Submillimetre emission from η Carinae
نویسندگان
چکیده
We present critical, long-wavelength observations of η Carinae in the submillimetre using SCUBA on the JCMT at 850 and 450 μm 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 (SED) and estimate between 0.3− 0.7 M⊙ 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 η Carinae’s circumstellar nebula contains > 10 M⊙ of gas, although this may have been ejected on a longer timescale than previously thought.
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