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Planck early results. X. Statistical analysis of Sunyaev-Zeldovich scaling relations for X-ray galaxy clusters
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +197 more
All-sky data from the Planck survey and the Meta-Catalogue of X-ray detected Clusters of galaxies (MCXC) are combined to investigate the relationship between the thermal Sunyaev-Zeldovich (SZ) signal and X-ray luminosity. The sample comprises ~1600 X-ray clusters with redshifts up to ~1 and spans a wide range in X-ray luminosity. The SZ signal is …
Multiwavelength campaign on Mrk 509. IV. Optical-UV-X-ray variability and the nature of the soft X-ray excess
Kaastra, J. S.; Kriss, G. A.; Cappi, M. +8 more
We present the analysis of XMM-Newtonand Swiftoptical-UV and X-ray observations of the Seyfert-1/QSO
C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey
Veilleux, S.; Sanders, D. B.; Surace, J. A. +11 more
We present X-ray data for a complete sample of 44 luminous infrared galaxies (LIRGs), obtained with the Chandra X-ray Observatory. These are the X-ray observations of the high luminosity portion of the Great Observatory All-sky LIRG Survey (GOALS), which includes the most luminous infrared selected galaxies, log (Lir/L⊙) ≥ 11…
Characterizing precursors to stellar clusters with Herschel
Bernard, J. -P.; Testi, L.; Peretto, N. +9 more
Context. Despite their profound effect on the universe, the formation of massive stars and stellar clusters remains elusive. Recent advances in observing facilities and computing power have brought us closer to understanding this formation process. In the past decade, compelling evidence has emerged that suggests infrared dark clouds (IRDCs) may b…
Planck early results. IV. First assessment of the High Frequency Instrument in-flight performance
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +163 more
The Planck High Frequency Instrument (HFI) is designed to measure the temperature and polarization anisotropies of the cosmic microwave background and Galactic foregrounds in six ~30% bands centered at 100, 143, 217, 353, 545, and 857 GHz at an angular resolution of 10' (100 GHz), 7' (143 GHz), and 5' (217 GHz and higher). HFI has been operating f…
Planck early results. IX. XMM-Newton follow-up for validation of Planck cluster candidates
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +201 more
We present the XMM-Newton follow-up for confirmation of Planck cluster candidates. Twenty-five candidates have been observed to date using snapshot (~10ks) exposures, ten as part of a pilot programme to sample a low range of signal-to-noise ratios (4 < S/N < 6), and a further 15 in a programme to observe a sample of S/N > 5 candidates. Th…
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…