Search Publications
Planck 2013 results. XXIV. Constraints on primordial non-Gaussianity
Miville-Deschênes, M. -A.; Bernard, J. -P.; Planck Collaboration +237 more
The Planck nominal mission cosmic microwave background (CMB) maps yield unprecedented constraints on primordial non-Gaussianity (NG). Using three optimal bispectrum estimators, separable template-fitting (KSW), binned, and modal, we obtain consistent values for the primordial local, equilateral, and orthogonal bispectrum amplitudes, quoting as our…
Planck 2013 results. XI. All-sky model of thermal dust emission
Miville-Deschênes, M. -A.; Boulanger, F.; Abergel, A. +244 more
This paper presents an all-sky model of dust emission from the Planck 353, 545, and 857 GHz, and IRAS 100 µm data. Using a modified blackbody fit to the data we present all-sky maps of the dust optical depth, temperature, and spectral index over the 353-3000 GHz range. This model is a good representation of the IRAS and Planck data at 5' bet…
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts
Böhringer, H.; Kneissl, R.; Dahle, H. +252 more
We present constraints on cosmological parameters using number counts as a function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ (PSZ) catalogue. The PSZ is selected through the signature of the Sunyaev-Zeldovich (SZ) effect, and the sub-sample used here has a signal-to-noise threshold of seven, with each object confirmed…
Planck 2013 results. XV. CMB power spectra and likelihood
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +259 more
This paper presents the Planck 2013 likelihood, a complete statistical description of the two-point correlation function of the CMB temperature fluctuations that accounts for all known relevant uncertainties, both instrumental and astrophysical in nature. We use this likelihood to derive our best estimate of the CMB angular power spectrum from Pla…
Planck 2013 results. XXIII. Isotropy and statistics of the CMB
Kim, J.; Miville-Deschênes, M. -A.; Bernard, J. -P. +252 more
The two fundamental assumptions of the standard cosmological model - that the initial fluctuations are statistically isotropic and Gaussian - are rigorously tested using maps of the cosmic microwave background (CMB) anisotropy from the Planck satellite. The detailed results are based on studies of four independent estimates of the CMB that are com…
Planck 2013 results. XXIX. The Planck catalogue of Sunyaev-Zeldovich sources
Böhringer, H.; Kneissl, R.; Dahle, H. +273 more
We describe the all-sky Planck catalogue of clusters and cluster candidates derived from Sunyaev-Zeldovich (SZ) effect detections using the first 15.5 months of Planck satellite observations. The catalogue contains 1227 entries, making it over six times the size of the Planck Early SZ (ESZ) sample and the largest SZ-selected catalogue to date. It …
Planck 2013 results. XVII. Gravitational lensing by large-scale structure
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +238 more
On the arcminute angular scales probed by Planck, the cosmic microwave background (CMB) anisotropies are gently perturbed by gravitational lensing. Here we present a detailed study of this effect, detecting lensing independently in the 100, 143, and 217 GHz frequency bands with an overall significance of greater than 25σ. We use thetemperature-gra…
Molecular line emission in NGC 1068 imaged with ALMA. I. An AGN-driven outflow in the dense molecular gas
Tacconi, L. J.; Hunt, L. K.; Colina, L. +23 more
Aims: We investigate the fueling and the feedback of star formation and nuclear activity in
Methods: We have used the A…
The frequency of planetary debris around young white dwarfs
Gänsicke, B. T.; Koester, D.; Farihi, J.
Context. Heavy metals in the atmospheres of white dwarfs are thought in many cases to be accreted from a circumstellar debris disk, which was formed by the tidal disruption of a rocky planetary body within the Roche radius of the star. The abundance analysis of photospheric elements and conclusions about the chemical composition of the accreted ma…
The applicability of far-infrared fine-structure lines as star formation rate tracers over wide ranges of metallicities and galaxy types
Lebouteiller, Vianney; De Looze, Ilse; Baes, Maarten +19 more
Aims: We analyze the applicability of far-infrared fine-structure lines [Cii] 158 µm, [Oi] 63 µm, and [Oiii] 88 µm to reliably trace the star formation rate (SFR) in a sample of low-metallicity dwarf galaxies from the Herschel Dwarf Galaxy Survey and, furthermore, extend the analysis to a broad sample of galaxies of various …