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A first look at the UKIDSS data

A first look at the UKIDSS data. Steve Warren UKIDSS Survey Scientist with Steve Weatherley (Deteca Ltd), Paul Hewett (Cambridge). UKIDSS design First data Survey timetable Summary. 1. UKIDSS design. 4x2048x2048 Hawaii II arrays 0.4 arcsec pixels 0.21 sq.degs / exposure

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A first look at the UKIDSS data

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

  2. 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) Panoramic near-Infrared Astronomy

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

  4. 1. UKIDSS design5 elements of UKIDSS Panoramic near-Infrared Astronomy

  5. 1. UKIDSS design Panoramic near-Infrared Astronomy

  6. Hewett, Warren, Leggett, Hodgkin, 2006, MNRAS, submitted, `The UKIDSS ZYJHK photometric system’ M L T (Y) Jup T(K) >2200 2200-1300 1200-400? (?400-150) 150 SDSS, 2MASS limit T=700K Panoramic near-Infrared Astronomy

  7. 1. UKIDSS design • ESO public survey • 1000 nights UKIRT over 7yrs • UKIDSS = 100 X 2MASS • near-ir SDSS • began 2005 May 13 Panoramic near-Infrared Astronomy

  8. 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 Panoramic near-Infrared Astronomy

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

  10. 2. First data Panoramic near-Infrared Astronomy

  11. 2. First data Panoramic near-Infrared Astronomy

  12. 2. First data: GCS (Lodieu, Deacon), GPS UKIDSS extinction map (Hoare, Gaspar) M17 2MASS IC4665, 6.5deg2 Panoramic near-Infrared Astronomy

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

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

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

  16. 2. First data: LAS UKIDSS SV 10 deg2 Large KX survey, K<16, unbiased by intrinsic or intervening obscuration SDSS redshift distribution Warren, Hewett, and Foltz, 2000 Panoramic near-Infrared Astronomy

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

  18. 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 Panoramic near-Infrared Astronomy

  19. 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 Panoramic near-Infrared Astronomy

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