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Planck early results. XVII. Origin of the submillimetre excess dust emission in the Magellanic Clouds
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +198 more
The integrated spectral energy distributions (SED) of the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) appear significantly flatter than expected from dust models based on their far-infrared and radio emission. The still unexplained origin of this millimetre excess is investigated here using the Planck data. The integrated SED of …
Modeling the evolution of infrared galaxies: a parametric backward evolution model
Dole, H.; Lagache, G.; Béthermin, M. +2 more
Aims: We attempt to model the infrared galaxy evolution in as simple a way as possible and reproduce statistical properties such as the number counts between 15 µm and 1.1 mm, the luminosity functions, and the redshift distributions. We then use the fitted model to interpret observations from Spitzer, AKARI, BLAST, LABOCA, AzTEC, SPT, a…
Mapping the radial structure of AGN tori
Hönig, S. F.; Kishimoto, M.; Tristram, K. R. W. +3 more
We present mid-IR interferometric observations of six type 1 AGNs at multiple baseline lengths ranging from 27 m to 130 m, reaching high angular resolutions up to λ/B ~ 0.02 arcsec. For two of the targets, we have simultaneous near-IR interferometric measurements as well, taken within a week. We find that all the objects are partially resolved at …
The XMM Deep survey in the CDF-S. I. First results on heavily obscured AGN
Silverman, J. D.; Bauer, F. E.; Brandt, W. N. +25 more
We present the first results of the spectroscopy of distant, obscured AGN as obtained with the ultra-deep (≈3.3 Ms) XMM-Newton survey in the Chandra deep field South. One of the primary goals of the project is to characterize the X-ray spectral properties of obscured and heavily obscured Compton-thick AGN over the range of redhifts and luminositie…
Weeds: a CLASS extension for the analysis of millimeter and sub-millimeter spectral surveys
Maret, S.; Pety, J.; Hily-Blant, P. +2 more
The advent of large instantaneous bandwidth receivers and high spectral resolution spectrometers on (sub-)millimeter telescopes has opened up the possibilities for unbiased spectral surveys. Because of the large amount of data they contain, any analysis of these surveys requires dedicated software tools. Here we present an extension of the widely …
Planck early results. XXI. Properties of the interstellar medium in the Galactic plane
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +199 more
Planck has observed the entire sky from 30 GHz to 857GHz. The observed foreground emission contains contributions from different phases of the interstellar medium (ISM). We have separated the observed Galactic emission into the different gaseous components (atomic, molecular and ionised) in each of a number of Galactocentric rings. This technique …
Planck early results. VI. The High Frequency Instrument data processing
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +163 more
We describe the processing of the 336 billion raw data samples from the High Frequency Instrument (HFI) which we performed to produce six temperature maps from the first 295 days of Planck-HFI survey data. These maps provide an accurate rendition of the sky emission at 100, 143, 217, 353, 545 and 857 GHz with an angular resolution ranging from 9.9…
SDO AIA and Hinode EIS observations of "warm" loops
Mason, H. E.; Del Zanna, G.; O'Dwyer, B.
We present simultaneous observations of active region "warm" (1 MK) loops using the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA) and Hinode EUV Imaging Spectrometer (EIS). Sample EIS spectra for a loop footpoint and a lop leg region are presented, and are used to describe the spectral lines which contribute to the six AIA EU…
MESS (Mass-loss of Evolved StarS), a Herschel key program
Ivison, R. J.; Blommaert, J. A. D. L.; Olofsson, G. +39 more
MESS (Mass-loss of Evolved StarS) is a guaranteed time key program that uses the PACS and SPIRE instruments on board the Herschel space observatory to observe a representative sample of evolved stars, that include asymptotic giant branch (AGB) and post-AGB stars, planetary nebulae and red supergiants, as well as luminous blue variables, Wolf-Rayet…
Planck early results. III. First assessment of the Low Frequency Instrument in-flight performance
Baccigalupi, C.; Banday, A. J.; Barreiro, R. B. +158 more
The scientific performance of the Planck Low Frequency Instrument (LFI) after one year of in-orbit operation is presented. We describe the main optical parameters and discuss photometric calibration, white noise sensitivity, and noise properties. A preliminary evaluation of the impact of the main systematic effects is presented. For each of the pe…