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CUBES, the Cassegrain U-Band Efficient Spectrograph

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Cristiani, S. ; Alcala, J. M. ; Alencar, S. H. P. ; Balashev, S. A. ; Bastian, N. ; Barbuy, B. ; Battino, U. ; Calcines, A. ; Calderone, G. ; Cambianica, P. ; Carini, R. ; Carter, B. ; Cassisi, S. ; Castilho, B. V. ; Cescutti, G. ; Christlieb, N. ; Cirami, R. ; Coretti, I. ; Cooke, R. ; Covino, S. ; Cremonese, G. ; Cunha, K. ; Cupani, G. ; da Silva, A. R. ; De Caprio, V. ; De Cia, A. ; Dekker, H. ; D'Elia, V. ; De Silva, G. ; Diaz, M. ; Di Marcantonio, P. ; D'Auria, D. ; D'Odorico, V. ; Fitzsimmons, A. ; Ernandes, H. ; Evans, C. ; Franchini, M. ; Genoni, M. ; Gansicke, B. ; Giribaldi, R. E. ; Gneiding, C. ; Grazian, A. ; Hansen, C. J. ; La Forgia, F. ; Landoni, M. ; Lazzarin, M. ; Lunney, D. ; Maciel, W. ; Marcolino, W. ; Marconi, M. ; Migliorini, A. ; Miller, C. ; Noterdaeme, P. ; Opitom, C. ; Pariani, G. ; Pilecki, B. ; Piranomonte, S. ; Quirrenbach, A. ; Redaelli, E. M. A. ; Pereira, C. B. ; Randich, S. ; Rossi, S. ; Sanchez-Janssen, R. ; Seifert, W. ; Smiljanic, R. ; Snodgrass, C. ; Stilz, I. ; Stuermer, J. ; Vanzella, E. ; Ventura, P. ; Verducci, O. ; Waring, C. ; Watson, S. ; Wells, M. ; Wright, D. ; Zafar, T. ; Zanutta, A. ; Evans, CJ ; Bryant, JJ ; Motohara, K
Número total de Autores: 80
Tipo de documento: Artigo Científico
Fonte: GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX; v. 12184, p. 20-pg., 2022-01-01.
Resumo

In the era of Extremely Large Telescopes, the current generation of 8-10m facilities are 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 (with a lower-resolution, sky-limited mode of R similar to 7, 000). With the design focusing on maximizing the instrument throughput (ensuring a Signal to Noise Ratio (SNR)similar to 20 per high-resolution element at 313 nm for U similar to 18.5 mag objects in 1h of observations), it 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 H-2 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 detailed design and construction phase. First science operations are planned for 2028. (AU)

Processo FAPESP: 14/18100-4 - Populações estelares na Via Láctea: bojo, halo, disco e regiões de formação de estrelas; instrumentação para espectroscopia de alta resolução
Beneficiário:Beatriz Leonor Silveira Barbuy
Modalidade de apoio: Auxílio à Pesquisa - Temático