Published December 18, 2007
| Version v1
Journal article
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Discovery of a Little Homunculus within the Homunculus Nebula of Carinae
Creators
- Ishibashi, Kazunori
- Gull, Theodore R.
- Davidson, Kris
- Smith, Nathan
- Lanz, Thierry
- Lindler, Don
- Feggans, Keith
- Verner, Ekaterina
- Woodgate, Bruce E.
- Kimble, Randy A.
- Bowers, Charles W.
- Kraemer, Steven
- Heap, Sarah R.
- Danks, Anthony C.
- Maran, Stephen P.
- Joseph, Charles L.
- Kaiser, Mary Elizabeth
- Linsky, Jeffrey L.
- Roesler, Fred
- Weistrop, and Donna
Description
We report long-slit spectroscopic mapping of the η Carinae nebula obtained using the Space Telescope Imaging Spectrograph. The observations reveal the presence of a previously unknown bipolar emission nebula (roughly ±2'' along its major axis) embedded within the well-known and larger Homunculus Nebula. A preliminary analysis suggests that this embedded nebula may have originated from a minor eruption event circa 1890, 50 years after the formation of the larger Homunculus.
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