Search Publications
The MCXC: a meta-catalogue of x-ray detected clusters of galaxies
Arnaud, M.; Pointecouteau, E.; Pratt, G. W. +2 more
We present the compilation and properties of a meta-catalogue of X-ray detected clusters of galaxies, the MCXC. This very large catalogue is based on publicly available ROSAT All Sky Survey-based (NORAS, REFLEX, BCS, SGP, NEP, MACS, and CIZA) and serendipitous (160SD, 400SD, SHARC, WARPS, and EMSS) cluster catalogues. Data have been systematically…
Planck early results. I. The Planck mission
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +272 more
The European Space Agency's Planck satellite was launched on 14 May 2009, and has been surveying the sky stably and continuously since 13 August 2009. Its performance is well in line with expectations, and it will continue to gather scientific data until the end of its cryogenic lifetime. We give an overview of the history of Planck in its first y…
Planck early results. VIII. The all-sky early Sunyaev-Zeldovich cluster sample
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +235 more
We present the first all-sky sample of galaxy clusters detected blindly by the Planck satellite through the Sunyaev-Zeldovich (SZ) effect from its six highest frequencies. This early SZ (ESZ) sample is comprised of 189 candidates, which have a high signal-to-noise ratio ranging from 6 to 29. Its high reliability (purity above 95%) is further ensur…
Planck early results. XIX. All-sky temperature and dust optical depth from Planck and IRAS. Constraints on the "dark gas" in our Galaxy
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +205 more
An all sky map of the apparent temperature and optical depth of thermal dust emission is constructed using the Planck-HFI (350µm to 2 mm) andIRAS(100µm) data. The optical depth maps are correlated with tracers of the atomic (Hi) and molecular gas traced by CO. The correlation with the column density of observed gas is linear in the low…
Planck early results. VII. The Early Release Compact Source Catalogue
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +228 more
A brief description of the methodology of construction, contents and usage of the Planck Early Release Compact Source Catalogue (ERCSC), including the Early Cold Cores (ECC) and the Early Sunyaev-Zeldovich (ESZ) cluster catalogue is provided. The catalogue is based on data that consist of mapping the entire sky once and 60% of the sky a second tim…
Planck early results. XVIII. The power spectrum of cosmic infrared background anisotropies
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +202 more
Using Planck maps of six regions of low Galactic dust emission with a total area of about 140 deg2, we determine the angular power spectra of cosmic infrared background (CIB) anisotropies from multipole ℓ = 200 to ℓ = 2000 at 217, 353, 545 and 857 GHz. We use 21-cm observations of Hi as a tracer of thermal dust emission to reduce the al…
Planck early results. XXV. Thermal dust in nearby molecular clouds
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +197 more
Planck allows unbiased mapping of Galactic sub-millimetre and millimetre emission from the most diffuse regions to the densest parts of molecular clouds. We present an early analysis of the Taurus molecular complex, on line-of-sight-averaged data and without component separation. The emission spectrum measured by Planck and IRAS can be fitted pixe…
Planck early results. XI. Calibration of the local galaxy cluster Sunyaev-Zeldovich scaling relations
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +207 more
We present precise Sunyaev-Zeldovich (SZ) effect measurements in the direction of 62 nearby galaxy clusters (z < 0.5) detected at high signal-to-noise in the first Planck all-sky data set. The sample spans approximately a decade in total mass, 2 × 1014 M⊙ < M500 < 2 × 1015 M⊙, where M…
Planck early results. XXIV. Dust in the diffuse interstellar medium and the Galactic halo
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +205 more
This paper presents the first results from a comparison of Planck dust maps at 353, 545 and 857GHz, along with IRAS data at 3000 (100 µm) and 5000GHz (60 µm), with Green Bank Telescope 21-cm observations of Hi in 14 fields covering more than 800 deg2 at high Galactic latitude. The main goal of this study is to estimate the f…
Planck early results. XX. New light on anomalous microwave emission from spinning dust grains
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +213 more
Anomalous microwave emission (AME) has been observed by numerous experiments in the frequency range ~10-60 GHz. Using Planck maps and multi-frequency ancillary data, we have constructed spectra for two known AME regions: the Perseus and ρ Ophiuchi molecular clouds. The spectra are well fitted by a combination of free-free radiation, cosmic microwa…