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- W2005060919 abstract "We have used a Fourier Transform Spectrometer (FTS) on the James Clerk Maxwell Telescope (JCMT) to study the submillimetre continuum emission from dust in three hot molecular cores (HMCs). The spectral index β of the dust emission for these sources has been determined solely within the 30-GHz wide 350-GHz (850 μm) passband to an accuracy comparable to those determined through multiwavelength observations. We find an average β≃ 1.6, in agreement with spectral indices determined from previous submillimetre observations of these sources and with those determined for HMC in general. The largest single source of uncertainty in these results is the variability of the atmosphere at 350 GHz, and with better sky subtraction techniques we show that the dust spectral index can clearly be determined within one passband to high accuracy with a submillimetre FTS. Using an imaging FTS on the Submillimetre Common User Bolometer Array (SCUBA)-2, the next generation wide-field submillimetre camera currently under development to replace SCUBA at the JCMT in 2006, we calculate that at 350 GHz it will be possible to determine β to ±0.1 for sources as faint as 400 mJy beam−1 and to ±0.3 for sources as faint as 140 mJy beam−1." @default.
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- W2005060919 date "2005-08-01" @default.
- W2005060919 modified "2023-10-18" @default.
- W2005060919 title "Fourier transform spectroscopy of the submillimetre continuum emission from hot molecular cores" @default.
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- W2005060919 doi "https://doi.org/10.1111/j.1365-2966.2005.09179.x" @default.
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