Dust-to-Gas Ratio and Phase Transition of Interstellar Medium
| dc.creator | Hirashita, H. | |
| dc.date | 1999-03-17 | |
| dc.date.accessioned | 2026-07-07T02:30:53Z | |
| dc.date.available | 2026-07-07T02:30:53Z | |
| dc.description | We discuss the time evolution of dust-to-gas mass ratio in the context of multi-phase model of interstellar medium. Phase transition of interstellar gas is considered to occur on a timescale of $10^{7--8}$ yr, according to a nonlinear open system model of interstellar medium. Since the phase transition changes the dust formation and destruction rates, the dust-to-gas ratio also fluctuates on the same timescale. This explains the scatter of the dust-to-gas ratios of spiral galaxies quantitatively, though we should note the large observational uncertainty. | |
| dc.description | 3 pages LaTeX, no figures, to appear in A&A Letter | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9903259 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9903259 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13970 | |
| dc.subject | Astrophysics | |
| dc.title | Dust-to-Gas Ratio and Phase Transition of Interstellar Medium | |
| dc.type | text |