Recent X-ray Observations of Disk Galaxies: Tracing the Dynamic Interstellar Medium
| dc.creator | Wang, Q. Daniel | |
| dc.date | 2000-08-18 | |
| dc.date.accessioned | 2026-07-25T11:20:41Z | |
| dc.description | I review recent results from our deep ROSAT and Chandra observations of two galaxies, M101 and NGC 4631, in fields of exceptionally low Galactic extinction. Large amounts of X-ray-emitting gas are detected in these galaxies. Such gas is produced primarily in massive star forming regions and have an average characteristic temperature of a few times $10^6$ K. Cooler gas ($\sim 10^6$ K) is found typically outside galactic disks and may represent outflows from blown-out superbubbles. Propagation of star formation, driven by the expansion of hot gas, appears to be operating in giant HII complexes. A substantial fraction of photo-evaporated gas in such complexes may be mass-loaded into hot gas, which explains their large X-ray luminosities. These processes likely play an important role in determining the global properties of the interstellar medium, especially the disk/halo interaction. | |
| dc.description | 6 pages (including figures), an invited talk presented in the conference, Galaxy Disks and Disk Galaxies | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0008303 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0008303 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/1946 | |
| dc.subject | Astrophysics | |
| dc.title | Recent X-ray Observations of Disk Galaxies: Tracing the Dynamic Interstellar Medium | |
| dc.type | text |