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The VLA 1.4 GHz Survey of the COSMOS Field (Outlook)

The VLA 1.4 GHz Survey of the COSMOS Field (Outlook). Eva Schinnerer (MPIA) Chris Carilli (NRAO),Nick Scoville (Caltech) VLA-COSMOS team, COSMOS collaboration. VLA-COSMOS Team. Eva Schinnerer, MPIA (PI) Chris Carilli, NRAO     Vernesa Smolcic, MPIA

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The VLA 1.4 GHz Survey of the COSMOS Field (Outlook)

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  1. The VLA 1.4 GHz Survey of the COSMOS Field (Outlook) Eva Schinnerer (MPIA) Chris Carilli (NRAO),Nick Scoville (Caltech) VLA-COSMOS team, COSMOS collaboration

  2. VLA-COSMOS Team Eva Schinnerer, MPIA (PI) Chris Carilli, NRAO     Vernesa Smolcic, MPIA Nick Scoville, CalTech Frank Bertoldi, RAIUB Andrew Blain, CalTech Marco Bondi, IRA/CNR Paolo Ciliegi, INAF Chris Impey, UArizona Anton Koekemoer, STScI Olivier Le Fevre, LAM C. Megan Urry, Yale Paolo Vettolani, INAF

  3. VLA-COSMOS - Project Outline 1.4 GHz imaging of a 1.4 deg x 1.4 deg field @ 10:00:28.6 +02:12:21 Major themes: • (dust-)obscured cosmic star formation history • evolution of the IR-radio correlation • evolution of low luminosity radio AGN to high z • search for time-variable radio sources • serendipity sources • absolute astrometry for COSMOS field http://www.mpia.de/homes/schinner/cosmos/cosmos.html

  4. VLA-COSMOS - Observations NRAO Very Large Array VLA Large Project A configuration: 10hr pilot project: 246 sources (Schinnerer, Carilli, Scoville et al. 2004) ~ 0.8 sqrdeg; rms ~ 25 mJy/beam; ~ 1.8” 7 pointings 240hr large project: ~ 4,500 sources (underway) ~ 2 sqrdeg; rms ~ 8-10 mJy/beam; ~ 1.6” 23 pointings last observation on Jan 9th, 2005 (40 days total) + 24hr C configuration for missing short spacings scheduled for May - August 2005

  5. COSMOS - Field Size VLA primary beam 1.4 degree

  6. VLA-COSMOS - Pilot Project Jackson (2004) % of SF galaxies? Schinnerer et al. (2004) Schinnerer et al. (2004)

  7. VLA-COSMOS - Large Project 2x 4x 16x 8x 16,000 x 16,000 pixels 0.34”/pixel 20/40 days quick-look rms ~ 14mJy/beam

  8. VLA-COSMOS vs. HST morphologies 2” 2” 2” 2” z ~ 0.2 z ~ 0.2 z ~ 1.0 z ~ 1.3

  9. VLA-COSMOS - AGN & Radio Galaxies 1.4 GHz VLA Subaru i’ band XMM contours Radio identified Forming cluster At z ~ 0.3 Smolcic, Schinnerer, Carilli et al. 2005

  10. VLA-COSMOS - Major Features equatorial field (accessible for e.g. ALMA & EVLA, Keck & VLTs) full wavelength coverage: X-ray --> radio imaging & spectroscopy survey avoids bright sources (in radio) ==> allows for full census of faint radio population

  11. VLA-COSMOS - Summary • Observations: -1.4 GHz VLA A-array finished - 1.4 GHz VLA C-array spring/summer ‘05 - reduction underway • Data Archive: - currently: VLA-COSMOS pilot data - A-array data: release early ‘06 • Science: - star formation history - evolution of AGN (radio galaxies) - evolution of radio-IR correlation

  12. VLA-COSMOS vs. Phoenix Deep Survey COSMOS: PDS: # of sources ~ 4,500 ~ 2,000 Resolution 1.7”x1.5” 12”x6” Min. rms ~ 10 mJy ~ 10 mJy Total area 1.96 deg2 4.56 deg2 Area (<20uJy) 1.6 deg2 0.9 deg2 cosmos PDS Hopkins et al. (2003)

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