Numerical Simulation of the Sub-Mm Galaxies

Details Numerical Simulation of the Sub-Mm Galaxies Numerical Simulation of the Sub-Mm Galaxies

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dms..conf..191f&link_type=abstract

DEEP MILLIMETER SURVEYS Implications for Galaxy Formation and Evolution. Held 19-21 June 2000 in University of Massachusetts, Am

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the sub-millimeter emission from massive galaxies in an N-body/hydro simulation. Assuming that most of the emission from newly formed stars is absorbed and reradiated in the rest infrared, we can calculate the expected number of galaxies detected in sub-mm surveys conducted with SCUBA. The number counts are strongly dependent on the assumed emission model. Assuming plausible values for the dust temperature and emissivity, we reproduce the counts at ~ 3 mJy, though the counts may be somewhat steeper than observed. The broad distribution of the simulated galaxies around a median redshift of z ≈ 2.5 is in agreement with current observations. The simulated SCUBA sources are forming stars fairly steadily, and their properties agree with the notion that they are progenitors of massive ellipticals.

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