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CUBES: a UV spectrograph for the future

Covino, S. and Cristiani, S. and Alcala', J. M. and Alencar, S. H. P. and Balashev, S. A. and Barbuy, B. and Bastian, N. and Battino, U. and Bissell, L. and Bristow, P. and Calcines, A. and Calderone, G. and Cambianica, P. and Carini, R. and Carter, B. and Cassisi, S. and Castilho, B. V. and Cescutti, G. and Christlieb, N. and Cirami, R. and Conzelmann, R. and Coretti, I. and Cooke, R. and Cremonese, G. and Cunha, K. and Cupani, G. and da Silva, A. R. and D'Auria, D. and De Caprio, V. and De Cia, A. and Dekker, H. and D'Elia, V. and De Silva, G. and Diaz, M. and Di Marcantonio, P. and D'Odorico, V. and Ernandes, H. and Evans, C. and Fitzsimmons, A. and Franchini, M. and Gaensicke, B. and Genoni, M. and Giribaldi, R. E. and Gneiding, C. and Grazian, A. and Hansen, C. J. and Hopgood, J. and Kosmalski, J. and La Forgia, F. and La Penna, P. and Landoni, M. and Lazzarin, M. and Lunney, D. and Maciel, W. and Marcolino, W. and Marconi, M. and Migliorini, A. and Miller, C. and Modigliani, A, and Noterdaeme, P. and Oggioni, L. and Opitom, C. and Pariani, G. and Pilecki, B. and Piranomonte, S. and Quirrenbach, A. and Redaelli, E.M.A. and Pereira, C. B. and Randich, S. and Rossi, S. and Sanchez-Janssen, R. and Schoeller, M. and Seifert, W. and Smiljanic, R. and Snodgrass, C. and Squalli, O. and Stilz, I. and Stuermer, J. and Trost, A. and Vanzella, E. and Ventura, P. and Verducci, O. and Waring, C. and Watson, S. and Wells, M. and Wright, D. and Zafar, T. and Zanutta, A. and Zins, G. (2022) 'CUBES: a UV spectrograph for the future.', HACK100: Past, Present and Future of Astrophysical Spectroscopy Trieste, Italy, 06-10 June 2022.


In spite of the advent of extremely large telescopes in the UV/optical/NIR range, the current generation of 8-10m facilities is likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrograph (CUBES) has been designed to provide high-efficiency (>40%) observations in the near UV (305-400 nm requirement, 300-420 nm goal) at a spectral resolving power of R>20,000, although a lower-resolution, sky-limited mode of R ~ 7,000 is also planned. CUBES will offer new possibilities in many fields of astrophysics, providing access to key lines of stellar spectra: a tremendous diversity of iron-peak and heavy elements, lighter elements (in particular Beryllium) and light-element molecules (CO, CN, OH), as well as Balmer lines and the Balmer jump (particularly important for young stellar objects). The UV range is also critical in extragalactic studies: the circumgalactic medium of distant galaxies, the contribution of different types of sources to the cosmic UV background, the measurement of H2 and primordial Deuterium in a regime of relatively transparent intergalactic medium, and follow-up of explosive transients. The CUBES project completed a Phase A conceptual design in June 2021 and has now entered the Phase B dedicated to detailed design and construction. First science operations are planned for 2028. In this paper, we briefly describe the CUBES project development and goals, the main science cases, the instrument design and the project organization and management.

Item Type:Conference item (Paper)
Full text:(AM) Accepted Manuscript
Available under License - Creative Commons Attribution 4.0.
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Date accepted:No date available
Date deposited:17 January 2023
Date of first online publication:June 2022
Date first made open access:17 January 2023

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