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Theia: Faint objects in motion or the new astrometry frontier

The Theia Collaboration; Boehm, Celine; Krone-Martins, Alberto; Amorim, Antonio; Anglada-Escude, Guillem; Brandeker, Alexis; Courbin, Frederic; Ensslin, Torsten; Falcao, Antonio; Freese, Katherine; Holl, Berry; Labadie, Lucas; Leger, Alain; Malbet, Fabien; Mamon, Gary; McArthur, Barbara; Mora, Alcione; Shao, Michael; Sozzetti, Alessandro; Spolyar, Douglas; Villaver, Eva; Albertus, Conrado; Bertone, Stefano; Bouy, Herve; Boylan-Kolchin, Michael; Brown, Anthony; Brown, Warren; Cardoso, Vitor; Chemin, Laurent; Claudi, Riccardo; Correia, Alexandre C. M.; Crosta, Mariateresa; Crouzier, Antoine; Cyr-Racine, Francis-Yan; Damasso, Mario; da Silva, Antonio; Davies, Melvyn; Das, Payel; Dayal, Pratika; de Val-Borro, Miguel; Diaferio, Antonaldo; Erickcek, Adrienne; Fairbairn, Malcolm; Fortin, Morgane; Fridlund, Malcolm; Garcia, Paulo; Gnedin, Oleg; Goobar, Ariel; Gordo, Paulo; Goullioud, Renaud; Hambly, Nigel; Hara, Nathan; Hobbs, David; Hog, Erik; Holland, Andrew; Ibata, Rodrigo; Jordi, Carme; Klioner, Sergei; Kopeikin, Sergei; Lacroix, Thomas; Laskar, Jacques; Le Poncin-Lafitte, Christophe; Luri, Xavier; Majumdar, Subhabrata; Makarov, Valeri; Massey, Richard; Mennesson, Bertrand; Michalik, Daniel; Moitinho de Almeida, Andre; Mourao, Ana; Moustakas, Leonidas; Murray, Neil; Muterspaugh, Matthew; Oertel, Micaela; Ostorero, Luisa; Perez-Garcia, Angeles; Platais, Imants; Portell i de Mora, Jordi; Quirrenbach, Andreas; Randall, Lisa; Read, Justin; Regos, Enriko; Rory, Barnes; Rybicki, Krzysztof; Scott, Pat; Schneider, Jean; Scholtz, Jakub; Siebert, Arnaud; Tereno, Ismael; Tomsick, John; Traub, Wesley; Valluri, Monica; Walker, Matt; Walton, Nicholas; Watkins, Laura; White, Glenn; Evans, Dafydd Wyn; Wyrzykowski, Lukasz and Wyse, Rosemary (2017). Theia: Faint objects in motion or the new astrometry frontier. ArXiv e-prints

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In the context of the ESA M5 (medium mission) call we proposed a new satellite mission, Theia, based on relative astrometry and extreme precision to study the motion of very faint objects in the Universe. Theia is primarily designed to study the local dark matter properties, the existence of Earth-like exoplanets in our nearest star systems and the physics of compact objects. Furthermore, about 15 % of the mission time was dedicated to an open observatory for the wider community to propose complementary science cases. With its unique metrology system and "point and stare" strategy, Theia's precision would have reached the sub micro-arcsecond level. This is about 1000 times better than ESA/Gaia's accuracy for the brightest objects and represents a factor 10-30 improvement for the faintest stars (depending on the exact observational program). In the version submitted to ESA, we proposed an optical (350-1000nm) on-axis TMA telescope. Due to ESA Technology readiness level, the camera's focal plane would have been made of CCD detectors but we anticipated an upgrade with CMOS detectors. Photometric measurements would have been performed during slew time and stabilisation phases needed for reaching the required astrometric precision.

Item Type: Journal Item
Copyright Holders: 2017 Not known
Keywords: astrophysics; instrumentation and methods for astrophysics
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Centre for Electronic Imaging (CEI)
Related URLs:
Item ID: 50213
Depositing User: G. J. White
Date Deposited: 07 Aug 2017 09:46
Last Modified: 17 Jul 2019 09:33
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