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ULTIMATE-SUBARU PROLOGUESUBARU STRATEGIC PLAN TOWARD 2030

Subaru is going to be a “wide-field survey oriented” telescope:

1. Very wide-field optical imager
2. Wide-field multi-object spectrograph
3. Wide-field NIR imager and MOS/IFU spectrograph w/ AO

Dark nights ()
Spec.

Img.

HSC (2013-)
PFS (2022-)
ULTIMATE (2026-)

Bright nights ()PFS (~2022-)

ULTIMATE(~2026-)

HSC (2013-)
1 λ [um]

2

ULTIMATE = ULTRA-WIDE-FIELD LASER TOMOGRAPHIC IMAGER and MOS with AO
for TRANSCENDENT EXPLORATION by SUBARUULTIMATE-SUBARU CONCEPTGLAO : WIDE-FIELD ADAPTIVE OPTICS ON SUBARU

Improve image quality (hence sensitivity) over ~20-arcmin
FWHM~0.2” @ K-band = resolution of HST/WFIRST @ Y,J,H
GLAO(0.2”)

seeingK-band, Maunakea(c.f. 0.3”-0.4” @ VLT)SF galaxies @ z=2

seeinghttps://www.eso.org/sci/facilities/develop/ao/ao_modes/.html

with GLAO (0.2”)

ULTIMATE-SUBARU CONCEPTULTIMATE-SUBARU KEY SUBSYSTEMS
2019年度より
国立天文台Aプロとして発足「すばるGLAOプロジェクト」

2017-2021年度 科研費基盤(S)“ULTIMATE-START”
代表: 秋山正幸 [東北大]ULTIMATE-SUBARU UNIQUENESSULTIMATE-SUBARU = GLAO + NEW IR INSTRUMENT
NIR (K-band) facilities available in 2020s and beyond.

[typical classical AO][w/ GRAAL]ULTIMATE-SUBARU UNIQUENESSUNIQUE CAPABILITIES OF ULTIMATE-SUBARU••••

Narrow- & medium-band imaging (1.0<l<2.3um)
Broad-band imaging at K-bandHigh-resolution MOS spectroscopy at H+K (Phase-I w/ MOIRCS)
AO-assisted multi-object IFU at J + H (+ K) (Phase-3)
ULTIMATE has >20x surveypower than JWST !

MOIRCSJWSTNB imaging

ULTIMATEK imaging

ULTIMATE-SUBARU SCIENCEKEY SCIENCE: “BIRTH”, “GROWTH”, “DEATH” OFGALAXIES IN THE CRADLE OF COSMIC STRUCTURE
1. First galaxies (birth)Ø Explore the LAE/LBG world toward thefrontier redshifts (z>>7) with ultradeep NB/BB imaging in NIR)((-z=8.7 z=11.8
z=7.7 z=10.0ULTIMATE-SUBARU SCIENCEKEY SCIENCE: “BIRTH”, “GROWTH”, “DEATH” OFGALAXIES IN THE CRADLE OF COSMIC STRUCTURE
1. First galaxies (birth)Ø Explore the LAE/LBG world toward thefrontier redshifts (z>>7) with ultradeep NB/BB imaging in NIR

z=8.7 z=11.8
z=7.7 z=10.0

Ø)((SF galaxies @ z=2-
 (z217a)

seeing2. Stellar build-up (growth)Ø Deep & sharp & panoramic NB Ha/[OIII]
imaging galaxies at “cosmic noon”(z=0.5-3.5)

3. Quenching (death)Ø Tracking down the rest-optical SEDs of galaxies@ z~5 with BB/MB imaging (in K-band).

GLAOULTIMATEWFIRST
Galaxies at z=4

ULTIMATE-SUBARU SCIENCEKEY SCIENCE: “BIRTH”, “GROWTH”, “DEATH” OFGALAXIES IN THE CRADLE OF COSMIC STRUCTURE
1. First galaxies (birth)Ø Explore the LAE/LBG world toward thefrontier redshifts (z>>7) with ultradeep NB/BB imaging in NIR

z=8.7 z=11.8
z=7.7 z=10.0)((4. End productsØ Complete census of ~60
nearby galaxies @D<11Mpc with BB+NB.

SF galaxies @ z=2- (z217a)

seeing2. Stellar build-up (growth)Ø Deep & sharp & panoramic NB Ha/[OIII]
imaging galaxies at “cosmic noon”(z=0.5-3.5)

3. Quenching (death)Ø Tracking down the rest-optical SEDs of galaxies@ z~5 with BB/MB imaging (in K-band).

GLAOULTIMATEWFIRST
Galaxies at z=4

ULTIMATE-SUBARU SCIENCE

TIME DOMAIN ASTRONOMY IN ULTIMATE ERASupernovae search at z>6 – visiting ~1-deg2 every 180-days down to K > 26 mag (AB)will allow us to detect PopIII pair-instability SNe at 6<z<7.

(Moriya et al. 2019)
Note: the finally combined image from this survey will reach K>27.5 (AB mag) .

ULTIMATE-SUBARUULTIMATE SCIENCE SCIENCEPRELIMINARY SURVEY DESIGNULTIMATE-Deep~2-deg2, ~0.25”
NB/MB/BB(K) ~26 mag

ULTIMATE-UltraDeep~0.5-deg2, <0.2”
BB(K)>27 mag“PREMIUMS”
Panoramic
REsearch with
Multi-band
Imaging by
ULTIMATE
Machine on
SubaruPlease give us yourinputs to maximize
the legacy value ofULTIMATE-Subaru,
and to provide ourbest sample for TMT.

http://candels-collaboration.blogspot.com/2012/07/cosmos-cosmic-evolution-survey.html © NASA/ESA/Z. Levay

ULTIMATE-SUBARU SCIENCEULTIMATE FOR A VARIETY OF SCIENCE IN OUR GALAXY:GALACTIC CENTER & STAR-FORMING REGIONSULTIMATE-SUBARU SCIENCEULTIMATE IS NOT ONLY FOR WIDE-FIELD AO▸ Please also recognize our“narrow-mode” capability.
▸ Our LTAO mode can deliver
ultimately high spatial
resolution and high sensitivity
to your favorite target!

Narrow
Small field
field+ extreme
correction

Wide field+ moderatecorrection

Strehl ratio

FWHMLTAO
GLAO(0.2” @ K)
LTAO
(0.05” @ all l) GLAOULTIMATE SUMMARY

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