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High velocity clouds in nearby disk galaxies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Roberts, Morton S. Schulman, Eric Brinks Sr., Elias Bregman, Joel N. |
| Copyright Year | 1993 |
| Description | Clouds of neutral hydrogen in our galaxy with the absolute value of v greater than 100 km/s cover approximately 10 percent of the sky to a limiting column density of 1 x 10(exp 18) cm(exp -2). These high velocity clouds (HVCs) may dominate the kinetic energy of neutral hydrogen in non-circular motion, and are an important though poorly understood component of galactic gas. It has been suggested that the HVCs can be reproduced by a combination of three phenomena: a galactic fountain driven by disk supernovae which would account for most of the HVCs, material tidally torn from the Magellanic Clouds, and an outer arm complex which is associated with the large scale structure of the warped galactic disk. We sought to detect HVCs in external galaxies in order to test the galactic fountain model. |
| File Size | 134309 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930017615 |
| Archival Resource Key | ark:/13960/t0vq7vg7f |
| Language | English |
| Publisher Date | 1993-01-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Neutral Gases Magellanic Clouds Galaxies Supernovae Hydrogen Cosmic Gases Astronomical Models Disk Galaxies Kinetic Energy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
