oct.10, 2007eama7 japanese space activity on exoplanets (jaxas prespective) & pathways to...
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Oct.10, 2007 EAMA7
Japanese Space Activity on Exoplanets (JAXA’s prespective) &
Pathways to Habitable PlanetsSeptember 16, 2009Takao Nakagawa (ISAS/JAXA)
Where are we from ?
Are we alone ?
Scientific Goals What are the conditions for planetary
formation ? Incl. detection and characterization of habitable
planets. Formation of proto-planetary disk
Condensation of dust Formation and growth of
planetesimals Formation of rocky planets
and planetary cores Formation of giant planets Dissipation of gasDiversity and Unified
Scheme
Synergy
Planetary Science In situ measurements
Astronomy Remote Sensing
Hayabusa’s view of Itokawa AKARI’s view of HIP7978
Strategy to reveal the conditions of Planetary Formations
Protoplanetary disk Line spectroscopy in MIR~FIR (~mm)
IR Obs: Inner disk, complementary to ALMA
Condensation of dust and formation of planetesimals Thermal imaging in MIR and FIR
Formation of Giant Planets Direct detection and spectroscopy : MIR coronagraph Spectroscopy using transits: Stable MIR Spectrometer
Dissipation of Gas Sensitive MIR spectrometer (H2)
Formation of Habitable planets Detection of biomarkers
Overview of SPICA
Sun
L1 L2
L4
L5
Earth
L3
Mission Overview Specifications
Telescope: 3.5m, 5 K Revolving CIB at its energy peak Foramtion of Planetary Systems
Core wavelength: 5-210 μm MIR Instrument
Including Coronagraph & Spectro. Far-Infrared Instrument (SAFARI)
Orbit: Sun-Earth L2 Halo Mission Life
3 years (nominal) 5 years (goal) No expendables
Weight: 3.6 t Launch: 2018
Focal Plane Instruments
λ
v
2 m
20 m
200 m
300(100 km s-1)
3000(100 km s-1)
30000(10 km s-1)
HerschelJWST
WIDE FOV
SPICA
Unique Capability optimized for mid- and far-infrared
Good
Sensitivity
Huge Gain of Sensitivity !
2.5 orders
SPICASPICA/SAFARI
2 orders
Herschel
Photometry Spectroscopy
SPICA for the study of formation process of
planets
Disk Meneralogy and Snow Line
Characterization of Giant Planets
SPICA Coronagraphy High Contrast (106-7) Continuous Spectral Coverage
with R~200 λ ~ 3.5 – 28μm
Moderate IWA (~1”) Transit Spectroscopy
High dynamic range (fast readout)
Pointing Stability FPC-G for stability IFU for good photometric
stability Characterization of IR detectors
Dofocusing Model Atmosphere by Burrows et al. (2003) For 2Mj, 100 Myr planets around G2V starSimulated for SPICA coronagraph (Kotani)
SPICA as an International Mission
16
International Collaboration Scheme
ESAI/F Management
SAFARI Consortium
System Integration
EuropeanTeams
JapaneseTeams
FPI : SAFARI
ESAManufacturing( test @ 80K )
JAXAIntegration( test @<10K )
Telescope
JAXASubsystemIntegrator
Japanese Group
Korean Team (TBD)
NAOJ (TBD)
FPI:MIRs + SCI
JAXA SPICA team: System Integration
SPICA Steering Committee
FPI:FPCFPI:BLISS
NASA Team
(TBD)
※ FPI : Focal Plane Instrument SAFARI : SPICA Far-Infrared Instrument MIRs : Mid Infrared Insturuments (MIRACLE,MIRMES,MIRHES) BLISS : Background-Limited Infrared-Submikimeter Spectrograph FPC : Focal Plane finding Camera
Science Advisory Committee
Join
t Syst
em
Engin
eeri
ng
Team
Schedule
APPROVED
APPROVED
Project Approval Review
CV Down SelectionCV Final Selection
Japanese Perspectiveon Pathways to Habitable
Planets
Japanese Perspective The enterprise to achieve the ultimate
goal (detection and characterization of habitable planets) should be international JTPF WG activity (M. Tamura’ s talk)
Concrete and coherent strategy with important mile stones. SPICA is a very important mile stone
Scientific achievements Technology development
R&D strategy Coronagraph
SPICA Enya’s talk Posters (Kotani, Haze)
Interferometry FITE (Shibai’s poster)
Test Bed Small satellite series
E.G. 60cm telescope on ASNARO
Space Odyssey in 2018
Where are we from ?
Are we alone ?
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