JTPFJapanese Terrestrial Planet

Finder

JTPFJapanese Terrestrial Planet

FinderM. Tamura (NAOJ)

JTPF Working Group

TPF-C coronagraph WS 2006.9.28 15:15-15:30 (15 min)

Exoplanet/Disk Exploration Approaches

in Japan ~2014

1. Indirect detection

of exoplanetsDoppler

(N2K survey)&

Transitongoing

SPICA 3.5m 2015?

AKARI 0.7m 2006

2B. Disk evolution& Exo-zodi

- disk late stage- spectroscopy

3. Spectroscopy of disks & outer planets

2006

Subaru 8.2m1999-

Subaru/HiCIAO/AO188 & ExAO2007-

~2018

JTPF 3.5m 2018?

4. Direct observations of Earth-like

planets

2A. Direct imaging of protoplanetary/debris disks & young massive planets

ongoing and near-future

Ground

Space

ELT/instrument?2016?

JTPF/High Contrast Space Telescope

Tele-scope

3.5m off-axis single aperture

Wave-length

optical and near-IR（ λ0.5micron 、 λλ0.2-5micron)

w/ limited UV capability

Launch ~2018

Lifetime 5-10 yr

Orbit Sun-Earth L2

Instru-ments

Opt-NIR coronagraph

Wide-field NIR/Opt instruments

TBD: UV spectrometer

JTPF/HCST makes full use of SPICA bus system with an optimization to shorter wavelengths.

At present, an optical high contrast space telescopewhich realizes clean and stable images is under main discussions for the JTPF architecture.

○=Earth at 8pc

Subaru

ETL

HCSTJWST

Total FOV ～ 15’

JTPF formality and collaboration basis

Project officially approved both by NAOJ and ISASNAOJ/NINS: from April 2005, Phase A

project approved, starting budget from MEXT Grant-in-Aids, 9 staff (PI: Tamura)

ISAS/JAXA: from 2002, Working Group approved by the ISAS Science Steering Committee, ~40 members (PI: Shibai)

Discussions have been made among both astronomy and planetary communities in Japan, and regarded one of the next possible programs at OPTICAL-IR (others are SPICA, ELT, JASMINE)

JTPF formality and collaboration basis

Pre-Proposal (in Japanese) published in 2005.3

JTPF formality and collaboration basis

Original mission? Collaborations? Which areas?Japanese-lead JTPF is probably after SPICA (3.5m,

MIR-FIR, ~2015) mission Coronagraph experience

Subaru telescope NIR coronagraph (CIAO, HiCIAO)SPICA MIR coronagraph (Enya, Abe, Tanaka)

Abe's talkVarious coronagraph R&D (Nishikawa, Baba, Abe, Tavrov)

Nishikawa's talk A wide-field option (Subaru prime-focus camera team,

CCD)

Interferometer experienceSPICA cooler (12mW@1.7K)SPICA mirrors (C/SiC)Optical interferometer (MIRA at NAOJ, Nishikawa)Balloon FIR interferometer experiments (FITE by Shibai

team)

JTPF formality and collaboration basis

Original mission? Collaborations? Which areas?Science with Subaru (NIR), ASTRO-F

(M&FIR), theories (simulations)NIR pre-survey of TPF/Darwin targets with

the new AO coronagraph (Subaru/HiCIAO)see evening session (Tamura, Guyon)

AKARI's MIR & FIR unbiased census of TPF/Darwin targets

Active theoretical groups (Ida, Kokubo, Tanaka,,,)

Good collaborations among observers, theoreticians, and dust team are on-going.

Observations

Theory and Experiments

Technical developments

ground-based

(SUBARU)

space-based

(ASTRO-F)

Large-scalenumerical

simulations

Laboratoryexperiment

s&

simulations

Detectordevelopmen

t& exozodi

ESP studies based on an MEXT fund “Grant-in-Aid for Scientific Research on Priority

Areas” have started (2004-2008).

Morp

holo

gy Com

positio

n

Organizing exo-solar planet sciences in Japan

NAOJ U Tokyo/ISAS

Tokyo I Tech./NAOJ Hokkaido U/Nagoya U

ISAS

2006 Dec 11-13 - Intermediate WS2008 TBD – International WS