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Lo spettrografo X-SHOOTER, un’occasione per la comunità astronomica italiana

Lo spettrografo X-SHOOTER, un’occasione per la comunità astronomica italiana. Paolo Spanò INAF-O.A.Brera (on behalf of the X-SHOOTER team). X-SHOOTER.

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Lo spettrografo X-SHOOTER, un’occasione per la comunità astronomica italiana

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  1. Lo spettrografo X-SHOOTER,un’occasione per la comunitàastronomica italiana Paolo Spanò INAF-O.A.Brera (on behalfof the X-SHOOTER team)

  2. X-SHOOTER The X-Shooter team: S. D’Odorico (PI), R. Pallavicini (Co-PI), F.M. Zerbi, P. Spanò, V. De Caprio, M. Riva, M. Tintori, E. Molinari, P. Di Marcantonio, P. Santin, R. Cosentino, P. Bruno, P.K. Rasmussen, L. Kaper, H. Dekker and many others… P. Spanò

  3. Primary science case • Stellar astrophysics • Browndwarfs, star formation, closebinaries, stellar remnants • Cosmicexplosions • SupernovaeIaprogenitors, GRBs • High-zuniverse • Faintemission-linegalaxies, primordial star formation, metal enrichment in earlyuniverse, tomographyof IGM P. Spanò

  4. Primarytop level requirements • Single object • Largesimultaneousspectralcoverage • Deepobjects • Intermediate resolution • Rapidresponse Ideally suited for unknown or transient objects P. Spanò

  5. X-shooter… • VeryEfficientSpectrograph • >25% allincluded in all the spectralrange • Wide Band • Atmospheric cut-off to NIR (300-2500 nm) • Complete wavelengthrange in oneshot (no gaps!) • Intermediate Resolution • R= 7000-12000 with 0.6” slit • Single Object - SmallField • Variableslitwidths • IFU P. Spanò

  6. …and friends P. Spanò

  7. Characteristics • Spectral format: Prismcross-dispersedechelle • Wavelengthrange: 300-2500 nm UVB: 300-550 VIS: 550-1000 NIR: 1000-2500 • Spectralresolution: 5000 (UVB, NIR), 7000 (VIS) for 1” slit • Slits/Imageslicer: 12”x1” (standard) 12”x0.6” (high-res) 12”x5” (fluxcalibr.) IFU 4”x1.8” -> 12”x0.6” (3 slices) P. Spanò

  8. Schematic view P. Spanò

  9. N. Michaelsen (DK) N. Christensen (DK) The backbone • Holds spectrographs in place (high stiffness) • Hosts pre-slit optics, calibration, A&G, shutter P. Spanò

  10. Acquisition and Guiding Unit P. Spanò (I), A. Soerensen (Dk), H.Dekker(ESO) P. Spanò

  11. Pre-slit plate P. Spanò (I), N.Michaelsen (Dk),R. Mazzoleni (ESO) P. Spanò

  12. Piezos Automatic Flexure Compensation System R. Mazzoleni (ESO) P. Spanò

  13. Optical design 4C Optical Concept P. Spanò

  14. Gratings and prisms All new rulings P. Spanò A. De Ugarte Postigo (I)

  15. Detectors • UVB: 2K x 4K E2V CCD • VIS: 2K x 4K MIT/LL CCD • NIR: 2K x 2K Rockwell Hawaii 2RG MBE (used area 1K x 2K) P. Spanò

  16. VIS first light P. Spanò

  17. Optical and mechanical tests P. Spanò

  18. Performances P. Spanò

  19. P. Spanò

  20. Italian GTO program: 45 nights! • Elaboratedby 6 Science Panels • Star formation, T Tauristars, BrownDwarfs (Alcalà) • Stellar populations, Abundances, and Dynamics (Randich) • Supernovae (Benetti) • Gamma Ray Bursts (Fiore) • High-ZUniverse, Galaxies and AGNs (Cimatti) • Absorbers and IGM (Cristiani) P. Spanò

  21. Some examples • Legacyprogram in galactic star formingregions(PI J. Alcalà, 12 nightsrequested) • Characterizingpre-mainsequencestars in LMC (PI Randich, 3 nights) • SpectroscopicclassificationsofSnediscoveredwith the LBC (PI Cappellaro, 4 nights) • GRB promptafterglow-spectroscopy (RRM and ToOmodesrequired!) • Optical-NIRspectraof QSO closetoreionization (z~6) (PI V. D’Odorico, 3+3 nights) • Tomographyof IGM with multiple QSO lineofsight(PI. Cristiani, 3 nights) P. Spanò

  22. THE END Paolo Spanò

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