Prospects for Galaxy Clusters and AGN with WFIRST

24 Pages·2016·11.57 MB·English

by  Lee Armus

Prospects
 for
 Galaxy
 Clusters
 and

AGN
 with
 WFIRST

Gillian
 Wilson
 (UC
 Riverside)

+

Ian
 Dell’Antonio,
 Mark
 Lacy,
 Douglas
 Clowe,
 Megan

Donahue,
 Ranga
 Ram
 Chary,
 Marc
 Postman,
 Gus
 Evrard,

Priya
 Natarajan,
 Jane
 Rigby,
 Elena
 Pierpaoli,
 Keiichi

Umetsu,
 Tod
 Lauer,
 Massimo
 MenegheM,
 Michael
 Cooper
Features
 of
 Clusters

Bullet Cluster
Clowe+04
•  Nearly
 representa?ve
 census
 of
 maBer
 (gas,

stars,
 dark
 maBer)
 within
 ~10
 Mpc
 scales

•  Host
 the
 most
 massive
 galaxies
 and

supermassive
 black
 holes

•  Natural
 laboratories
 for
 studying
 high-­‐density

galaxy
 environments
 (100s-­‐1000s)
Why
 WFIRST
 will
 Revolu’onize
 Cluster
 Science:

1)
 Resolu?on

•  Higher
 resolu?on
 than
 LSST/Euclid
The
 CLASH
 HST
 Gallery

A383 (0.189)" A209 (0.209)" A1423 (0.214)" A2261 (0.224)" RXJ2129 (0.234)" A611 (0.288)"
MS2137 (0.315)" RXJ2248 (0.348)" MACS1931 (0.352)" MACS1115 (0.353)" RXJ1532 (0.363)" MACS1720 (0.391)"
MACS0416 (0.396)" MACS0429 (0.399)" MACS1206 (0.440)" MACS0329 (0.450)" RXJ1347 (0.451)" MACS1311 (0.494)"
MACS1149 (0.544)" MACS1423 (0.545)"MACS0717 (0.548)" MACS2129 (0.570)"MACS0647 (0.591)"MACS0744 (0.686)" CLJ1226 (0.890)"
25 clusters at 0.2 < z < 0.9 Postman+12
Why
 WFIRST
 will
 Revolu’onize
 Cluster
 Science:

2)
 Large
 FOV

•  Higher
 resolu?on
 than
 LSST/Euclid

•  Larger
 field
 of
 view
 than
 HST/JWST
CLASH
 Ensemble
 Mass
 Profile

Umetsu+15
At
 z
 <
 0.5,
 HST
 and
 JWST
 don’t
 give
 you
 virial
 radius
 in
 single
 poin?ng
WFIRST
 wide-­‐field
 imaging
 will
 allow
 HST-­‐level

PSF
 and
 galaxy
 densi?es
 over
 ~degree
 scales

Subaru
 FOV

WFIRST
 FOV

Umetsu+12
MACSJ1206.2-­‐0847
 z=0.44
Why
 WFIRST
 will
 Revolu’onize
 Cluster
 Science:

2)
 Large
 FOV

•  HLS
 will
 return
 CLASH-­‐depth
 for
 40,000
 clusters

extending
 far
 beyond
 virial
 radius

•  GO
 Program
 could
 do
 Fron?er
 Field-­‐depth
 for

>100
 clusters
Why
 WFIRST
 will
 Revolu’onize
 Cluster
 Science:

3)
 Can
 Discover
 Clusters
 at
 z
 >
 1

•  Higher
 resolu?on
 than
 LSST/Euclid

•  Larger
 field
 of
 view
 than
 HST/JWST

•  Low
 sky
 background
 in
 space
SpARCS J003645-441050

SpARCS J161314+564930

SpARCS J003442-430753

z = 0.869

z = 0.871

z = 0.867

Ten
 clusters
 at

z~1
 from
 Spitzer

SpARCS
 near-­‐IR

SpARCS J021524-034331

SpARCS J104737+574137

SpARCS J105111+581803

z = 1.004

z = 0.956

V5A7K6" z = 1.035

selected
 survey

Wilson+09, Muzzin
+09
SpARCS J161641+554513

SpARCS J163435+402151

SpARCS J163852+403843

SpARCS J003550-431224

z = 1.157

z = 1.180

z = 1.196

z = 1.335