| タイトル | Is the Ejecta of ETA Carinae Overabundant or Overexcited |
| 著者（英） | Davidson, Kris; Viera, Gladys; Ishibashi, Kaxunori; Damineli, Augusto; Corcoran, Michael; Johansson, Sveneric; Hartman, Henrick; Nielsen, Krister; Gull, Theodore |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2003-01-01 |
| 言語 | eng |
| 内容記述 | The ejecta of Eta Carinae, revealed by HST/STIS, are in a large range of physical conditions. As Eta Carinae undergoes a 5.52 period, changes occur in nebular emission and nebular absorption. "Warm" neutral regions, partially ionized regions, and fully ionized regions undergo significant changes. Over 2000 emission lines, most of Fe-like elements, have been indentified in the Weigelt blobs B and D. Over 500 emission lines have been indentified in the Strontium Filament. An ionized Little Homunculus is nestled within the neutral-shelled Homunculus. In line of sight, over 500 nebular absorption lines have been identified with up to twenty velocity components. STIS is following changes in many nebular emission and absorption lines as Eta Carinae approaches the minimum, predicted to be in June/July 2003, during the General Assembly. Coordinated observations with HST, CHANDRA, RXTE, FUSE, UVES/VLT, Gemini and other observatories are following this minimum. |
| NASA分類 | Astrophysics |
| 権利 | No Copyright |
|
