Galaxy formation in a model with cosmological dust

Details Galaxy formation in a model with cosmological dust Galaxy formation in a model with cosmological dust

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993arep...37..223g&link_type=abstract

Astronomy Reports, Volume 37, Issue 3, May 1993, pp.223-227

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the evolution of a protogalactic cloud at red shifts z = 4-5 in the presence of primordial ice dust that was formed at z ~> 30. We show that a dust component with density in {OMEGA}_d_~ (1-2) x 10^-5^- has little effect on thermodynamic processes in the gaseous medium heated by a shock. At the same time, by absorbing thermal energy from the hot gas, the dust can be heated to T ~ 50 K, which results in infrared emission from the protogalaxy with a maximum at the wavelength λ ~ 3 x 10^-2^ cm and an integrated luminosity L ~ 3 x 10^23^M_gal_/M_sun_ erg/sec.

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