Search Publications
Planck intermediate results. XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +195 more
Within ten nearby (d < 450 pc) Gould belt molecular clouds we evaluate statistically the relative orientation between the magnetic field projected on the plane of sky, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz, and the gas column density structures, quantified by the gradient of the column densi…
The XMM-Newton serendipitous survey. VII. The third XMM-Newton serendipitous source catalogue
Esquej, P.; Motch, C.; Ballet, J. +37 more
Context. Thanks to the large collecting area (3 ×~1500 cm2 at 1.5 keV) and wide field of view (30' across in full field mode) of the X-ray cameras on board the European Space Agency X-ray observatory XMM-Newton, each individual pointing can result in the detection of up to several hundred X-ray sources, most of which are newly discovere…
Optimal binning of X-ray spectra and response matrix design
Kaastra, J. S.; Bleeker, J. A. M.
Aims: A theoretical framework is developed to estimate the optimal binning of X-ray spectra.
Methods: We derived expressions for the optimal bin size for model spectra as well as for observed data using different levels of sophistication.
Results: It is shown that by taking into account both the number of photons in a given spectral…
Consistent dust and gas models for protoplanetary disks. I. Disk shape, dust settling, opacities, and PAHs
Waters, L. B. F. M.; Pinte, C.; Ménard, F. +19 more
We propose a set of standard assumptions for the modelling of Class II and III protoplanetary disks, which includes detailed continuum radiative transfer, thermo-chemical modelling of gas and ice, and line radiative transfer from optical to cm wavelengths. The first paper of this series focuses on the assumptions about the shape of the disk, the d…
Extended Lyman α haloes around individual high-redshift galaxies revealed by MUSE
Steinmetz, M.; Carollo, C. M.; Verhamme, A. +22 more
We report the detection of extended Lyα emission around individual star-forming galaxies at redshifts z = 3-6 in an ultradeep exposure of the Hubble Deep Field South obtained with MUSE on the ESO-VLT. The data reach a limiting surface brightness (1σ) of ~1 × 10-19 erg s-1 cm-2 arcsec-2 in azimuthally ave…
Planck intermediate results. XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +157 more
Using the Planck 2015 data release (PR2) temperature maps, we separate Galactic thermal dust emission from cosmic infrared background (CIB) anisotropies. For this purpose, we implement a specifically tailored component-separation method, the so-called generalized needlet internal linear combination (GNILC) method, which uses spatial information (t…
Planck 2015 results. VIII. High Frequency Instrument data processing: Calibration and maps
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +223 more
This paper describes the processing applied to the cleaned, time-ordered information obtained from the Planck High Frequency Instrument (HFI) with the aim of producing photometrically calibrated maps in temperature and (for the first time) in polarization. The data from the entire 2.5-year HFI mission include almost five full-sky surveys. HFI obse…
Planck 2015 results. IX. Diffuse component separation: CMB maps
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +237 more
We present foreground-reduced cosmic microwave background (CMB) maps derived from the full Planck data set in both temperature and polarization. Compared to the corresponding Planck 2013 temperature sky maps, the total data volume is larger by a factor of 3.2 for frequencies between 30 and 70 GHz, and by 1.9 for frequencies between 100 and 857 GHz…
Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues. First data release for the inner Milky Way: +68° ≥ l ≥ -70°
Bernard, J. -P.; Martin, P. G.; Natoli, P. +61 more
Aims: We present the first public release of high-quality data products (DR1) from Hi-GAL, the Herschel infrared Galactic Plane Survey. Hi-GAL is the keystone of a suite of continuum Galactic plane surveys from the near-IR to the radio and covers five wavebands at 70, 160, 250, 350 and 500 µm, encompassing the peak of the spectral energ…
The XXL Survey. I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
Smith, G. P.; Chiappetti, L.; Altieri, B. +89 more
Context. The quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic spectrum. Over the past two decades, the Chandra and XMM-Newton observatories have supported numerous studies of X-ray-selected clusters of galaxies, acti…