Subaru Telescope Current - Future Plan 2016 2022 - Nobuo ARIMOTO Subaru Telescope - Gemini Observatory Web Archive
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Subaru Telescope
Current – Future Plan
2016 - 2022
Nobuo ARIMOTO
Subaru Telescope
Subaru Telescope Powerful Staff
3
Subaru Telescope
Classical Nova Explosions are Major Lithium Factories in the
Universe (Tajitsu et al. 2015)
Classical
novae
are
strong
candidates
as
suppliers
of
Li
in
the
universe.
4
Subaru Telescope
Rapid evolutionary transition revealed
in massive quenched galaxies (Onodera et al. 2015)
Composite Rest-frame Optical Spectrum of
24 pBzK Galaxies at =1.6
Subaru Telescope
Subaru Telescope Detects Sudden Appearance of Galaxies
in the Early Universe
A team of astronomers using the Subaru Telescope's Suprime-Cam to perform
the Subaru Ultra-Deep Survey for Lyman-alpha Emitters have looked back
more than 13 billion years to find 7 early galaxies that appeared quite suddenly
within 700 million years of the Big Bang (Konno et al. 2014).
Change of Subaru Operations
Current Future
Wide variety of instruments Emphasis on surveys
Classical observations Queue/Remote observations
Instrument Timeline (Decommission Plan)
Hyper Suprime-Cam has started Open-use in March 2014
Hyper-Suprime-Cam (HSC)
HSCSubaru Telescope
Wide Field View & Sharpe Images
• Quicker, Wider, Deeper, Sharper
HST
The current SprimeCam image (M. Oguri)
HSC
Galaxy cluster
Field of View
~50,000 galaxy imagesHSC Survey Area
HSC-D
R.A.
HSC-W
HSC-D/UD
DEC
Galactic Extinction E(B-V)
• HSC Survey Area
– Include the previous surveis
Subaru Strategic Program
– Little absorption by dust ２０１４－２０２０
– Observable whole year ３００ NightsImage Quality of HSC
So far ~1.5 nights (Subaru has 8 instruments), but soon ~15nights
Subaru HSC image (riz: ~2.5hrs)
COSMOS HST (640 orbits: ~500hrs)
• a
Data reduced by HSC pipeline
(NAOJ, Princeton, Kavli IPMU)
Hubble TelescopeHSC Sky Mapping
Kavli IPMU, U. Tokyo PFS project office
… in Prime focus
unit “POpt2” with
Wide Field Corrector
“WFC”.
Spectrograph
system (SpS)
On the forth
floor
POpt2 & WFC will be
shared with Hyper
Suprime Cam (HSC).
Software system
Calibration systemSpectrograph System
“Red”
Mid. Res. Mode in the Red Arm
“NIR”
“Blue”Red
Blue
NIR
Low Res
Mid Res
Collimator F/#
2.5
Camera F/#
1.1
# of science fibers
597 or 600
Operating temperature
3 +/- 0.5 degC
Input fiber core diameter
129um
Wavelength coverage
380-650nm
630-970nm
710-885nm
940-1260nm
Resolving power
~2300
~3000
~5000
~4300
CCD CCD (Hamamatsu, with H4RG (Teledyne,
(Hamamatsu, with the same coating as HSC)
1.7um cutoff)
Type
a new blue
Detector
coating)
Format
(4K x 2K) x 2
(4K x 2K) x 2
4K x 4K
Pixel size
15um
Readout noise
~4 e-/pix
4 e-/pix
Dark
~0.4 e-/pix/hour
0.01 e-/pix/s
Thermal background
None
0.006 e-/pix/sThree Pillars of Subaru/PFS
Survey Science
• Cosmology (100-120 nights)
• Galaxy & AGN evolution (100-120 nights)
• Galactic Archaeology (100-120 nights)ULTIMATE-Subaru
4 Lasers
（side irradiation）
Deformable
secondary
mirror
NIR inst.
