1.4 GHz Source Counts (Hopkins 2000)

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1.4 GHz Source Counts (Hopkins 2000)
AGN
steep flat
starbursts
spirals
SKA EVLA HDF/COSMOS 1st/NVSS
Cambridge
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1.4 GHz uJy source counts (Schinnerer et al. 04)
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COSMOS Pilot/ACS (Schinnerer 04)
1.4 GHz, 1.5, 25uJy rms I_AB(5s) 27
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VLA-COSMOS vs. HST morphologies
z 0.2
z 0.2
z 1.3
z 1.0
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Optical mags of uJy radio sources (Richards 99)
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Optical IDs and redshifts of uJy radio sources
(Haarsma 00)
Ellipticals/emission line
unclear
Faint/red
Spiral/Irr/merging

1. 50 spirals/Irr/mergers star forming galaxies
   at zlt1.3
2. 25 ellipticals/liners low luminosity AGN at
   z 0.3 to 1.5
3. 25 optically faint/red high z starbursts?
   very high z AGN?

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Properties of optically bright (Ilt23.5) uJy radio
sources (Chapman 02)
ltM_Igt -22.5/-1.5
I23.5 (spiral)
ULIRGs/AGN
LIRGs
spirals
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Spectral index distribution uJy radio sources
(8GHz selected Fomalont 02)
ltSIgt -0.75
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Angular two-point correlation function from
Pheonix survey (Georgakakis99)
2
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Relation to (sub)mm galaxies (Barger, Chapman,
Blain, Dannerbauer,)
30-40 of Igt24, uJy radio sources S_850 gt
6mJy 70 of total submm gal population
(other sources?)
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Radio photometric redshifts
55K gt z4.1 65K gt z5.1
Temperature redshift degeneracy measure
(1z)/T_D (Blain 1999)
Photometric redshifts for NTTDF MAMBO sources
radio vs. optical (Dannerbauer)
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Radio photometric redshifts uJy radio sources
(Chapman 02)
30K
T_D50K
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Radio-FIR correlation SDSS galaxies (Yun 02)
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Redshift evolution of radio-FIR correlation
Spitzer First Look survey (Appleton 04)
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Radio-FIR correlation into the epoch of
reionization
z4.12
z 6.42 T_D50K
z 4.7, 4.4
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Radio-FIR correlation CMB inverse Compton losses?
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uJy radio source sizes COSMOS pilot project
(Schinnerer04) VLA only 1.4 res
Test sources only upper limits of 1
deconvolved
Gaussian fit
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Submm galaxy sizes MERLIN/VLA/HST (0.3 res)
2/3 1 1/3 lt 0.3
3
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VLBA
2 1.4 GHz
0.2res
0.02 res
Ly a CO 2-1
1202-0725 z4.7 QSOstarburst (Momjian04)
Size0.2 (1kpc) T_B 1e5 K gt starburst
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Submm galaxies and radio astrometry (Smail 99)
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COSMOS - Project Outline

• 1.4 deg x 1.4 deg field _at_ 100028.6 021221
  
• Major themes
• Assembly of galaxies, clusters dark matter
• on scales up to 2 x 1014 Msun
• Reconstruction of dark matter distribution out
  to z 1
• using weak lensing
• Evolution of galaxy morphology, galactic merging
  and
• star formation as a function of LSS redshift
  
• Evolution of AGN/dependence of black hole growth
• on galaxy morpholgy and environment

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VLA-COSMOS - Large Project

• 16,000 x 16,000
• pixels
• 0.34/pixel
• 10/40 days
• quick-look
• rms 19mJy/beam

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VLA/Cosmos 2deg survey
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(No Transcript)
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mJy radio sources an update Ringmerg04 C.
Carilli, NRAO

• Four types of radio surveys (all 1.4 GHz)
• Very, very wide field, shallow NVSS 1mJy,
  60, full sky FIRST 1 mJy, 5, ¼ sky gt
  mostly AGN
• Very wide fields, moderate depth Spitzer 1st
  look 0.1mJy, 5, 10 deg2
• Wide field, deep COSMOS 0.04 mJy, 1.4, 2
  deg2 gt star forming gals zlt1
• Narrow field, very deep many 0.02 mJy, 1.4,
  0.2 deg2
• Relevance of mJy radio sources
• Reveals dust obscured galaxy formation, and type
  II AGN (to very high redshift)
• Complementary to submm (mostly lower z), plus
  possible proxy at higher z
• provides sub-arcsec astrometry, imaging
• evolution of radio-FIR correlation physics of
  star forming galaxies (B, CRs)
• radio photometric redshifts