The ELT-MOS (MOSAIC): towards the construction phase

Simon Morris (1) , Francois Hammer (2) , Pascal Jagourel (2) , Christopher Evans (3) , Mathieu Puech (2) , Gavin Dalton (3) , Myriam Rodrigues (2) , Ruben Sanchez-Jansssen (3) , Ewan Fitzsimons (3) , Beatriz Barbuy (4) , Jean-Gabriel Cuby (5) , Lex Kaper (6) , Martin Roth (7) , Gérard Rousset (2) , Richard M. Myers (1) , Olivier Le Fevre (5) , Alexis Finogenov (8) , Jari Kotilainen (9) , Bruno Castilho (10) , Göran Östlin (11) , Sofia Feltzing (12) , Andreas Korn (13) , Jesus Gallego (14) , Africa Castillo Morales (14) , Jorge Iglesias-Paramo (15) , Laura Pentericci (16) , Bodo Ziegler (17) , Jose Afonso (18) , Marc Dubbledam (1) , Madeline Close (1) , Phil Parr-Burman (3) , Timothy J. Morris (1) , Fanny Chemla (2) , Fatima de Frondat (2) , Andreas Kelz (7) , Isabelle Guinouard (2) , Ian J. Lewis (19) , Kevin Middleton (3) , Ramon Navarro (20) , Marie Larrieu Johan Pragt (21) , Annemieke Janssen (20) , Kjetil Dohlen (5) , Kacem El Hadi (5) , Eric Gendron (2) , Yanbin Yang (2) , Martyn Wells (3) , Jean-Marc Conan (22) , Thierry Fusco (22) , Daniel Schaerer (23) , Edwin Bergin (24) , Sylvestre Taburet (2) , Mickael Frotin (2) , Nadia Berkourn (2)

1 Department of Physics [Durham University]
2 GEPI - Galaxies, Etoiles, Physique, Instrumentation
3 ISIS - ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ISIS Neutron and Muon Source
4 USP - Universidade de São Paulo = University of São Paulo
5 LAM - Laboratoire d'Astrophysique de Marseille
6 UvA - Universiteit van Amsterdam
7 AIP - Leibniz-Institut für Astrophysik Potsdam
8 Helsingin yliopisto = Helsingfors universitet = University of Helsinki
9 FINCA - Finnish Centre for Astronomy with ESO
10 Laboratorio Nacional de Astrofisica
11 Oskar Klein Centre [Stockholm]
12 Skane University Hospital [Lund]
13 Uppsala University
14 UCM - Universidad Complutense de Madrid = Complutense University of Madrid [Madrid]
15 IAA - Instituto de Astrofísica de Andalucía
16 OAR - INAF - Osservatorio Astronomico di Roma
17 Universität Wien = University of Vienna
18 Observatório Astronómico de Lisboa
19 University of Oxford
20 Netherlands Research School for Astronomy
21 IRAP - Institut de recherche en astrophysique et planétologie
22 DOTA, ONERA, Université Paris Saclay (COmUE) [Châtillon]
23 ObsGE - Observatoire Astronomique de l'Université de Genève
24 University of Michigan [Ann Arbor]

When combined with the huge collecting area of the ELT, MOSAIC will be the most effective and flexible Multi-Object Spectrograph (MOS) facility in the world, having both a high multiplex and a multi-Integral Field Unit (Multi-IFU) capability. It will be the fastest way to spectroscopically follow-up the faintest sources, probing the reionisation epoch, as well as evaluating the evolution of the dwarf mass function over most of the age of the Universe. MOSAIC will be world-leading in generating an inventory of both the dark matter (from realistic rotation curves with MOAO fed NIR IFUs) and the cool to warm-hot gas phases in z=3.5 galactic haloes (with visible wavelenth IFUs). Galactic archaeology and the first massive black holes are additional targets for which MOSAIC will also be revolutionary. MOAO and accurate sky subtraction with fibres have now been demonstrated on sky, removing all low Technical Readiness Level (TRL) items from the instrument. A prompt implementation of MOSAIC is feasible, and indeed could increase the robustness and reduce risk on the ELT, since it does not require diffraction limited adaptive optics performance. Science programmes and survey strategies are currently being investigated by the Consortium, which is also hoping to welcome a few new partners in the next two years.

Mots clés: TELESCOPES; VISIBLE RADIATION; NEAR INFRARED; ADAPTIVE OPTICS; GALACTIC ASTRONOMY; ASTRONOMICAL IMAGING; SPECTROGRAPHS

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]

Simon Morris, Francois Hammer, Pascal Jagourel, Christopher Evans, Mathieu Puech, et al.. The ELT-MOS (MOSAIC): towards the construction phase. SPIE Astronomical Telescopes + Instrumentation, Jun 2018, Austin, United States. ⟨10.1117/12.2311430⟩. ⟨hal-02408927⟩