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Dust emission and scattering in dense interstellar clouds
Juvela, M.
Dust has a crucial role in the physics of interstellar medium (ISM) and it is one of the main tracers used in studies of dense clouds. Its importance has been accentuated by the large amounts of data available from the recent fleet of infrared and submillimetre satellites. These observations are providing further insights into the properties of in…
Constraints on Jupiter's stratospheric HCl abundance and chlorine cycle from Herschel/HIFI
Fletcher, L. N.; Irwin, P. G. J.; Teanby, N. A. +1 more
Detection of HCl on Jupiter would provide insight into the chlorine cycle and external elemental fluxes on giant planets, yet so far has not been possible. Here we present the most sensitive search for Jupiter's stratospheric HCl to date using observations of the 625.907 and 1876.221 GHz spectral lines with Herschel's HIFI instrument. HCl was not …
Constraints on Titan's middle atmosphere ammonia abundance from Herschel/SPIRE sub-millimetre spectra
Hartogh, P.; Lellouch, E.; Irwin, P. G. J. +6 more
Sub-millimetre spectra measured with Herschel's SPIRE Fourier Transform Spectrometer were used to search for ammonia (NH3) in Titan's stratosphere. Observations were taken during 2010 and 2011, just after Titan's northern spring equinox, which occurred in mid-2009. In our analysis we used high spectral resolution data (0.074 cm-1
Thermal and shape properties of asteroid (21) Lutetia from Herschel observations around the Rosetta flyby
Altieri, B.; Valtchanov, I.; Jorda, L. +22 more
Prior to and around the Rosetta flyby of (21) Lutetia, the Herschel Space Observatory performed a collaborative observation campaign with its two photometers observing the asteroid in the far infrared, at wavelengths not covered by Rosetta's instruments. The Herschel observations, fed into a thermophysical model (TPM) using as input a shape model …