The Chemo-Dynamical Evolution of Elliptical Galaxies: Pre-heating and AGN heating

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dc.creatorKawata, Daisuke
dc.creatorGibson, Brad K.
dc.date2004-01-13
dc.date.accessioned2026-07-07T02:11:52Z
dc.date.available2026-07-07T02:11:52Z
dc.descriptionWe study the chemodynamical evolution of elliptical galaxies and their X-ray and optical properties using high-resolution cosmological simulations. Our Tree N-body/SPH code includes a self-consistent treatment of radiative cooling, star formation, supernovae feedback, and chemical enrichment. We present a series of LCDM cosmological simulations which trace the spatial and temporal evolution of abundances of heavy elements in both the stellar and gas components of galaxies. A giant elliptical galaxy formed in one of the simulations is quantitatively compared with the observational data in both the X-ray and optical regime. We implement a treatment of both pre-heating and AGN heating in this simulation, and examine the effect of these processes on elliptical galaxy formation. We find that the adopted pre-heating (T=10^7 K at z=4) is not strong enough to explain the observed X-ray or optical properties. On the other hand, our AGN heating model in which the gas inflow induces the AGN heating is consistent with both the X-ray and optical properties.
dc.description6 pages, 5 figures, to appear in the proceedings of "Modelling the Intergalactic and Intracluster Media", Vulcano Island, October 1-4, 2003, ed. V. Antonuccio-Delogu
dc.identifierhttps://arxiv.org/abs/astro-ph/0401232
dc.identifierhttp://arxiv.org/abs/astro-ph/0401232
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7253
dc.subjectAstrophysics
dc.titleThe Chemo-Dynamical Evolution of Elliptical Galaxies: Pre-heating and AGN heating
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