1. Panoramic near-Infrared Astronomy A first look at the UKIDSS data Steve Warren UKIDSS Survey Scientist with Steve Weatherley (Deteca Ltd), Paul Hewett (Cambridge) 1.UKIDSS design 2.First data 3.Survey timetable 4.Summary

2. Panoramic near-Infrared Astronomy 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,H 2 -S(1),Br-g 1 deg 2 K=19.5 / hr (5sig)

3. Panoramic near-Infrared Astronomy 1. UKIDSS design Near-infrared explores the cool, the dust-obscured, and the high-redshift universe

4. Panoramic near-Infrared Astronomy 1. UKIDSS design 5 elements of UKIDSS Large Area SurveyLASYJHK18.4K4000 s.d.262nExGal Deep Extragalactic SurveyDXSJK21.035118ExGal Ultra Deep SurveyUDSJHK23.00.77296ExGal Galactic Plane SurveyGPSJHK19.01800186Gal Galactic Clusters SurveyGCSZYJHK18.7160084Gal

5. Panoramic near-Infrared Astronomy 1. UKIDSS design Large Area SurveySDSS near-ir photom, Y dwarfs, z=7 quasars Deep Extragalactic SurveyMultiwavelength fields, the Universe at 1<z<1.5, FMOS spec Ultra Deep SurveyMultiwavelength field SXDS, the Universe at z=3 Galactic Plane SurveyGalactic-plane atlas -5<b<+5 Galactic Clusters SurveyUniversality of the stellar IMF

6. Panoramic near-Infrared Astronomy 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

7. Panoramic near-Infrared Astronomy 1. UKIDSS design ESO public survey 1000 nights UKIRT over 7yrs UKIDSS = 100 X 2MASS near-ir SDSS began 2005 May 13 surveyP/P 2MASS V/V 2MASS LAS297.0 GPS407.2 GCS183.7 DXS312.2 UDS350.8 total15320.9

8. Panoramic near-Infrared Astronomy 1. UKIDSS design Project 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

9. Panoramic near-Infrared Astronomy 2. First data 2MASS

10. Panoramic near-Infrared Astronomy 2. First data

11. Panoramic near-Infrared Astronomy 2. First data BandTarget depth 40s Vega 5sigma Achieved depth 40s Vega 5sigma K18.418.24+/-0.29 H18.818.97+/-0.18 J19.619.60+/-0.20 Y20.520.10+/-0.28 Z20.25+/-0.26

12. Panoramic near-Infrared Astronomy 2. First data: GCS (Lodieu, Deacon), GPS IC4665, 6.5deg 2 M17 2MASS UKIDSS extinction map (Hoare, Gaspar)

13. Panoramic near-Infrared Astronomy 2. First data: DXS (Edge) Partial stack ELAIS-N1 Eduardo Gonzales-Solares

14. Panoramic near-Infrared Astronomy 2. First data: DXS (Edge) Match to SWIRE data Eduardo Gonzales-Solares

15. Panoramic near-Infrared Astronomy 2. First data: UDS (Almaini) 50 arcmin K=23 K=20.8

16. Panoramic near-Infrared Astronomy 2. First data: LAS SDSS redshift distribution Warren, Hewett, and Foltz, 2000 UKIDSS SV 10 deg 2 Large KX survey, K<16, unbiased by intrinsic or intervening obscuration

17. Panoramic near-Infrared Astronomy 2. First data: LAS SDSS limit z=6.4

18. Panoramic near-Infrared Astronomy 3. Survey timetable 2005 Dec: end SV 2006 Jan 31: DR1 to ESO 2006 Jun 1: DR2 to ESO? 2006 Nov: renewal proposal to UKIRT Board 2007 Jun 31: DR1 to world 2007 Mar 31: end 2-yr plan observations 2012 completion

19. Panoramic near-Infrared Astronomy 4. Summary WFCAM is the world’s best near-ir survey camera WFCAM pipeline and archive are producing science quality data UKIDSS design depths achieved in JHK, 0.4mag. short in Y 10% of UKIDSS has been observed 3% of UKIDSS (=3X2MASS) will be released 2006 Jan 31