Subaru Strategic Programs with Hyper Suprime-Cam
and Prime Focus Spectrograph
Masayuki Tanaka(National Astronomical Observatory of Japan)

Hyper Suprime-Cam

ACS/HST field of view

Camera bodyWide-field corrector

104 full depletion science CCDs. 12 CCDs for guiding and focusing.

104 full depletion science CCDs. 12 CCDs for guiding and focusing.
HSC filter system
5 broad-band filters (grizy) and several narrow-band filters.

HSC Strategic Survey
Check out our website: http://hsc.mtk.nao.ac.jp/

Group photo from the HSC collaboration meeting at IPMU in AugustSubaru Strategic Program
International collaboration of all Japan, Princeton, and Taiwan.
Over 170 scientists are putting efforts in a huge observing program of300 nights over 5-6 years. The survey started in March 2014 and it isabout 30% done.
SSP proposal

Group photo from the HSC collaboration meeting at IPMU in AugustSurvey powerSurvey fields
DEEP2-F3 (D)SXDS (UD)XMMLSS (D)ELIAS-N1 (D)Full overlap with SDSSCOSMOS (UD)Low dust extinction
E-COSMOS (D)
Wide R.A. range
Overlap with other NIR, spec, etc surveys.

Science goals

Weak-lensing cosmology
High-redshift galaxies
Galaxy evolution
Clusters of galaxies
Transient objects
Solar system bodies
AGN/QSO
Milky Way
Strong lensing...

Science goals

Weak-lensing cosmology
High-redshift galaxies
Galaxy evolution
Clusters of galaxies
Transient objects
Solar system bodies
AGN/QSO
Milky Way
Strong lensing...

Science goals

Weak-lensing cosmology
High-redshift galaxies
Galaxy evolution
Clusters of galaxies
Transient objects
Solar system bodies
AGN/QSO
Milky Way
Strong lensing...

Survey progress~250 square degrees surveyed so far. Note the excellent seeing!
Figure courtesy: Yasuda-san.

CLAUDS: u-band imaging follow-up of the HSCCollaborating surveys Deep fields down to u=28.0 with CFHT/Megacam.
The observation is almost done!

JHK follow-up of the HSC-Deep fields with UKIRT/WFCAM.
2 hours in each band. We are making good progress!

First public data release from HSC
We are going to make the first public data release in February 2017!
The release will include data taken up to Nov 2015 and theprocessed images and catalogs as well as raw data will be madeavailable to the community. We will release ~100 square degrees offull-color full-depth data.
User-friendly web interfaces make it easy for you to retrieve thedata. A super useful googleMap-like image browser will also be
extremely useful.
Stay tuned!

Early Science Results

A special PASJ issue is being planned for the first year science papers.

Virgo I – a new dwarf satellite of the Milky Way

Homma et al. ApJ in press (arXiv:1609.04346)

Virgo I – a new dwarf satellite of the Milky Way

Virgo I is one of the faintest dwarf galaxy located at ~90kpc, demonstrating thepower of the HSC survey.

Homma et al. ApJ in press (arXiv:1609.04346)

Ultra Diffuse Galaxies

Tanaka et al. in prep.

Tanaka et al. 2016, ApJ, 826, L19

Eye of Horus

Tanaka et al. 2016, ApJ, 826, L19

First DSP lens system with
spec-z’s for both sources!

Tanaka et al. 2016, ApJ, 826, L19

Lens models
Observation(lens subtracted)

GLEE
Suyu et al. 2010

GlaficOguri 2010

We broadly reproduce the main features of the system using two independent codes.
But, we need a subhalo to reproduce the A+C splitting.
The lens is likely a cluster BCG. Need to incorporate environment effects.
Tanaka et al. 2016, ApJ, 826, L19

Emission line objects

z~0.4z~0.8z~1.5

With the narrow-bands, we can detect emission line objects in narrow
redshift slices to trace LSS as well as to study effects of LSS on galaxyevolution.

Hayashi et al. in prep.

Proto-clusters traced by LBGs

Over 100 proto-cluster candidates so far. Number density ~ 10^-7 Mpc^-3.
A preliminary clustering analysis suggests r_0~30 Mpc.
Toshikawa/Uchiyama et al. in prep.

...and many more!

Work in progress on
Very massive galaxies
Ultra Diffuse Galaxies (UDGs)
Green peas
Very bright Lyman alpha emitters
Very bright Lyman break galaxies
Solar system bodies
Dust Obscured Galaxies (DOGs)
QSO-galaxy cross correlation
Hosts of radio galaxies
Galaxy-scale strong lensing
Cluster-scale strong lensing
Stellar tidal streams around nearby galaxies
Blue Horizontal Branch stars to probe the MW haloetc, etc, etc...

PFS-Galaxy Survey

Annual collaboration meeting around Dec
WG chair + software meeting every half a yearExtended collaboration

New members:● Chinese PFS Participation Consortium● MPE● Northeastern Consortium?
● Columbia● Connecticut● Dartmouth● Illinois● UMass● Pittsburgh● Tufts
From Tamura-san's slide, a very old version

Science goals

Unique instrument for z~1 galaxy science

PFS covers all the important emission/absorption features of galaxies around z<~1.
An ideal instrument to follow-up ALPACA sources.

The Competition (updated)
DESI: cosmology
MOONS: GA and galaxy surveys
WEAVE??

4MOST: GA & galaxy surveys

eBOSS/HETDEX:cosmologyPFSCOMMISSIONINGPFSCONSTRUCTI
ON
1/17

1/18

EUCLID: cosmology

1/19

1/20

PFS SCIENCE OPS

1/21

1/22

1/23

1/24

1/25

From R. Ellis at PFS collab. MeetingProposal writing
Each WG submits a science document summarizing(1) science objectives(2) survey design and sample selection(3) physical parameters to be measured(4) feasibility
by June 1st, 2017.
The galaxy WG has to submit 4 smaller ones:(a) LAEs(b) LBGs(c) IGM(d) rest-frame optical at z=0.8-2
All the documents will be abstracted into the first complete SSP proposal by Dec.
2017.

Survey design is still under debate...
(somewhat old version)

SummarySummary●The HSC survey is a 300-night survey at the Subaru Telescope started about 2.5years ago.

●The survey is 35% done as of today. We are making good progress!

●

Check out our website for the details of the survey, http://hsc.mtk.nao.ac.jp/●

A number of early science papers have been published already; from thediscovery of a new MW dwarf galaxy to the discovery of high-z QSOs.

●PFS science operations are likely to start around ~S20B.

●The galaxy survey is still under discussion...