Influence of thermodynamical processes on the galaxy mass function

Details Influence of thermodynamical processes on the galaxy mass function Influence of thermodynamical processes on the galaxy mass function

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf...83c&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

Scientific paper

We compute the galaxy mass function using numerical simulations of large scale structure formation. We use an eulerian hydrodynamical/N-Body code including radiative cooling, galaxy formation and thermal non-equipartition processes between the species electrons, neutrals and ions. We show that galaxy-like object mass function at z=0 is fitted by a double power law Schechter function whose slopes are very close to the ones obtained by fitting the observed galaxy luminosity function. We point out that non-equipartition processes modify the mass function at high redshift and for low mass galaxy-like object.

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