Published October 1, 2001
| Published
Journal Article
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Discovery of a double ring in the core of η Carinae
Abstract
We report the discovery of a double ring structure in the waist of the nebula surrounding η Carinae. The rings are detected in the mid-IR dust continuum at wavelengths of 7.9, 11.9, 12.9 and 20 μm. The dust in the rings has a temperature of about 300 K. The orientation of the rings is inclined with respect to the axis of the homunculus by either 37 or 58 degrees. The central star is not in the projected centre of the structure defined by the two rings. This geometry is reminiscent of that seen in SN1987A and some planetary nebulae. We discuss several possible origins for this remarkable geometry and its orientation.
Additional Information
© 2001 ESO. Received: 14 May 2001. Accepted: 21 August 2000. We thank N. Ageorges for the excellent help with data-acquisition. VI thanks A. van Genderen for discussions. This work was supported by a NWO Pionier grant to LBFMW and a NWO Spinoza grant to E. P. J. van den Heuvel.Attached Files
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Additional details
- Eprint ID
- 85165
- Resolver ID
- CaltechAUTHORS:20180307-083229072
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- Created
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2018-03-07Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)