%0 Generic %1 Durier2011 %A Durier, Fabrice %A Pacheco, Jose Antonio de Freitas %D 2011 %K baryon distribution evolution %T The Evolution of the Baryon Distribution in the Universe from Cosmological Simulations %U http://arxiv.org/abs/1111.2059 %X The evolution of the baryon distribution in different phases, derived from cosmological simulations, are here reported. These computations indicate that presently most of baryons are in a warm-hot intergalactic (WHIM) medium (about 43%) while at z = 2.5 most of baryons constitute the diffuse medium (about 74%). Stars and the cold gas in galaxies represent only 14% of the baryons at z = 0. For z < 4 about a half of the metals are locked into stars while the fraction present in the WHIM and in the diffuse medium increases with a decreasing redshift. In the redshift range 0 < z < 2.5, the amount of metals in the WHIM increases from 4% to 22% while in the diffuse medium it increases from 0.6% to 4%. This enrichment process is due essentially to a turbulent diffusion mechanism associated to mass motions driven by supernova explosions. At z = 0, simulated blue (late type) galaxies show a correlation of the oxygen abundance present in the cold gas with the luminosity of the considered galaxy that agrees quite well with data derived from HII regions.

@misc{Durier2011, abstract = { The evolution of the baryon distribution in different phases, derived from cosmological simulations, are here reported. These computations indicate that presently most of baryons are in a warm-hot intergalactic (WHIM) medium (about 43%) while at z = 2.5 most of baryons constitute the diffuse medium (about 74%). Stars and the cold gas in galaxies represent only 14% of the baryons at z = 0. For z < 4 about a half of the metals are locked into stars while the fraction present in the WHIM and in the diffuse medium increases with a decreasing redshift. In the redshift range 0 < z < 2.5, the amount of metals in the WHIM increases from 4% to 22% while in the diffuse medium it increases from 0.6% to 4%. This enrichment process is due essentially to a turbulent diffusion mechanism associated to mass motions driven by supernova explosions. At z = 0, simulated blue (late type) galaxies show a correlation of the oxygen abundance present in the cold gas with the luminosity of the considered galaxy that agrees quite well with data derived from HII regions. }, added-at = {2011-11-10T18:12:16.000+0100}, author = {Durier, Fabrice and Pacheco, Jose Antonio de Freitas}, biburl = {https://www.bibsonomy.org/bibtex/2b0edb6a52f65935ca675278f46e53a87/miki}, description = {[1111.2059] The Evolution of the Baryon Distribution in the Universe from Cosmological Simulations}, interhash = {ef1b9c8b14be7141f37853aaec9d769b}, intrahash = {b0edb6a52f65935ca675278f46e53a87}, keywords = {baryon distribution evolution}, note = {cite arxiv:1111.2059 Comment: 12 pages, 6 figures, to be published in IJMPE}, timestamp = {2011-11-10T18:12:16.000+0100}, title = {The Evolution of the Baryon Distribution in the Universe from Cosmological Simulations}, url = {http://arxiv.org/abs/1111.2059}, year = 2011 }