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Ngc 4438: ram pressure sweeping of a tidally disrupted galaxy
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hibbard, J. E. Vangorkom, Jacqueline H. |
| Copyright Year | 1990 |
| Description | NGC 4438 is the highly HI deficient peculiar spiral in the center of the Virgo cluster. Observations are given of the neutral hydrogen emission obtained with the Very Large Array (VLA) in the D-array configuration. These observations map out the total HI as determined from single dish measurements, and show the hydrogen to be confined to a region about one third the size of the optical disk and displaced to the side of the galaxy opposite M87. The hydrogen content of the galaxy is over an order of magnitude less than that expected for a galaxy of its type. The data suggest that the HI deficiency is a result of ram pressure stripping of the gas in the outer regions of the galaxy by the hot intracluster medium after being tidally perturbed. |
| File Size | 292334 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910004863 |
| Archival Resource Key | ark:/13960/t0dv6fh4f |
| Language | English |
| Publisher Date | 1990-07-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Galactic Clusters Neutral Gases Confinement Virgo Galactic Cluster Elliptical Galaxies Galaxies Hydrogen Very Large Array Vla Intergalactic Media Microwave Emission Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
