SpIRou: a nIR échelle spectropolarimeter for CFHT

JF Donati, LATT

LATT: Donati, FouquéLAOG: Delfosse, Forveille, Bonfils, Bouvier, Ménard

LESIA: Catala, LellouchLAM: Moutou, Deleuil

OCA: Hill

Genève: Pepe, FigueiraCanada: Bohlender, Landstreet, Walker

Taiwan: Wang, Trung, LimUK: Cameron, Jardine, Gregory, Barnes

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main science drivers

habitable exo-Earthsaround low-mass stars

frequency of habitable exo-Earthsgiant planets around brown dwarfs

80% of stars within 10 pcout of reach of optical surveys

1000+ accessible targets 200+ nights/year for 5+ years

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main science drivers

habitable exo-Earthsaround low-mass stars

frequency of habitable exo-Earthsgiant planets around brown dwarfs

80% of stars within 10 pcout of reach of optical surveys

1000+ accessible targets 200+ nights/year for 5+ years

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main science drivers

habitable exo-Earthsaround low-mass stars

frequency of habitable exo-Earthsgiant planets around brown dwarfs

80% of stars within 10 pcout of reach of optical surveys

1000+ accessible targets 200+ nights/year for 5+ years

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main science drivers

habitable exo-Earthsaround low-mass stars

star/planet formation

frequency of habitable exo-Earthsgiant planets around brown dwarfs

80% of stars within 10 pcout of reach of optical surveys

1000+ accessible targets 200+ nights/year for 5+ years

embedded protostars/protodiscsbetter view @ nIR wavelengthsbetter sensitivity to mag fields

probing innermost regions (<1 AU)200+ accessible targets

50+ nights/year for 5+ years

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main science drivers

habitable exo-Earthsaround low-mass stars

star/planet formation

frequency of habitable exo-Earthsgiant planets around brown dwarfs

80% of stars within 10 pcout of reach of optical surveys

1000+ accessible targets 200+ nights/year for 5+ years

embedded protostars/protodiscsbetter view @ nIR wavelengthsbetter sensitivity to mag fields

probing innermost regions (<1 AU)200+ accessible targets

50+ nights/year for 5+ years

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NRS top priority CFHT instrument for PNPS & PNP

a scientific niche

existing instruments: narrow coverageinstrument resolution (slit) coverage (domain µm)

Phoenix/Gemini 75 K (O.17”) 0.02 (0.8-2.5)

NIRSPEC/Keck2 25 K (0.40”) 0.2 (0.9-5.5)

IRCS/Subaru 25 K (0.14”) 0.2 (1-3)

CRIRES/VLT 40 K (0.50”) 0.02 (1-5)

a scientific niche

existing instruments: narrow coverage

in construction or planned : no fibre/échelle & no spectropol

instrument resolution (slit) coverage (domain µm)

Phoenix/Gemini 75 K (O.17”) 0.02 (0.8-2.5)

NIRSPEC/Keck2 25 K (0.40”) 0.2 (0.9-5.5)

IRCS/Subaru 25 K (0.14”) 0.2 (1-3)

CRIRES/VLT 40 K (0.50”) 0.02 (1-5)

instrument resolution (feed) domain (µm) status

GIANO/TNG 50 K (O.50” slit) 0.9-2.5 2010

PRVS/Gemini 25 K (fiber) 0.9-1.8 abandoned

NAHUAL/GTC 25 K (0.18” slit) 0.9-2.4 not yet funded

SPIRou/CFHT 50 K (1.4” fiber) 0.9-2.4 2014

top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K

15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11

polarimetric capabilities & high RV accuracy (1 m/s)

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instrument concept

a Cassegrain module image stabilisation, calibration & ADCachromatic dual-beam polarimeter

fiber feed to spectrograph

top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K

15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11

polarimetric capabilities & high RV accuracy (1 m/s)

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instrument concept

a Cassegrain module

a cryogenic spectrograph

image stabilisation, calibration & ADCachromatic dual-beam polarimeter

fiber feed to spectrograph

injection module w/ image slicerdual-pupil bench-mounted spectrograph

cryogenic tank cooled @ 77 K

top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K

15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11

polarimetric capabilities & high RV accuracy (1 m/s)

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instrument concept

preliminary design by P Rabou (2008)

dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)

R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)

Hawaii-2 2kx2k detector w/ 18 µm square pixels

full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput

spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser

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optics

preliminary design by P Rabou (2008)

dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)

R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)

Hawaii-2 2kx2k detector w/ 18 µm square pixels

full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput

spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser

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optics

preliminary design by P Rabou (2008)

dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)

R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)

Hawaii-2 2kx2k detector w/ 18 µm square pixels

full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput

spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser

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optics

to be studied @ OMP (2009 - if selected)

copied from GIANO2mx1.3m cylindrical stainless steel cryostat

optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control

ultra-accurate RV stability

study modifications from GIANO resulting from different optical design

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cryomechanics

to be studied @ OMP (2009 - if selected)

copied from GIANO2mx1.3m cylindrical stainless steel cryostat

optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control

ultra-accurate RV stability

study modifications from GIANO resulting from different optical design

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cryomechanics

to be studied @ OMP (2009 - if selected)

copied from GIANO2mx1.3m cylindrical stainless steel cryostat

optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control

ultra-accurate RV stability

study modifications from GIANO resulting from different optical design

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cryomechanics

core team

PI: JF Donati (LATT)project manager: D Kouach (OMP)

instrument scientist: X Delfosse (LAOG)system engineer: E Artigau (tbc)

optics: P Rabou (LAOG) & L Parès (LATT) cryogenics: M Bouyé (OMP) & P Feautrier (LAOG)

mechanics: G Gallou (LATT) & B Dubois (OMP)detector: SY Wang (TW)

control: M Dupieux (LATT) & S Baratchart (LMTG)reduction pipeline JF Donati (LATT) & X Delfosse (LAOG)

CFHT contact: G Barrick

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team

core team

PI: JF Donati (LATT)project manager: D Kouach (OMP)

instrument scientist: X Delfosse (LAOG)system engineer: E Artigau (tbc)

optics: P Rabou (LAOG) & L Parès (LATT) cryogenics: M Bouyé (OMP) & P Feautrier (LAOG)

mechanics: G Gallou (LATT) & B Dubois (OMP)detector: SY Wang (TW)

control: M Dupieux (LATT) & S Baratchart (LMTG)reduction pipeline JF Donati (LATT) & X Delfosse (LAOG)

CFHT contact: G Barrick

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team

+ 23p international science team

tentative schedule 2008: feasibility study (completed)2008 Dec: selection of 2+ projects for phase A

2009: phase A study2009 Dec: funding of 2- projects by CFHT

2010-2011: complete design study2012-2013: construction & AIT

2014: transport, commissionning & delivery

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agenda

tentative schedule 2008: feasibility study (completed)2008 Dec: selection of 2+ projects for phase A

2009: phase A study2009 Dec: funding of 2- projects by CFHT

2010-2011: complete design study2012-2013: construction & AIT

2014: transport, commissionning & delivery

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agenda

integration @ OMP in new lab