lo spettrografo x-shooter, unoccasione per la comunità astronomica italiana paolo spanò...

Lo spettrografo X-Lo spettrografo X-SHOOTER,SHOOTER,

un’occasione per la un’occasione per la comunitàcomunità

astronomica italianaastronomica italianaPaolo SpanòPaolo Spanò

INAF-O.A.BreraINAF-O.A.Brera

(on behalf of the X-SHOOTER team)(on behalf of the X-SHOOTER team)

Teramo - SAIt 2008Teramo - SAIt 2008 P. SpanòP. Spanò 22

X-SHOOTERX-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…


Primary science casePrimary science case

Stellar astrophysicsStellar astrophysics Brown dwarfs, star formation, close binaries, Brown dwarfs, star formation, close binaries,

stellar remnantsstellar remnants Cosmic explosionsCosmic explosions

Supernovae Ia progenitors, GRBsSupernovae Ia progenitors, GRBs High-z universeHigh-z universe

Faint emission-line galaxies, primordial star Faint emission-line galaxies, primordial star formation, metal enrichment in early universe, formation, metal enrichment in early universe, tomography of IGMtomography of IGM


PrimaryPrimarytop level requirementstop level requirements

Single objectSingle object Large simultaneous spectral coverageLarge simultaneous spectral coverage Deep objectsDeep objects Intermediate resolutionIntermediate resolution Rapid responseRapid response

Ideally suited for unknown or transient objectsIdeally suited for unknown or transient objects


X-shooter…X-shooter…

Very Efficient SpectrographVery Efficient Spectrograph >25% all included in all the spectral range>25% all included in all the spectral range

Wide BandWide Band Atmospheric cut-off to NIR (300-2500 nm)Atmospheric cut-off to NIR (300-2500 nm) Complete wavelength range in one shot (no Complete wavelength range in one shot (no

gaps!)gaps!) Intermediate ResolutionIntermediate Resolution

R= 7000-12000 with 0.6” slitR= 7000-12000 with 0.6” slit Single Object - Small FieldSingle Object - Small Field

Variable slit widthsVariable slit widths IFUIFU


……and friendsand friends


CharacteristicsCharacteristics

Spectral format:Spectral format: Prism cross-dispersed Prism cross-dispersed echelleechelle

Wavelength range: Wavelength range: 300-2500 nm300-2500 nmUVB: 300-550UVB: 300-550VIS: 550-1000VIS: 550-1000NIR: 1000-2500NIR: 1000-2500

Spectral resolution: Spectral resolution: 5000 (UVB, NIR), 5000 (UVB, NIR), 7000 (VIS) for 1” slit7000 (VIS) for 1” slit

Slits/Image slicer:Slits/Image slicer: 12”x1” (standard) 12”x1” (standard) 12”x0.6” (high-res) 12”x0.6” (high-res) 12”x5” (flux calibr.) IFU 12”x5” (flux calibr.) IFU 4”x1.8” -> 12”x0.6” (3 slices)4”x1.8” -> 12”x0.6” (3 slices)


Schematic viewSchematic view


The backboneThe backbone

Holds Holds spectrographs in spectrographs in place (high place (high stiffness)stiffness)

Hosts pre-slit Hosts pre-slit optics, optics, calibration, A&G, calibration, A&G, shuttershutter

N. Michaelsen (DK)

N. Christensen (DK)


Acquisition and Guiding UnitAcquisition and Guiding Unit

IFU Pellicle

3-pos mirror

A&G Camera

P. Spanò (I), A. Soerensen (Dk), H.Dekker(ESO)


Pre-slit platePre-slit plate

P. Spanò (I), N.Michaelsen (Dk),R. Mazzoleni (ESO)


Automatic Flexure Compensation Automatic Flexure Compensation SystemSystem

R. Mazzoleni (ESO)

PiezosPiezos


Optical designOptical design

4C Optical Concept4C Optical Concept


Gratings and prismsGratings and prismsAll new rulings

A. De Ugarte Postigo (I)


DetectorsDetectors

UVB:UVB: 2K x 4K E2V CCD2K x 4K E2V CCD VIS:VIS: 2K x 4K MIT/LL CCD2K x 4K MIT/LL CCD NIR:NIR: 2K x 2K Rockwell Hawaii 2RG MBE2K x 2K Rockwell Hawaii 2RG MBE

(used area 1K x 2K)(used area 1K x 2K)


VIS first lightVIS first light


Optical and mechanical testsOptical and mechanical tests


PerformancesPerformances

Italian GTO program: 45 Italian GTO program: 45 nights!nights!

Elaborated by 6 Science PanelsElaborated by 6 Science Panels Star formation, T Tauri stars, Brown Dwarfs Star formation, T Tauri stars, Brown Dwarfs

(Alcalà)(Alcalà) Stellar populations, Abundances, and Stellar populations, Abundances, and

Dynamics (Randich)Dynamics (Randich) Supernovae (Benetti)Supernovae (Benetti) Gamma Ray Bursts (Fiore)Gamma Ray Bursts (Fiore) High-Z Universe, Galaxies and AGNs (Cimatti)High-Z Universe, Galaxies and AGNs (Cimatti) Absorbers and IGM (Cristiani)Absorbers and IGM (Cristiani)


Some examplesSome examples Legacy program in galactic star forming regions Legacy program in galactic star forming regions

(PI J. Alcalà, 12 nights requested)(PI J. Alcalà, 12 nights requested)

Characterizing pre-main sequence stars in LMC Characterizing pre-main sequence stars in LMC (PI Randich, 3 nights)(PI Randich, 3 nights)

Spectroscopic classifications of Sne discovered with Spectroscopic classifications of Sne discovered with the LBC the LBC (PI Cappellaro, 4 nights)(PI Cappellaro, 4 nights)

GRB prompt afterglow-spectroscopy (RRM and ToO GRB prompt afterglow-spectroscopy (RRM and ToO modes required!)modes required!)

Optical-NIR spectra of QSO close to reionization (z~6) Optical-NIR spectra of QSO close to reionization (z~6) (PI V. D’Odorico, 3+3 nights)(PI V. D’Odorico, 3+3 nights)

Tomography of IGM with multiple QSO line of sight Tomography of IGM with multiple QSO line of sight (PI. Cristiani, 3 nights)(PI. Cristiani, 3 nights)


THE ENDTHE END

Teramo - 4 Maggio 2008Teramo - 4 Maggio 2008 Paolo SpanòPaolo Spanò 3030

lo spettrografo x-shooter, unoccasione per la comunità astronomica italiana paolo spanò...

Documents

teramo sait

slit spectral resolution

dekkereso slide

xshooter team slide

christensen dk slide

tomography of igm slide

mazzoleni eso slide

slit r