Faint objects in motion

Autor(en): Fabien Malbet, Céline Boehm, Alberto Krone-Martins, Antonio Amorim, Guillem Anglada-Escudé, Alexis Brandeker, Frédéric Courbin, Torsten Enßlin, Antonio Falcão, Katherine Freese, Berry Holl, Lucas Labadie, Alain Léger, Gary A. Mamon, Barbara McArthur, Alcione Mora, Mike Shao, Alessandro Sozzetti, Douglas Spolyar, Eva Villaver, Ummi Abbas, Conrado Albertus, João Alves, Rory Barnes, Aldo Stefano Bonomo, Hervé Bouy, Warren R. Brown, Vitor Cardoso, Marco Castellani, Laurent Chemin, Hamish Clark, Alexandre C.M. Correia, Mariateresa Crosta, Antoine Crouzier, Mario Damasso, Jeremy Darling, Melvyn B. Davies, Antonaldo Diaferio, Morgane Fortin, Malcolm Fridlund, Mario Gai, Paulo Garcia, Oleg Gnedin, Ariel Goobar, Paulo Gordo, Renaud Goullioud, David Hall, Nigel Hambly, Diana Harrison, David Hobbs, Andrew Holland, Erik Høg, Carme Jordi, Sergei Klioner, Ariane Lançon, Jacques Laskar, Mario Lattanzi, Christophe Le Poncin-Lafitte, Xavier Luri, Daniel Michalik, André Moitinho de Almeida, Ana Mourão, Leonidas Moustakas, Neil J. Murray, Matthew Muterspaugh, Micaela Oertel, Luisa Ostorero, Jordi Portell, Jean Pierre Prost, Andreas Quirrenbach, Jean Schneider, Pat Scott, Arnaud Siebert, Antonio da Silva, Manuel Silva, Philippe Thébault, John Tomsick, Wesley Traub, Miguel de Val-Borro, Monica Valluri, Nicholas A. Walton, Laura L. Watkins, Glenn White, Lukasz Wyrzykowski, Rosemary Wyse, Yoshiyuki Yamada
Abstrakt: Sky survey telescopes and powerful targeted telescopes play complementary roles in astronomy. In order to investigate the nature and characteristics of the motions of very faint objects, a flexibly-pointed instrument capable of high astrometric accuracy is an ideal complement to current astrometric surveys and a unique tool for precision astrophysics. Such a space-based mission will push the frontier of precision astrometry from evidence of Earth-mass habitable worlds around the nearest stars, to distant Milky Way objects, and out to the Local Group of galaxies. As we enter the era of the James Webb Space Telescope and the new ground-based, adaptive-optics-enabled giant telescopes, by obtaining these high precision measurements on key objects that Gaia could not reach, a mission that focuses on high precision astrometry science can consolidate our theoretical understanding of the local Universe, enable extrapolation of physical processes to remote redshifts, and derive a much more consistent picture of cosmological evolution and the likely fate of our cosmos. Already several missions have been proposed to address the science case of faint objects in motion using high precision astrometry missions: NEAT proposed for the ESA M3 opportunity, micro-NEAT for the S1 opportunity, and Theia for the M4 and M5 opportunities. Additional new mission configurations adapted with technological innovations could be envisioned to pursue accurate measurements of these extremely small motions. The goal of this White Paper is to address the fundamental science questions that are at stake when we focus on the motions of faint sky objects and to briefly review instrumentation and mission profiles.
Organisation(en): Institut für Astrophysik
Externe Organisation(en): Université Grenoble-Alpes, The University of Sydney, Universidade de Lisboa, University of London, Stockholm University, École polytechnique fédérale de Lausanne, Max-Planck-Institut für Astrophysik, UNINOVA, University of Texas, Austin, Universität Genf, Universität zu Köln, Université Paris Saclay, Université Paris VI - Pierre-et-Marie-Curie, Aurora Technology B.V., California Institute of Technology (Caltech), INAF-Osservatorio Astrofisico di Torino, European Space Astronomy Centre (ESA), Universidad de Granada, University of Washington, Universität Bordeaux, Harvard-Smithsonian Center for Astrophysics, EURATOM Association, INAF - Osservatorio Astronomico di Roma, Universidad de Antofagasta, Universidade de Coimbra, Université de recherche Paris Sciences et Lettres, University of Colorado, Boulder, Lund University, Università degli Studi di Torino, Sezione di Torino, Polish Academy of Sciences (PAS), Leiden University, Chalmers University of Technology, Universidade do Porto, University of Michigan, Open University, University of Edinburgh, IoA, Lund Observatory, University of Copenhagen, Universitat de Barcelona, Technische Universität Dresden, Université de Strasbourg, European Space Research & Technology Centre (ESA/ESTEC), Dean of Science, Thales Alenia Space, Universität Heidelberg, University of Queensland, Imperial College London, University of California, Berkeley, Planetary Science Institute, University of Cambridge, AURA for the European Space Agency, Space Telescope Science Institute, Rutherford Appleton Laboratory, University of Warsaw, Johns Hopkins University, Kyoto University
Journal: Experimental Astronomy
Band: 51
Seiten: 845-886
Anzahl der Seiten: 42
ISSN: 0922-6435
DOI: https://doi.org/10.1007/s10686-021-09781-1
Publikationsdatum: 06-2021
Peer-reviewed: Ja
ÖFOS 2012: 103003 Astronomie, 103004 Astrophysik
Schlagwörter
ASJC Scopus Sachgebiete: Astronomy and Astrophysics, Space and Planetary Science
Link zum Portal: https://ucrisportal.univie.ac.at/de/publications/b1306197-1f4c-4890-9db6-ba6e23b9d512

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