ZFOURGE
The Four-Star Galaxy
Evolution Survey
Kim-Vy Tran
Dept. of Physics & Astronomy
Texas A&M University
zfourge.tamu.edu
ZFOURGE Survey
ZFOURGE Survey
Ivo Labbé, Kim-Vy Tran, Casey Papovich, Caroline
Straatman, Adam Tomczak, Ryan Quadri, Vithal Tilvi,
Nancy Kawinwanichakij, Ben Forrest, Rebecca Allen,
Lee Spitler, Glenn Kacprzak, Themiya Nanayakkara, Glen
Rees, Michael Cowley, Karl Glazebrook, Eric Persson,
Pat McCarthy, Andy Monson, Pieter van Dokkum How do galaxies assemble in the past 11 Gyr ?
Stellar Mass Functions
Star Formation Histories
Scaling Relations (e.g. size evolution)
Role of Galactic Environment
Active Galactic Nuclei
zfourge.tamu.edu
ZFOURGE Survey
Ivo Labbé, Kim-Vy Tran, Casey Papovich, Caroline
Straatman, Adam Tomczak, Ryan Quadri, Vithal Tilvi,
Nancy Kawinwanichakij, Ben Forrest, Rebecca Allen, Lee Spitler, Glenn Kacprzak, Themiya Nanayakkara,
Glen Rees, Michael Cowley, Karl Glazebrook, Eric
Persson, Pat McCarthy, Andy Monson, Pieter van Dokkum How do galaxies assemble in the past 11 Gyr ?
Stellar Mass Functions
Star Formation Histories
Scaling Relations (e.g. size evolution)
Role of Galactic Environment
Active Galactic Nuclei
zfourge.tamu.edu
ZFOURGE Survey
Four-Star:
Near-IR camera
on Magellan
(11’x11’)
J1J2J3~25.5
HlHs~25
Ks~24.5
Builds on NMBS (wide-field component; PI van Dokkum)
see talks by Whitaker, Marchesini
NEWFIRM 1.2”
K 12 hours
NMBS
Four-Star 0.4”
K 30 minutes
ZFOURGE
ZFOURGE Survey
CANDELS/GOODS-S
CANDELS/UDS
CANDELS/COSMOS
Galaxy Populations
ZFOURGE
- accurate zphots
- hi-res images
(K-band+CANDELS)
UVJ diagram
Wuyts+2007
Williams+2009
NMBS (NEWFIRM) Whitaker+2011
ZFOURGE Survey
Stellar Mass Functions How stars are distributed at a given epoch?
Stellar Mass Functions
ZFOURGE
+ CANDELS F160W Adam Tomczak
(TAMU), 2014, ApJ
ZFOURGE
ULTRAVISTA
NMBS
Star-forming
Quiescent
NMBS (NEWFIRM) Whitaker+2011
ULTRAVISTA Muzzin+2013
Stellar Mass Functions
ZFOURGE
+ CANDELS F160W
+ NMBS Adam Tomczak
(TAMU), 2014, ApJ
Star-forming
Quiescent
zfourge.tamu.edu
Stellar Mass Functions
ZFOURGE + CANDELS F160W + NMBS Adam Tomczak (TAMU) et al. 2014, ApJ
ZFOURGE Survey
ZFOURGE + CANDELS F160W + NMBS Adam Tomczak (TAMU)
ZFOURGE Survey
Star Formation Rates How quickly do galaxies assemble their stars ?
Tracking Star Formation
Colors (rest-frame optical)
Spectral Emission (rest-frame optical)
Mid-Infrared Emission
z~2
MOSDEF
KMOS
ZFIRE
Star Formation vs. Stellar Mass
ZFOURGE + Spitzer +
Herschel Adam Tomczak
(TAMU), in prep
also Whitaker+14
Salim+07
Mid-IR
GOODS (Dickinson)
S-COSMOS (Sanders)
SpUDS (Dunlop)
GOODS-H (Elbaz)
CANDELS-H (Dickinson)
SF vs. Mass vs. Redshift
ZFOURGE + Spitzer + Herschel Adam Tomczak (TAMU), in prep
ZFOURGE Survey
Connection between Star Formation and AGN ?
