SWIRE Imaging & Spectroscopic Follow-up

Extreme Starbursts, LiJiang China 1

SIRTF Wide-area InfraRed Extragalactic Legacy Survey SWIRE

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SWIREImaging & Spectroscopic Follow-up

Gene SmithCASS/UCSD

T. Jarrett et al. in press

18 August 2005 Extreme Starbursts; LiJiang China 2

SIRTF Wide-area InfraRed Extragalactic Survey SWIRE

Optical Imaging

• Baseline Optical/NIR Imaging, Lockman & CDFS • g'=25, r'=24.5, i'=24: Lockman 7/11 sq deg; CDFS 4/8 sq deg (also U & some z')

• B. Siana, T. Babbedge, M. Fox, E. Gonzalez-Solares, M. Irwin

• Deep Fields - 0.4 sq deg in Lockman & CDFS• U~25, g'=26, r'=25.5, i'=25• K' ~ 20.5 (Palomar WIRC: Stacey/Siana; LCO WIRC Siana/Polletta/McCarthy)

• INT WFS: EN1 & EN2•U=23.3, g'=24.7, r'=23.8, i'=23.0, Z=21.7: EN1 6.5/9 sq deg

• ISLES (Oliver, Gonzalez-Solares, Salaman) EN1, Lockman•r'=23.8/Deep r'=24.2

•ESIS: ES1 (Berta, Franceschini et al.)•WFI: B=25.7, V=25.6, R=25.0 VIMOS: I,z ES1 5/6 sq deg•J=22;K=20 1 sq deg (Ciliegi et al.)

• XMM-LSS: CFHTLS Megacam (VVDS/XMM-LSS)



Lockman Field

Lockman Deep VLA/Optical/X-Ray(VLA r ~ 30’; X-Ray 0.6+ sq deg)

Lockman Existing Multi-band (~ 71/2 sq deg)

SWIRE Lockman Field11 sq deg

ISLES r’-band (23.8) covers remainder to South

U g’ r’ i’ Ks

0.4sq deg 26.0(1.2) 25.9 25.5 24.8 20.5 7 sq deg 25.0 24.5 23.9



CDFS

U g’ r’ i’ z Ks

0.4 26.7 26.0 25.6 24.8 20.5 (1.4) 4 25.0 25.0 24.6 23.9 23.0(2)

Chandra Field

ESO Deep Survey

SWIRE Deep Imaging



ELAIS N1/2 WFS



Optical Imaging - The Bad News……..

3.6 and 24m source completeness requires V ~ 28

XMM-LSS-Suburu (SXDS) Cross-Ids

3.6 24



Specctroscopic SurveysInstrument PI Date Nights Depth Area <z> Fields N Status

IN PROGRESS

2dF TISWAZ Oliver 2004/5 4/18.5 R=20 4 sq deg Southern 1000 In Progress

GMOS Smith 2004A 2/4 r’<24 ~1 Lockman 100 Complete?

GMOS MRR 2005A 5 r’<23.5 18 masks EN1 180? Observed

Keck I LRIS Smith 2004/5 2/4 r’<24.5 9 masks Lockman 180 In Progress

Pal COSMIC Lonsdale 2004/5 3/8 r’<22.5 Lockman 130 Complete

WIYN/Hydra Morrison 2004 3/5 r’<21.5 1 sq deg 0.3 Lockman 300 Complete

WIYN/Hydra Nandra 2005 2/5 r’<22

VVDS LeFevre I<24 XMM 3120 Complete

VLT/VIMOS LaFranca 2004/5 3+3 R<24 ES1 1000+ In Progress



XMM-LSS TISWAZ

2dF “TISWAZ” redshift surveyPI - S. Oliver, SussexR<21 galaxies in SWIRE SH fields w/2dF: ES1, CDFS, XMM-LSS ~1000 redshifts

To be replaced by survey with AAOmega



Keck/Gemini Spectroscopy

2004 campaign

z dist’n Most are from

[OII] 3727

#

redshift1.0 2.0 3.0



Keck/Gemini Spectroscopy

z ~ 3.5

All high-z objects are AGN-1

L/NV

CIV



Photo-z’s

IRAC MIPS

Polletta et al 2005

r

Stars

Dust

~2.4 million galaxies in SWIRE ==> Photo-z’s are essential:

M. Rowan-Robinson/T. Babbedge

(Imperial) IMP-z

–Detection in 3.6m IRAC & r'/R

–Min 4-band detection:

Ug'r'i'z 3.6 4.5S. Oliver (Sussex) ANN-zVVDS (Arnouts) LePhareM. Polletta (UCSD) Source characterization

Hyper-z



Photo-z’s in Lockman Deep

IMP-z photo-z code

--------- indicate 0.1 in log(1+z)

Some outliers are moving into envelope (i.e. we are using photo-z to correct spectroscopic redshifts)



XMM-LSS XMM-LSS

VIRMOS FIELD

SHADES CDFS

Deep XMM



VVDS 3.6 & 24m

3120 galaxies3.6mI < 24.0

218 galaxies 14 QSOs24mI < 24.0



Photo-z’s for VVDS

IMP-z photo-z code

--------- indicate 0.1 in log(1+z)

• Galaxies AGN



B. Siana-SWIRE z=3 QSO Luminosity Fn

Siana/SWIRE (102 QSO;

r '< 22)

SDSS

Warren et al. (86)

Hunt et al. (11)102 QSOs selected by Lyman-

break (U-dropout)plus IRAC1-2 Color

2.7 < z < 3.511 sq deg in SWIRE EN1/EN2

fieldsStill to come: 28 sq deg z ~ 4 (g '-dropout) QSOLF



Babbedge et al. 2005 in prep

• Quasars with redshift–LFs are constructed in the redshift bins –[0 to 1]

–[1 to 2] –[2 to 3] –[3 to 4]

QSO Evolution



• Using photo-z–redshift bins –[0 to 0.25] –[0.25 to 0.5] –[0.5 to 1] –[1 to 1.5]–[1.5 to 2]

• Split by type–Split by optical SEDtemplate,

into three sub-classes; Ellipticals, ‘Spirals’ (Sab, Sbc, Scd and Sdm), and Starbursts

Babbedge et al. 2005 in prep

24 micron galaxy Luminosity Function



Future Efforts

Imaging:VST-Census: PI: S. Oliver - Deeper imaging in SWIRE CDFS & ES1

Under review.

UKIDSS: 3 x 7.5 sq deg in Lockman, EN1, XMMLSS to J=22, K=21

In progress.

Spectroscopy:

AAOMEGA: PI S. Oliver - Spectroscopy to r’~23 over ? sq deg

FMOS: Subaru Fiber fed NIR Spectrograph to H~20; z > 1





Photometric redshifts: IMP-z

• IMPz (Babbedge et al 2004) colour-tables, which incorporate • (1) integration over filter transmission functions, • (2) correct treatment of IGM, •(3) Berta synthetic seds fitted to Rowan-Robinson (2003) empirical templates

• double-pass to cope with AGN dust tori: Pass 1: don’t use 3.6, 4.5 mu if S(3.6)/Sr > 3

- then fit ir templates to sources with ir excess at 4.5-160 muPass 2: use 3.6, 4.5 mu provided S(3.6)/Sr <300, unless IR template fit identified source as being dominated by torus

• parabolic interpolation of redshift fit to improve accuracy • AV,max = 1.0, MB limits as in RR(2003), minimum errors set in UgriZ,3.6,4.5 = 0.10, 0.03, 0.03, 0.03, 0.10 m., 2.5,4 muJy



Survey Fields

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SWIRE Imaging & Spectroscopic Follow-up