The CHEOPS mission
| Autor: | Benz, W., Broeg, C., Fortier, A., Rando, N., Beck, T., Beck, M., Queloz, D., Ehrenreich, D., Maxted, P. F. L., Isaak, K. G., Billot, N., Alibert, Y., Alonso, R., António, C., Asquier, J., Bandy, T., Bárczy, T., Barrado, D., Barros, S. C. C., Baumjohann, W., Bekkelien, A., Bergomi, M., Biondi, F., Bonfils, X., Borsato, L., Brandeker, A., Busch, M.-D., Cabrera, J., Cessa, V., Charnoz, S., Chazelas, B., Collier Cameron, A., Corral Van Damme, C., Cortes, D., Davies, M. B., Deleuil, M., Deline, A., Delrez, L., Demangeon, O., Demory, B. O., Erikson, A., Farinato, J., Fossati, L., Fridlund, M., Futyan, D., Gandolfi, D., Garcia Munoz, A., Gillon, M., Guterman, P., Gutierrez, A., Hasiba, J., Heng, K., Hernandez, E., Hoyer, S., Kiss, L. L., Kovacs, Z., Kuntzer, T., Laskar, J., Lecavelier des Etangs, A., Lendl, M., López, A., Lora, I., Lovis, C., Lüftinger, T., Magrin, D., Malvasio, L., Marafatto, L., Michaelis, H., de Miguel, D., Modrego, D., Munari, M., Nascimbeni, V., Olofsson, G., Ottacher, H., Ottensamer, R., Pagano, I., Palacios, R., Pallé, E., Peter, G., Piazza, D., Piotto, G., Pizarro, A., Pollaco, D., Ragazzoni, R., Ratti, F., Rauer, H., Ribas, I., Rieder, M., Rohlfs, R., Safa, F., Salatti, M., Santos, N. C., Scandariato, G., Ségransan, D., Simon, A. E., Smith, A. M. S., Sordet, M., Sousa, S. G., Steller, M., Szabó, G. M., Szoke, J., Thomas, N., Tschentscher, M., Udry, S., Van Grootel, V., Viotto, V., Walter, I., Walton, N. A., Wildi, F., Wolter, D. |
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| Přispěvatelé: | Fundação para a Ciência e a Tecnologia (Portugal), Ministerio de Ciencia, Innovación y Universidades (España), Generalitat de Catalunya, European Commission, University of St Andrews. School of Physics and Astronomy, University of St Andrews. St Andrews Centre for Exoplanet Science, Benz, W. [0000-0001-7896-6479], Apollo - University of Cambridge Repository, Physikalisches Institut [Bern], Universität Bern [Bern], Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève (UNIGE), School of Physics and Astronomy [Cardiff], Cardiff University, Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA), Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Universität Bern [Bern] (UNIBE), Université de Genève = University of Geneva (UNIGE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
530 Physics
media_common.quotation_subject FOS: Physical sciences 01 natural sciences 7. Clean energy law.invention 010309 optics Telescope Planet law 0103 physical sciences QB Astronomy Astrophysics::Solar and Stellar Astrophysics CHEOPS 010303 astronomy & astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) QB600 QC Astrophysics::Galaxy Astrophysics media_common QB Earth and Planetary Astrophysics (astro-ph.EP) High-precision transit photometry 520 Astronomy Exoplanets Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Astronomy and Astrophysics Small mission 3rd-DAS 620 Engineering Exoplanet Space observatory Stars Photometry (astronomy) QC Physics Space and Planetary Science Sky [SDU]Sciences of the Universe [physics] Physics::Space Physics Satellite Original Article Astrophysics::Earth and Planetary Astrophysics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Instrumentation and Methods for Astrophysics Geology Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Benz, W.; Broeg, C.; Fortier, A.; Rando, N.; Beck, T.; Beck, M.; Queloz, D.; Ehrenreich, D.; Maxted, P. F. L.; Isaak, K. G.; Billot, N.; Alibert, Y.; Alonso, R.; António, C.; Asquier, J.; Bandy, T.; Bárczy, T.; Barrado, D.; Barros, S. C. C.; Baumjohann, W.; ... (2021). The CHEOPS mission. Experimental astronomy, 51(1), pp. 109-151. Springer 10.1007/s10686-020-09679-4 Experimental Astronomy Experimental Astronomy, Springer Link, 2021, 51 (1), pp.109-151. ⟨10.1007/s10686-020-09679-4⟩ Digital.CSIC. Repositorio Institucional del CSIC instname Experimental Astronomy, 2021, 51 (1), pp.109-151. ⟨10.1007/s10686-020-09679-4⟩ |
| ISSN: | 0922-6435 1572-9508 |
| DOI: | 10.1007/s10686-020-09679-4 |
