Publication
Discovery of Neutral Hydrogen Associated with the Shells of Elliptical Galaxies
Schiminovich, D., van Gorkom, J. & van der Hulst, J. M., 1-Dec-1993, In : Bulletin of the American Astronomical Society. 25, p. 1354Research output: Contribution to journal › Article › Academic › peer-review
We present VLA images and kinematics of neutral hydrogen associated with
the shells of two elliptical galaxies, NGC 5128 (Centaurus A) and NGC
2865. We note in particular several striking features which the two
galaxies have in common. In both galaxies, the HI distribution follows
the curvature of the outermost `diffuse' shells, and is slightly offset,
shifted to the outside of the shells. Furthermore, the HI shows a smooth
gradient in velocity over ~ 400 km/s with a sense of rotation similar to
that of the main body of the optical galaxy. The similar properties of
the gas near the shells challenge existing theories of shell formation.
| Original language | English |
|---|---|
| Pages (from-to) | 1354 |
| Journal | Bulletin of the American Astronomical Society |
| Volume | 25 |
| Publication status | Published - 1-Dec-1993 |
ID: 25236377