Wave front
14’ FoV
sensor
Multi-Object IFU
Wide-field CameraScience of ULTIMATE Subaru
• Dissect the Galactic Evolution of the Golden Age
– Sample of a few 1000 galaxies at 17.5, physical process of cosmic re-
ionization
• → Subaru Original Samples for TMT
• Sampling of the most interesting targets cannot be done
by HSC + PFS alone.
• Improvement of Telescope Performance - contributing to
various scienceSCExAO Properties:
Single
object
AO
Narrow
field-‐of-‐view
(SCExAO visible images
FWHM 17mas
Resolves some stars
Lucky-‐Imaging
in
VisibleSpeckle nulling on-sky results
Sum
of
5000
frames:
shift
and
add
Speckle
controlled
region
Most
of
the
quasi-‐sta=c
speckles
are
removed
High-‐contrast
for
exo-‐planet
detec=onCHARIS – Integral Field Spectrograph (2016)
Prism Slider
Major Science Objective:
Spectral characterization of Exoplanets,
Disks, Brown dwarfs
2.07”x2.07” FOV
LOW RESOLUTION MODE:
R~19, J+H+K Band
65-70% instrument throughput, 15% (10% K) from atmosphere to detector
HIGH RESOLUTION MODE:
R~70-90: J,H, and K Bands
55-60% instrument throughput, ~15% from atmosphere to detector
New technology contributions: Crosstalk Mitigation and New Dispersion ModesInfrared
Doppler
(IRD)
• High-‐resolu=on,
NIR
spectrograph
for
exo-‐planet
detec=on
by
radial
velocity
(RV)
method
(PI:
Tamura,
M.,
Univ.
of
Tokyo)
• Use
a
laser
frequency
comb
to
achieve
very
high
RV
precision
(~1m/
s)
• Planning
a
large
survey
(~170
nights)
for
detec=ng
exo-‐planets
around
nearby
M-‐dwarfs.
1. Detec=on
of
~10
habitable
Earth-‐like
planets
around
nearby
M
dwarfs.
2. Sta=s=cal
studies
of
planet
forma=on
around
low-‐mass
stars
with
more
than
50
detec=ons
of
exo-‐planets
including
Earth
mass
planets.
• The
instrument
is
being
developed
with
the
aim
of
having
first
light
at
the
end
of
2015,
and
star=ng
the
survey
in
2016.
Overview of the IRD instrument
Laser Comb
Mode scrambler
Resolution: R=70000
Wavelength: 0.97-1.75um
Star light Cryo: 60K (detector), 200K (optics)
From AO
Fiber injection system
(AO bench)
Fiber
Fiber (star)
(Comb)
spectrometer
Laser frequency comb Spectrometer system
(IR Observing floor) Coudé Room (Coudé room)RAVEN Project
International Collaboration
– Canada (Uvic/NRC-HA) and Japan (Subaru/Tohoku Univ)
– 6M CAD over 4 years
First MOAO demonstrator on 8m (First light in 2014)
– Multi-Object Adaptive Optics
– For future development for 30m
Science Observation in 2015
Up: schematic diagram of future MOAO on 30m
Left: 3D CAD model of RAVEN optical benchRAVEN Results
The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have
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image and then insert it again.
At Nasmyth focus w/ IRCS behind
Simultaneously observed echelle spectra (the middle
MOAO correction two) compared with reference spectra (top & bottom).Strategy from Subaru to TMT
2012 2014 2016 2018 2020
2022 2024
2026
2028
TMT Construction
Subaru Operation
Subaru/TMT Operation
Dark Matter Distribution
Origin of Dark Matter
20 Earth-like Habitable Search for H2O/O2 Planets
TMT Planets
Detailed A few Million
Emission-line Origin of Dark Energy
Research
Galaxies
100 z>7.5
Re-ionization
Galaxies
HSC Wide Field Survey
IRD・CHARIS Earth-like Planets, Young Planets
Subaru PFS Expanding Universe
Wide
ULTIMATE-Subaru
Ultra high-z galaxies
Survey
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