| Popis: | Benz, W., et al. The CHaracterising ExOPlanet Satellite (CHEOPS) was selected on October 19, 2012, as the first small mission (S-mission) in the ESA Science Programme and successfully launched on December 18, 2019, as a secondary passenger on a Soyuz-Fregat rocket from Kourou, French Guiana. CHEOPS is a partnership between ESA and Switzerland with important contributions by ten additional ESA Member States. CHEOPS is the first mission dedicated to search for transits of exoplanets using ultrahigh precision photometry on bright stars already known to host planets. As a follow-up mission, CHEOPS is mainly dedicated to improving, whenever possible, existing radii measurements or provide first accurate measurements for a subset of those planets for which the mass has already been estimated from ground-based spectroscopic surveys. The expected photometric precision will also allow CHEOPS to go beyond measuring only transits and to follow phase curves or to search for exo-moons, for example. Finally, by unveiling transiting exoplanets with high potential for in-depth characterisation, CHEOPS will also provide prime targets for future instruments suited to the spectroscopic characterisation of exoplanetary atmospheres. To reach its science objectives, requirements on the photometric precision and stability have been derived for stars with magnitudes ranging from 6 to 12 in the V band. In particular, CHEOPS shall be able to detect Earth-size planets transiting G5 dwarf stars (stellar radius of 0.9R) in the magnitude range 6 ≤ V ≤ 9 by achieving a photometric precision of 20 ppm in 6 hours of integration time. In the case of K-type stars (stellar radius of 0.7R) of magnitude in the range 9 ≤ V ≤ 12, CHEOPS shall be able to detect transiting Neptune-size planets achieving a photometric precision of 85 ppm in 3 hours of integration time. This precision has to be maintained over continuous periods of observation for up to 48 hours. This precision and stability will be achieved by using a single, frame-transfer, back-illuminated CCD detector at the focal plane assembly of a 33.5 cm diameter, on-axis Ritchey-Chrétien telescope. The nearly 275 kg spacecraft is nadir-locked, with a pointing accuracy of about 1 arcsec rms, and will allow for at least 1 Gbit/day downlink. The sun-synchronous dusk-dawn orbit at 700 km altitude enables having the Sun permanently on the backside of the spacecraft thus minimising Earth stray light. A mission duration of 3.5 years in orbit is foreseen to enable the execution of the science programme. During this period, 20% of the observing time is available to the wider community through yearly ESA call for proposals, as well as through discretionary time approved by ESA’s Director of Science. At the time of this writing, CHEOPS commissioning has been completed and CHEOPS has been shown to fulfill all its requirements. The mission has now started the execution of its science programme. In Portugal, this work was supported by FCT - Fundação para a Ciência e a Tecnologia through national funds and by FEDER through COMPETE2020 - Programa Operacional Competitividade e Internacionalização by these grants: UID/FIS/04434/2019; UIDB/04434/2020; UIDP/04434/2020; PTDC/FIS-AST/32113/2017 & POCI-01-0145-FEDER-032113; PTDC/FIS-AST/28953/2017 & POCI-01-0145-FEDER-028953; PTDC/FIS-AST/28987/2017 & POCI-01-0145-FEDER-028987. S.C.C.B. and S.G.S. acknowledge support from FCT through FCT contracts nr. IF/01312/2014/CP1215/CT0004, IF/00028/2014/CP1215/CT0002. O.D.S.D. is supported in the form of work contract (DL 57/2016/CP1364/CT0004) funded by national funds through Fundação para a Ciência e Tecnologia (FCT). We also acknowledge support from the Spanish Ministry of Science and Innovation and the European Regional Development Fund through grants ESP2016-80435-C2-1-R, ESP2016-80435-C2-2-R, PGC2018-098153-B-C31, PGC2018-098153-B-C33, ESP2017-87676-C5-1-R, and MDM-2017-0737 Unidad de Excelencia María de Maeztu- Centro de Astrobiología (INTA-CSIC), as well as the support of the Generalitat de Catalunya/CERCA programme. The MOC activities have been supported by the ESA contract No. 4000124370. Finally, XB, SC, DG, MF and JL acknowledge their role as ESA-appointed CHEOPS science team members. |
| Databáze: | OpenAIRE |
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