www.dark-cosmology.dk/~pela

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Dust in Young Galaxies
IAP Ly? workshop 2007, Paris
DARK Cosmology Centre Niels Bohr Institutet
Københavns Universitet
www.dark-cosmology.dk/pela
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Motivation
Surface brightness map
Surface brightness profile
Fynbo et al. (2003)
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Lyman a
Cooling radiation (10)
Stellar sources (90)
Metagalactic field (1)
? Young galaxies should be visible
(Partridge Peebles, 1967)
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Analytical models
Osterbrock (1962) Harrington (1973) Neufeld (1990)
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Analytical models
Dijkstra (2006)
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Reality
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Numerical models
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Cosmological simulations
The movie
Sommer-Larsen et al. (2003) Sommer-Larsen (2006)
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Monte Carlo
L,T,nHI ,vbulk ,Z
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Monte Carlo
Emit photon
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Monte Carlo
Emit photon
?
Determine t
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Monte Carlo
Emit photon
?
Determine t
?
Determine uatom
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Monte Carlo
Emit photon
?
Determine t
?
Determine uatom
?
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Radiative transfer
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Observations
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Surface brightness maps
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Surface brightness profiles
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Spectra
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Significance of the velocity field
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Fitting a Neufeld profile
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Dust
AGBs e.g., Draine (2003)
SNe e.g., Sugerman et al. (2006)
QSOs e.g., Elvis, Marengo, Karovska (2002)
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Adaptive Mesh Refinement
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Adaptive Mesh Refinement
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Metals
He, C, N, O, Ca, Si, S, Fe at different
ionization levels
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Properties of dust
n
?, P(?,?)
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Properties of dust
n
?, P(?,?)
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Properties of dust
n
?, P(?,?)
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Properties of dust
n
?, P(?,?)
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Properties of dust
n
?, P(?,?)
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Properties of dust
Laboratory experiments
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Properties of dust
Laboratory experiments