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Article overview
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Continuous stellar mass-loss in N-body models of galaxies | Bruno Jungwiert
; Francoise Combes
; Jan Palous
; | Date: |
9 Jul 2001 | Subject: | astro-ph | Affiliation: | Astronomical Institute, Academy of Sciences, Prague, Czech Republic, Observatoire de Paris, France | Abstract: | We present an N-body computer code - aimed at studies of galactic dynamics - with a CPU-efficient algorithm for a continuous (i.e. time-dependent) stellar mass-loss. First, we summarize available data on stellar mass-loss and derive the long-term (20 Gyr) dependence of mass-loss rate of a coeval stellar population. We then implement it, through a simple parametric form, into a particle-mesh code with stellar and gaseous particles. We perform several tests of the algorithm reliability and show an illustrative application: a 2D simulation of a disk galaxy, starting as purely stellar but evolving as two-component due to gradual mass-loss from initial stars and due to star formation. In a subsequent paper we will use the code to study what changes are induced in galactic disks by the continuous gas recycling compared to the instantaneous recycling approximation, especially the changes in star formation rate and radial inflow of matter. | Source: | arXiv, astro-ph/0107160 | Services: | Forum | Review | PDF | Favorites |
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