Magic%20of%20(sub)mm

1
Magic of (sub)mm
L_FIR 1.5e12 L_sun
3mJy

• Distance independent probe of universe
• Biased to gt ULIRGs

2
Submm surveys Probing the epoch of galaxy
formation (z1.5 3.5)
SCUBA 20mJy
Optical Gal
Submm Gal
Comparable SFR at high z in dusty starbursts
(submm gal) as optically selected galaxies,
forming giant elliptical galaxies?
SMA/Spitzer
3
COSMOS/MAMBO 250 GHz survey dusty galaxy
formation

• MAMBO/30m
• 117 pixels
• 250 GHz
• 10.6
• 0.9 mJy rms
• 20 x 20
• Goals
• z distribution contribution SFHU
• Environments
• AGN fraction
• highest z starbursts?
• evol radio-FIR

Bertoldi, Carilli, Schinnerer, Voss, Smolcic
4
Latest counts including COSBO scaled to 350 GHz
assuming T_D 40 K
PL Index-2.7
COSMOS 14 srcs gt4s 23 srcs gt 3.5s
7mJy 1e13 L_sun
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COSMOS Immediate Gratification
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• Radio MAMBO gt 4s 9/14 (lt4)
• Radio MAMBO gt 3.5s 2/9
• Optical Radio MAMBO 6-9/23 (lt1)
• MAMBO Xray 2/23
• Complex morphology multiple radio 4/14
• Complex MAMBO 5/14

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Redshift Distribution
Opt photo
Submm gal
Radio photo (limits)
Radio photo (det)

• Lensing 1 or 2
• Spurious 1 or 2

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Difficulties with redshifts templates and
ambiguities
Optical phot z
20K
Z_rad
Z_opt (1,2)
60K
Radio phot z (1z) \propto T_D
Z_rad, Z_opt(2)
Z_opt (1)
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COSBO 7 Z_rad 3.3 Z_opt 0.45
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Radio and opt faint submm galaxies (10-20)
highest z (gt 3) starbursts (4 secure srcs)?
COSBO 1 brightest mm source 250 GHz 6.3/-0.9
mJy 1.4 GHz 31 /- 10 uJy HST I gt 27
K_vega gt 19.7 Z gt 3.3 ?
COSBO 9 250 GHz 4.9 /-0.9 1.4 GHz lt 36 uJy
HST I gt 27 K_vega gt 19.7 Z gt 3.7 ?
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COSBO

• 2005/6 90hr
• Spitzer
• Spectroscopy

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END
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UV selected galaxies large range in bolometric
luminosity, but little correlation of L_uv and
L_bol
Adelberger 2000