@misc{10481/70876,
year = {2021},
month = {9},
url = {http://hdl.handle.net/10481/70876},
abstract = {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 JamesWebb 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.},
organization = {NASA’s Virtual Planetary Laboratory  NNA13AA93A},
organization = {CFisUC strategic project
(UID/FIS/04564/2019)},
organization = {Swiss National Science Foundation (SNSF)},
organization = {European Research Council (ERC) under the European Union’s Horizon 2020 research and
innovation program (COSMICLENS: grant agreement No. 787886)},
organization = {Polish
National Science Centre (NCN) under Grant No. 2017/26/D/ST9/00591},
organization = {Swedish National Space Agency (DNR 65/19, 174/18)},
organization = {Swedish
National Space Agency (SNSA/Rymdstyrelsen)},
organization = {Portugese Fundacão
para a Ciência e a Tecnologia (FCT) through the Strategic Programme UID/FIS/00099/2019 for CENTRA},
organization = {Australian Research Council under grant FT190100814},
organization = {Polish NCN grants: Harmonia No. 2018/06M/ST9/00311 and Daina No.
2017/27/L/ST9/03221},
organization = {Italian Space Agency (ASI)
under contracts 2014-025-R.1.2015 and 2018-24-HH.0},
organization = {Italian Ministry of Foreign
Affairs and International Cooperation (ASTRA)},
organization = {LabEx
FOCUS ANR-11-LABX-0013},
organization = {Spanish Ministry
of Science, Innovation and University (MICIU/FEDER, UE) through grants RTI2018-095076-B-C21,
ESP2016-80079-C2-1-R},
organization = {Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad
de Excelencia ’Mar´ıa de Maeztu’) through grants MDM-2014-0369 and CEX2019-000918-M},
organization = {Fundacão para a Ciência e a Tecnologia,
with grants reference UIDB/00099/ 2020 and SFRH/BSAB/142940/2018 (P.G. only)},
organization = {Italian Ministry of Education, University and Research (MIUR)
under the Departments of Excellence grant L.232/2016, and from the INFN grant InDark},
organization = {Emeritus Fellowship from The Leverhulme Trust},
organization = {Spanish grant PGC2018-101950-B-100},
organization = {Istituto Nazionale di Astrofisica within the CRUI-CARE Agreement},
publisher = {Springer},
keywords = {Astrometry},
keywords = {Cosmology},
keywords = {Local universe},
keywords = {Exoplanets},
keywords = {Space mission},
title = {Faint objects in motion: the new frontier of high precision astrometry},
doi = {10.1007/s10686-021-09781-1},
author = {Malbet, Fabien and Albertus Torres, Conrado},
}