ZFOURGE Radio AGN
Quiescent Hosts @z<1
Star-Forming Hosts @ z>1.5
12.0
log(Stellar Mass) [M ]
11.5
11.0
10.5
MHalo = 1012.0
10.0
9.5
Ks-band selected
High-luminosity radio-AGN with quiescent hosts
High-luminosity radio-AGN with star-forming hosts
Low-luminosity radio-AGN with quiescent hosts
Low-luminosity radio-AGN with star-forming hosts
9.0
8.5
0.5
1.0
1.5
2.0
Zphot
Glen Rees (Macquarie), Spitler, et al.
ZFOURGE AGN
X-ray, Radio, & IR selected AGN: Hosts have higher SSFR
−7
0.2
0.8 < z < 0.8
1.8
Hosts
trol Sample
0.8
1.8< <z z< <1.8
3.2
AGN Hosts
Control Sample
log(sSFR/yr-1)
−8
−9
−10
−11
ΔsSFR −12
21 dex
11.0
−13
9.5
−12 −10 −8
Log sSFR [yr-1]
10.0
ΔsSFR
~0.21
~0.42 dex
10.5
11.0
log (M/M )
−12
−12 −10
−10 −8
−8
-1]]
Log
Log sSFR
sSFR [yr
[yr-1
9.5
9.5
10.0
10.0
ΔsSFR
ΔsSFR
~0.42
~0.35 dex
dex
10.5
10.5
11.0
11.0
log
log (M/M
(M/M ))
−
L
11.5
9.5
Michael Cowley (Macquarie), Spitler, et al.
ZFOURGE Survey
How does the Milky Way form ?
Where most stars are in the Universe
Milky Way Progenitor
ZFOURGE + CANDELS Papovich (TAMU) et al. 2015, ApJ
Milky Way Progenitor
Papovich+2015
ZFOURGE Survey
Any galaxies at z>7 ?
Ly
ZFOURGE LBGs @z~7
Vithal (TAMU) et al., 2013 ApJ
ZFOURGE Large Scale Structure
Millenium Simulation Mock : 1.95<z<2.05
Kitzbichler & White 2006
True Redshift
z
= 0.02(1 + z)
z
= 0.1(1 + z)
ZFOURGE Large Scale Structure
optical
bright NIR
Yuan+2014, ApJ Letters; Spitler+2012, ApJ Letters
ZFOURGE Galaxy Cluster @z=2.1
ZFOURGE + MOSFIRE
Tran/Glazebrook/Kewley
Spectroscopy of Galaxy Clusters @z~2
see talks by Yuan & Kacprzak (Thursday)
SED Composites: From Imaging !
ZFOURGE: >5000 galaxies at 0.5<z<3.0 (see Kriek+2011)
Ben Forrest (TAMU), Josha van Houdt (Leiden) Tran, Labbé, Kriek
UV to IR
Spitzer + Herschel
ZFOURGE Survey
Lots of interesting results, more to come in 2015 ! - Sizes of massive quiescent galaxies at z~4 (Straatman)
- Star formation histories since z~3 (Tomczak)
- ZFOURGE survey paper (Straatman & Labbé)
- AGN host galaxies (Rees, Cowley)
- Sizes of cluster galaxies at z~2 (Allen)
- Satellite galaxies at 1<z<3 (Kawinwanichakij)
- Composite SEDs for 1<z<3 (Forrest, van Houdt)
zfourge.tamu.edu
Thanks Observatories !
Keck
Spitzer
Hubble
Magellan
Herschel
Thank you public & legacy surveys !
ZFOURGE Summary
- Stellar Mass Functions for 0<z<3
- Star Formation Histories at 0<z<4
- AGN Hosts at 0.5<z<4
- Milky Way Progenitor at 0<z<3
- Lyman Break Galaxies at z~7
- SED Composites (Library) at z>1
… More to come !
−7
0.2 < z < 0.8
0.8 < z < 1.8
1.8 < z < 3.2
AGN Hosts
Control Sample
log(sSFR/yr-1)
−8
−9
−10
−11
−12
−12 −10 −8
Log sSFR [yr-1]
−13
9.5
10.0
ΔsSFR
~0.21 dex
10.5
11.0
log (M/M )
zfourge.tamu.edu
−12 −10 −8
Log sSFR [yr-1]
9.5
10.0
ΔsSFR
~0.42 dex
10.5
11.0
log (M/M )
−12 −10 −8
Log sSFR [yr-1]
9.5
10.0
ΔsSFR
~0.35 dex
10.5
11.0
log (M/M )
11.5