CUBES, the Cassegrain U-Band Efficient Spectrograph

Autor:	Cristiani, S., Alcalá, 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., Gänsicke, 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., Stürmer, J., Vanzella, E., Ventura, P., Verducci, O., Waring, C., Watson, S., Wells, M., Wright, D., Zafar, T., Zanutta, A.
Rok vydání:	2022
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Physics - Instrumentation and Detectors
Druh dokumentu:	Working Paper
Popis:	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 ~ 7,000). With the design focusing on maximizing the instrument throughput (ensuring a Signal to Noise Ratio (SNR) ~20 per high-resolution element at 313 nm for U ~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 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 detailed design and construction phase. First science operations are planned for 2028. Comment: SPIE proceedings, SPIE Astronomical Telescopes + Instrumentation 2022, Montr\'eal, Canada; 20 pages, 13 figures, 2 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2208.01672 Zobrazit plný text záznamu View this record from Arxiv