24 September 2012 MOONS: a multi-object optical and near-infrared spectrograph for the VLT
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Abstract
MOONS is a new conceptual design for a Multi-Object Optical and Near-infrared Spectrograph for the Very Large Telescope (VLT), selected by ESO for a Phase A study. The baseline design consists of ~1000 fibers deployable over a field of view of ~500 square arcmin, the largest patrol field offered by the Nasmyth focus at the VLT. The total wavelength coverage is 0.8μm-1.8μm and two resolution modes: medium resolution and high resolution. In the medium resolution mode (R~4,000-6,000) the entire wavelength range 0.8μm-1.8μm is observed simultaneously, while the high resolution mode covers simultaneously three selected spectral regions: one around the CaII triplet (at R~8,000) to measure radial velocities, and two regions at R~20,000 one in the J-band and one in the H-band, for detailed measurements of chemical abundances. The grasp of the 8.2m Very Large Telescope (VLT) combined with the large multiplex and wavelength coverage of MOONS – extending into the near-IR – will provide the observational power necessary to study galaxy formation and evolution over the entire history of the Universe, from our Milky Way, through the redshift desert and up to the epoch of re-ionization at z<8-9. At the same time, the high spectral resolution mode will allow astronomers to study chemical abundances of stars in our Galaxy, in particular in the highly obscured regions of the Bulge, and provide the necessary follow-up of the Gaia mission. Such characteristics and versatility make MOONS the long-awaited workhorse near-IR MOS for the VLT, which will perfectly complement optical spectroscopy performed by FLAMES and VIMOS.
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M. Cirasuolo, M. Cirasuolo, J. Afonso, J. Afonso, R. Bender, R. Bender, P. Bonifacio, P. Bonifacio, C. Evans, C. Evans, L. Kaper, L. Kaper, Ernesto Oliva, Ernesto Oliva, Leonardo Vanzi, Leonardo Vanzi, Manuel Abreu, Manuel Abreu, Eli Atad-Ettedgui, Eli Atad-Ettedgui, Carine Babusiaux, Carine Babusiaux, Franz E. Bauer, Franz E. Bauer, Philip Best, Philip Best, Naidu Bezawada, Naidu Bezawada, Ian R. Bryson, Ian R. Bryson, Alexandre Cabral, Alexandre Cabral, Karina Caputi, Karina Caputi, Mauro Centrone, Mauro Centrone, Fanny Chemla, Fanny Chemla, Andrea Cimatti, Andrea Cimatti, Maria-Rosa Cioni, Maria-Rosa Cioni, Gisella Clementini, Gisella Clementini, João Coelho, João Coelho, Emanuele Daddi, Emanuele Daddi, James S. Dunlop, James S. Dunlop, Sofia Feltzing, Sofia Feltzing, Annette Ferguson, Annette Ferguson, Hector Flores, Hector Flores, Adriano Fontana, Adriano Fontana, Johan Fynbo, Johan Fynbo, Bianca Garilli, Bianca Garilli, Adrian M. Glauser, Adrian M. Glauser, Isabelle Guinouard, Isabelle Guinouard, Jean-François Hammer, Jean-François Hammer, Peter R. Hastings, Peter R. Hastings, Hans-Joachim Hess, Hans-Joachim Hess, Rob J. Ivison, Rob J. Ivison, Pascal Jagourel, Pascal Jagourel, Matt Jarvis, Matt Jarvis, G. Kauffman, G. Kauffman, A. Lawrence, A. Lawrence, D. Lee, D. Lee, G. Li Causi, G. Li Causi, S. Lilly, S. Lilly, D. Lorenzetti, D. Lorenzetti, R. Maiolino, R. Maiolino, F. Mannucci, F. Mannucci, R. McLure, R. McLure, D. Minniti, D. Minniti, D. Montgomery, D. Montgomery, B. Muschielok, B. Muschielok, K. Nandra, K. Nandra, R. Navarro, R. Navarro, P. Norberg, P. Norberg, L. Origlia, L. Origlia, N. Padilla, N. Padilla, J. Peacock, J. Peacock, F. Pedicini, F. Pedicini, L. Pentericci, L. Pentericci, J. Pragt, J. Pragt, M. Puech, M. Puech, S. Randich, S. Randich, A. Renzini, A. Renzini, N. Ryde, N. Ryde, M. Rodrigues, M. Rodrigues, F. Royer, F. Royer, R. Saglia, R. Saglia, A. Sánchez, A. Sánchez, H. Schnetler, H. Schnetler, D. Sobral, D. Sobral, R. Speziali, R. Speziali, S. Todd, S. Todd, E. Tolstoy, E. Tolstoy, M. Torres, M. Torres, L. Venema, L. Venema, F. Vitali, F. Vitali, M. Wegner, M. Wegner, M. Wells, M. Wells, V. Wild, V. Wild, G. Wright, G. Wright, } "MOONS: a multi-object optical and near-infrared spectrograph for the VLT", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84460S (24 September 2012); doi: 10.1117/12.925871; https://doi.org/10.1117/12.925871
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