panoramic near-infrared astronomy a first look at the ukidss data steve warren ukidss survey...

Panoramic near-Infrared Astronomy

A first look at the UKIDSS dataSteve Warren UKIDSS Survey Scientistwith Steve Weatherley (Deteca Ltd), Paul Hewett (Cambridge)

1. UKIDSS design2. First data3. Survey timetable4. Summary


1. UKIDSS design

4x2048x2048 Hawaii II arrays

0.4 arcsec pixels 0.21 sq.degs / exposure 2x2 microstep to sample 2x2 macrostep to tile Filters: Z,Y,J,H,K,H2-

S(1),Br-g 1 deg2 K=19.5 / hr (5sig)


1. UKIDSS design

Near-infrared explores the cool, the dust-obscured,and the high-redshift universe


1. UKIDSS design5 elements of UKIDSS Large Area Survey LA

SYJHK 18.4

K4000 s.d.

262n

ExGal

Deep Extragalactic Survey

DXS

JK 21.0 35 118 ExGal

Ultra Deep Survey UDS

JHK 23.0 0.77 296 ExGal

Galactic Plane Survey

GPS

JHK 19.0 1800 186 Gal

Galactic Clusters Survey

GCS

ZYJHK

18.7 1600 84 Gal


1. UKIDSS design

Large Area Survey SDSS near-ir photom, Y dwarfs, z=7 quasars

Deep Extragalactic Survey Multiwavelength fields, the Universe at 1<z<1.5, FMOS spec

Ultra Deep Survey Multiwavelength field SXDS, the Universe at z=3

Galactic Plane Survey Galactic-plane atlas -5<b<+5

Galactic Clusters Survey Universality of the stellar IMF


Hewett, Warren, Leggett, Hodgkin, 2006, MNRAS, submitted, `The UKIDSS ZYJHK photometric system’

M L T (Y) Jup

SDSS, 2MASS limit T=700K

T(K) >2200 2200-1300 1200-400? (?400-150) 150


1. UKIDSS design ESO public survey

1000 nights UKIRT over 7yrs

UKIDSS = 100 X 2MASS

near-ir SDSS

began 2005 May 13

survey P/P2MASS V/V2MASS

LAS 29 7.0

GPS 40 7.2

GCS 18 3.7

DXS 31 2.2

UDS 35 0.8

total 153 20.9


1. UKIDSS designProject structure: 4 separate elements

1. WFCAM Built by ATC for JAC UKIRT facility instrument

2. Pipeline Built at Cambridge (CASU, Mike Irwin) Operates on all WFCAM PATT progs Responsible for calibration

3. Archive Built at Edinburgh (WFAU, Nigel Hambly) Archives all WFCAM data, with special status for

UKIDSS 4. UKIDSS

Designs and obtains approval for surveys Science input to pipeline and archive design Undertakes the observing, with JAC Science verification Forum for science exploitation No proprietary access


2. First data2MASS

2MASS


2. First data


2. First data

Band Target depth 40sVega 5sigma

Achieved depth 40sVega 5sigma

K 18.4 18.24+/-0.29

H 18.8 18.97+/-0.18

J 19.6 19.60+/-0.20

Y 20.5 20.10+/-0.28

Z 20.25+/-0.26


2. First data: GCS (Lodieu, Deacon), GPS

IC4665, 6.5deg2

M17 2MASS

UKIDSS extinction map (Hoare, Gaspar)


2. First data: DXS (Edge)

Partial stack ELAIS-N1Eduardo Gonzales-Solares


2. First data: DXS (Edge)

Match to SWIRE dataEduardo Gonzales-Solares


2. First data: UDS (Almaini)

50 arcmin K=23 K=20.8


2. First data: LAS

SDSS redshift distribution

Warren, Hewett, and Foltz, 2000

UKIDSS SV 10 deg2

Large KX survey, K<16, unbiasedby intrinsic or intervening obscuration


2. First data: LAS

SDSS limit z=6.4


3. Survey timetable

2005 Dec: end SV2006 Jan 31: DR1 to ESO2006 Jun 1: DR2 to ESO?2006 Nov: renewal proposal to UKIRT Board2007 Jun 31: DR1 to world2007 Mar 31: end 2-yr plan observations2012 completion


4. Summary

WFCAM is the world’s best near-ir survey cameraWFCAM pipeline and archive are producing science quality dataUKIDSS design depths achieved in JHK, 0.4mag. short in Y10% of UKIDSS has been observed3% of UKIDSS (=3X2MASS) will be released 2006 Jan 31

panoramic near-infrared astronomy a first look at the ukidss data steve warren ukidss survey...

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