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Submillimetre Emission from Eta Carinae

H. L. Gomez·L. Dunne·S. A. Eales·M. G. Edmunds
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Abstract

We present critical, long-wavelength observations of Eta Carinae in the submillimetre using SCUBA on the JCMT at 850 and 450 um to confirm the presence of a large mass of warm dust around the central star. We fit a two-component blackbody to the IR-submm spectral energy distribution and estimate between 0.3-0.7 solar masses of dust exists in the nebula depending on the dust absorption properties and the extent of contamination from free-free emission at the SCUBA wavelengths. These results provide further evidence that Eta Carinae's circumstellar nebula contains > 10 solar masses of gas, although this may have been ejected on a longer timescale than previously thought.

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H. L. Gomez, L. Dunne, S. A. Eales, M. G. Edmunds. 2006-09-01. Submillimetre Emission from Eta Carinae. https://doi.org/10.1111/j.1365-2966.2006.10921.x

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