de la Région d'Antibes (GAPRA) - Francia
78 Popowicz, A. Hombre Silesian Tech Univ - Polonia
Silesian University of Technology - Polonia
79 Raetz, Manfred Hombre Bundesdeutsch Arbeitsgemeinschaft Veranderl Stern - Alemania
Volkssternwarte Kirchheim eV - Alemania
Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e. V. - Alemania
Volkssternwarte Kirchheim E.V. - Alemania
Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e.V. - Alemania
80 Regembal, Francois -
81 Rickard, K. -
82 Roberts, M. -
83 Rousselot, Lionel - Soc Astron France - Francia
Société Astronomique de France - Francia
84 Rubia, X. - Agrupacio Astron Sabadell - España
Sabadell - España
85 Savage, J. Hombre British Astron Assoc - Reino Unido
British Astronomical Association - Reino Unido
86 Sedita, Danilo Hombre
87 Shave-Wall, D. -
88 Sioulas, Nick Hombre
89 Skolnik, V -
90 Smith, M. A. Hombre
91 St-Gelais, D. - AAVSO - Estados Unidos
American Association of Variable Star Observers - Estados Unidos
92 St-Gelais, D. - AAVSO - Estados Unidos
American Association of Variable Star Observers - Estados Unidos
93 Strikis, I Hombre Hellen Amateur Astron Assoc - Grecia
Hellenic Amateur Astronomy Association - Grecia
94 Thurston, G. Hombre British Astron Assoc - Reino Unido
British Astronomical Association - Reino Unido
95 Tomacelli, A. Mujer Unione Astrofili Napoletani - Italia
NA - Italia
96 Tomatis, Alberto Hombre
97 Trevan, B. -
98 Valeau, P. -
99 Vignes, J. P. -
100 Vora, K. -
101 Vrastak, M. - Czech Astron Soc - República Checa
Czech Astronomical Society - República Checa
102 Walter, Fabian Hombre Czech Astron Soc - República Checa
Stefanik Observ - República Checa
Czech Astronomical Society - República Checa
Štefánik Observatory - República Checa
103 Wenzel, B. - Bundesdeutsch Arbeitsgemeinschaft Veranderl Stern - Alemania
Univ Vienna - Austria
Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e. V. - Alemania
Universität Wien - Austria
University of Ioannina - Austria
Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e.V. - Alemania
104 Wright, Duncan Hombre British Astron Assoc - Reino Unido
Cliddesden Primary Sch - Reino Unido
British Astronomical Association - Reino Unido
Basingstoke Astronomical Society - Reino Unido
105 Zibar, Martin Hombre Czech Astron Soc - República Checa
Czech Astronomical Society - República Checa

Muestra la afiliación y género (detectado) para los co-autores de la publicación.

Financiamiento



Fuente
European Research Council
Science and Technology Facilities Council
National Aeronautics and Space Administration
European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program
Agenzia Spaziale Italiana
UK Space Agency
Horizon 2020 Framework Programme
ASI
Center for Astrophysics
NASA award
Ile-de-France region
Harvard & Smithsonian
Paris Region fellowship program - Ile-de-France Region
program for research and Horizon 2020 innovation under the Marie Sklodowska-Curie grant
UKSA/STFC
Czech Astronomical Society
Horizon 2020 innovation
NASA’s Universe of Learning

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 758892, ExoAI) and from the UKSA/STFC grants ST/T001836/1, ST/V003380/1, and ST/W00254X/1. We acknowledge the support provided by the administrators, designers, and developers of the ETD project and of the Czech Astronomical Society both to the ExoClock project and also to the efforts of the whole amateur community through its 10+ years 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 #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). B. Edwards is a Laureate of the Paris Region fellowship program supported by the Ile-de-France Region. This project has received funding under the framework program for research and Horizon 2020 innovation under the Marie Sklodowska-Curie grant agreement No. 945298. L.V.M. is supported by ASI grant No. 2018.22.HH.O. P. Pintr acknowledges the support by the project No. CZ.02.1.01/0.0/0.0/16_026/0008390. A.P. and K.B. were responsible for automation of acquisition and processing of SUTO data and acknowledge grants: BK225/RAu-11/2021, 02/140/SDU/10-22-02. All the data products and their descriptions can found through the OSF repository with doi:10.17605/OSF.IO/WNA5E. 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), Nestle, Numpy (Harris et al. 2020), SciPy (Virtanen et al. 2020).
This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No. 758892, ExoAI) and from the UKSA/STFC grants ST/T001836/1, ST/V003380/1, and ST/W00254X/1.

Muestra la fuente de financiamiento declarada en la publicación.